Explore leading software testing companies that launch high-performing products, detect bugs early, improve stability, and ensure every feature works correctly across devices and environments. For teams focused on the US market, we also highlight trusted partners with region-specific expertise, including top US-based software testing companies.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

Kevych Solutions
VerifiedVerified by the DesignRush team for authenticity and credibility.Expert-Vetted - TOP 1% in Mobile App Development
Kevych Solutions isn`t just a software development team - we`re your partners in creating innovative, high-quality digital solutions that truly make an impact...
Top Services:
- Mobile App Development
- Design Services
- Software Development
- Web Development
- Staff Augmentation
- Show more
- Location
- Lviv, Ukraine
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 33 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsKevych Solutions Services
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Kevych Solutions Reviews & Testimonials

Mobile App Development Review from Vasco Rouw
Weve been working with Kevych Solutions full-time for over a year, and the experience has been excellent. They handle the complete end-to-end development of our AI-powered mobile apps, including UI/UX, frontend and backend development, AI integrations, infrastructure, deployment, and ongoing support.What stands out most is the extremely high level of their technical expertise and execution quality. They actively use AI and modern development workflows to maximize efficiency and deliver results quickly. The team is highly responsive, proactive, and always goes the extra mile to meet deadlines.Since working together, we scaled from 0 to over 100,000 subscribers in just 8 months, and our apps are now generating more than $1M in monthly revenue. Whenever challenges came up, we solved them together efficiently, and Kevych Solutions continuously adapted and grew alongside our projects.We highly recommend them to anyone looking for a reliable, high-level mobile app development partner.

Mobile App Development Review from Alex Kayaian
Kevych was amazing to work with, and an integral part of our team. They delivered on time, with high quality, and consistent communication. You can't ask for a better partner when developing a project.

Mobile App Development Review from Lucas Chatham
I had an excellent experience working with this engineering firm to build a React Native app. Oleg and Ihor were exceptional software engineerstheir technical skills were top-notch, and they consistently delivered clean, well-structured code on time.What really set this team apart was Volodymyr, their CTO. He was incredibly hands-on, maintaining clear and frequent communication throughout the project. He was always responsive and proactive in managing the work, which made the entire process smooth and stress-free.The team was professional, reliable, and genuinely committed to quality. They understood my requirements and provided valuable input that improved the final product. Highly recommend this firm for anyone seeking skilled developers and excellent project management!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBuild a More Technology-Driven Business With Our Developers.
Goosebelt is a premier software company specializing in custom software development and software outsourcing solutions. Our dedicated team of experts harnesses cutting-edge technology and innovative strategies to deliver tailor-made software solutions that drive business growth and efficiency...
Top Services:
- Software Testing
- Mobile App Development
- Software Development
- UI/UX Design
- Show more
- Location
- Orlando, Florida
- Number of Employees
- Under 49
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsGoosebelt Services
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Goosebelt Reviews & Testimonials

Cybersecurity Review from Jonathan Stahura
Goosebelt is exceptional in project management. They consistently adhere to schedules and demonstrate a commendable approach to budgeting. Our communication, primarily through email, has been smooth and efficient. Moreover, since partnering with them, we've experienced zero security breaches, which speaks to their expertise. I am thoroughly impressed with their attention to detail and clear, effective communication style.

Mobile App Development Review from Yann Caron
Our website became significantly more stable, with a remarkable increase in speed, thanks to their expertise. They successfully managed a large-scale migration by leveraging AWS ECS to seamlessly coordinate and automate our server and application infrastructure. The results exceeded our expectations, leaving us very proud of the outcome.

Software Testing Review from Anders Rong
We enlisted Goosebelt to test our social networking app, Dalux, for performance issues and bugs, and they delivered exceptional results. Their team carried out comprehensive testing, identifying and fixing potential bottlenecks that could have impacted the apps performance. Thanks to Goosebelt, our app now runs flawlessly, offering a smooth user experience.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWeb & mobile development for startups and SMEs
We are a web studio from Kyiv, Ukraine. At Stubbs, we consider design to be the soul of every digital creation. We care and focus on understanding our client's positioning and preferences to craft visually captivating and user-centric designs...
Top Services:
- Web Development
- eCommerce Development
- Mobile App Development
- Software Testing
- Web Design
- Show more
- Location
- Kyiv, Ukraine
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 14 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsStubbs Pro Services
Data sourced from the agency's DesignRush profileLexus dealer Oleksandr Usyk Finance.ua Riviera House Mentoly Anabolic Pharmacists Avocadostories Mebelmarket Codelex Wicked Tennis
Stubbs Pro Reviews & Testimonials

Web Development Review from Anastasiia Cherednichenko
We worked with Stubbs on a project for a shared client. Our team was responsible for the web application layer, and they handled the blockchain backend. The integration points were clear and well-structured, which made our side of the work manageable. Communication was straightforward throughout, and we didn't run into any major blockers. There was a short alignment phase at the beginning where we had to figure out how the two parts would connect, but once that was sorted things moved without issues. Overall a solid team to work with on a technically split project like this.
Анастасия Стелюта's Review Sourced from Google
Excellent experience of cooperation with the web studio Stubbs. A competent team with unconventional thinking, deep technical background and well-established communication. The result of the work more than justifies the cost of their services. I recommend them as professionals.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsStrategic Software, Startup Speed
Mile Marker is an agile development agency offering startups strategically designed custom software focused on solving your business problems. Mile Markers team includes product managers, developers, designers, QA, DevOps and more...
Top Services:
- Software Development
- Mobile App Development
- Software Testing
- UI/UX Design
- Staff Augmentation
- Show more
- Location
- Madison, Wisconsin
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsMile Marker Services
Data sourced from the agency's DesignRush profileToughClicks Dayta Rebate Bus
Mile Marker Reviews & Testimonials

Software Development Review from Clay Burdelik
Mile Marker was fantastic to work with. They made a rock solid plan and executed in an agile manner ensuring our product was built to the requirements of our customers. Mile Marker's transparency and communication ensured we knew how the project was progressing and had opportunities to provide our input to help shape our product. Having the lived experience of being founders, Mile Marker's team guided us through decision making proessess and helped to find the right balance between feature sets, security, scalability, cost, and time. Mile Marker joined customer calls to provide a technical expertise to our sales process and helped ensure our platform's security was viewed positively by Fortune 500 IT teams. Mile Marker's highly skilled team helped expedite our business and was a key factor to our early success.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsFull cycle blockchain development
Crypton Studio stands out as the foremost leader in custom blockchain development across Europe. With over seven years of experience in the global market, we've successfully completed over 100 diverse projects for clients spanning 25 countries...
Top Services:
- Blockchain
- Web Development
- Software Development
- IT Services
- Web Design
- Show more
- Location
- Riga, Latvia
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 17 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCrypton & Studio Services
Data sourced from the agency's DesignRush profileMotoGP Decentraland Polylastic
Giving Shape to Your Dreams
CodeAegis is a leading software development company committed to delivering excellence in every project. With a global presence in UAE, USA, Kuwait, and India and eight years of experience, we have been providing innovative digital solutions that reflect our dedication to quality...
Top Services:
- Mobile App Development
- Software Development
- Blockchain
- IoT
- AI Development
- Show more
- Location
- Noida, India
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 18 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCodeAegis Private Limited Services
Data sourced from the agency's DesignRush profileHP ProTrain Ford HEWE AutoScrapMarket Global Limos Happy Marts Diaspora Nigeria amChain Great Learning
Hygge Software - your strategic partner on your business's digital journey.
We are Hygge Software a strategic tech consulting and development company helping businesses solve real challenges and achieve measurable results. We combine deep technical expertise with a business-first mindset to align technology with your goals...
Top Services:
- AI Development
- Mobile App Development
- Software Development
- Software Testing
- IT Services
- Show more
- Location
- Warsaw, Poland
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsHygge Software Services
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Hygge Software Reviews & Testimonials
Daria Mateichenko's Review Sourced from Google
We partnered with HS on few projects. Started with small test work to see how things would go on a small scale. During this test we were able to talk with mgmt team (both PM and Top mgmt), CTO and few tech team members and we liked what we heard. Team was really focused on suggesting to us different options and describing pros and cons of each. So we proceeded to a bigger project planning. It's mid the journey and so far we are happy with the approach and quality, especially when some tension comes up with bugs or anything - we're able to figure out the win win, and we receive reasonable outline of why this or that happened.
El porqué de las cosas's Review Sourced from Google
One of the worst software companies we’ve ever worked with.If you're considering working with them, read this first:They never delivered the product they committed to — after getting paid, they vanished, leaving us with nothing.Their business model seems to be: drag out projects endlessly, then charge extra to fix their own technical mess.Endless bugs — every fix introduced more problems. It was a never-ending cycle.The product never worked at any point, not even partially.They talk a lot about “best practices”, “scalability”, and “clean architecture”, but:Their code, reviewed by external experts, was a disaster.Functions with over 500 lines, no automated tests, no proper error handling, and no security.Critical security flaws:Users could access and modify other users’ resources — a massive breach of trust and privacy.Ultimately, it was a complete waste of time, money, and energy.When challenged, they were arrogant and even mocked us instead of taking accountability.🔴 Avoid them at all costs. If you value your time, your budget, and your sanity — don’t even call them.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsIdeate, Huddle, Solve
Code Huddle is an Islamabad-based software company, founded in 2021, that builds AI products, SaaS platforms, web and mobile apps for startups and growing businesses. We also provide QA testing, cloud infrastructure and dedicated engineering teams...
Top Services:
- Software Development
- Mobile App Development
- AI Development
- Web Development
- Web Design
- Show more
- Location
- Islamabad, Pakistan
- Number of Employees
- Under 49
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 6 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCode Huddle Services
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Code Huddle Reviews & Testimonials
Daniel vaziri's Review Sourced from Google
We have worked with Code Huddle on several software development projects over the years, and they have become a trusted development partner for us.What I value most is their flexibility, responsiveness, and willingness to take ownership when challenges arise. Software projects rarely go exactly as planned, and having a team that communicates openly, adapts quickly, and works with you to solve problems makes a huge difference.They take the time to understand what we are trying to achieve rather than simply completing a list of tasks. Communication with the team has always been easy and professional, and we have built a strong level of trust through our long-term cooperation.Overall, we’ve had a very positive experience working with Code Huddle and would be happy to recommend them to companies looking for a reliable long-term software development partner.
Muhammad Hamza Shahbaz's Review Sourced from Google
Joined this company back then in Jan 2026 as a Business Development Executive. The company's culture and the team building activities I experienced here, were even better than my previous company.You get to bring in new ideas, make the best use of tools, and listening leadership that is here to assist and guide you in your growth.
farheen tahir's Review Sourced from Google
Working at Code Huddle as a developer has been a rewarding experience. While there can be pressure during tight deadlines, it has only helped me develop better time management skills. It’s been an enriching journey so far.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsEngineering the Future of SaaS Development with Modern Solutions
Valynx LLC is an elite, US-registered remote software studio delivering high-performance Next.js, React, TypeScript, Python, and advanced AI agent integrations. We build custom SaaS platforms, intelligent automation flows, and cinematic, high-end UI/UX website rebuilds—like our recent scroll-driven Next.js...
Top Services:
- Software Development
- AI Development
- Software Testing
- Mobile App Development
- Web Design
- Show more
- Location
- Buffalo, New York
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsValynx LLC Services
Data sourced from the agency's DesignRush profileNoventis AI Harwoodlabs Inc GAT Software Innovations
Innovate | Connect | Inspire.
SRP Technologies is a premier technology solutions provider, renowned for its expertise in delivering cutting-edge innovations in Artificial Intelligence (AI), machine learning, and full-stack development...
Top Services:
- Staff Augmentation
- AI Development
- Mobile App Development
- Software Development
- Web Development
- Show more
- Location
- Karachi, Pakistan
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 9 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSRP Technologies Services
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SRP Technologies Reviews & Testimonials
artat asif's Review Sourced from Google
Recently, I visited SrpTech’s environment, and it is truly impressive. Every employee deserves such a workplace.
Aleema Khan's Review Sourced from Google
I have been working at SRP Technologies and it has been a great experience. The team is professional, supportive, and the work environment is very positive. I’ve learned a lot here and really value being part of this company.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsApps that inspire, solutions that empower.
Appelier is a mobile app development studio with a decade-long history of transforming our clients' visions into seamless mobile experiences. We blend Swift, Kotlin, Java, and Dart to craft intuitive apps for iOS, Android, and Flutter platforms. Passionate about design, we use Figma and Sketch to create...
Top Services:
- Mobile App Development
- Software Development
- Software Testing
- UI/UX Design
- Graphic Design
- Show more
- Location
- Chișinău, Moldova
- Number of Employees
- Under 49
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAppelier Services
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We are stardust. We design, develop and support web and mobile apps.
We are stardust. We design, develop and support web and mobile apps. We do a lot at stardust, but here are the services we offer most often to our clients. Stardust becomes your dev team. From product, to project management, to development, to QA we manage things end to end. Stardust crafts the user...
Top Services:
- AI Development
- Mobile App Development
- Software Development
- Software Testing
- Blockchain
- Show more
- Location
- Tallinn, Estonia
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsStardust Dev OÜ Services
Data sourced from the agency's DesignRush profileWellavi Niobi Ltd Extnd Productfirst Clipd ServiceBase
World Class Software Solutions
Internet Soft, an IT company excels in providing state-of-the-art solutions. Our offerings include Digital Transformation, AI/ML, IoT, Banking, and Blockchain software solutions, customized to serve both B2B and B2C customers...
Top Services:
- Mobile App Development
- Software Development
- AI Development
- Blockchain
- IoT
- Show more
- Location
- San Jose, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsInternet Soft Services
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Internet Soft Reviews & Testimonials
Marcus Coleman's Review Sourced from Google
"Internet Soft exceeded our expectations with their exceptional website development services. From the initial consultation to the final launch, their team demonstrated a high level of professionalism, expertise, and dedication to our project. They listened attentively to our requirements and translated our vision into a stunning and user-friendly website.The design they created is not only visually appealing but also highly functional, providing an excellent user experience for our visitors. They paid meticulous attention to detail, ensuring that every aspect of the website, from navigation to responsiveness, was top-notch.Moreover, their efficient project management and communication made the entire process smooth and transparent. They kept us informed at every stage and were responsive to our feedback, making adjustments promptly.Thanks to Internet Soft, our online presence has been significantly enhanced, and we've received numerous compliments from our clients and users about the website's design and functionality. We couldn't be happier with the results and highly recommend Internet Soft to anyone seeking top-tier web development services.Kudos to the Internet Soft team for their outstanding work in bringing our website vision to life!"
Steve Fecske's Review Sourced from Google
Internet Soft stepped in as my development team providing their team of programmers to my platform. They are a group of talented, skilled, and conscientious in everything they do, assigning the best people they have to the various types of technology I needed from UI/UX, php, API, and database. They adopted my platform as theirs and immersed themselves to learn the processes, concepts, and workflows needed to fulfill the promise of our platform's services. They apply their technical skills to understand and write the necessary algorithms. They work hard and diligently to get projects fully defined before undertaking, and then get it done on time. They test their work, present it to our marketing team, then tweak, then provide public testing, and only when ready, open full access to the target audience and advertising. They are well organized to execute our needs by providing a project manager and project leader who communicate with me as to what I want, select the right development talent, and then present it to them so they understand what is required. They have also given me direct access to the developers to further ensure they understand my vision and needs. I have enjoyed their hard work and we have endured the details. I look forward to the results, and proudly recommend Internet Soft for your technology.
Jenya Babadzhanova's Review Sourced from Google
Internet Soft is a great company with managers and employees that are motivated, reliable, and persistent in whatever they do. Their strong work ethic can be seen in the mobile apps and software development projects that they create. They keep up with industry trends and always keep the client first in mind. I highly recommend their services to anyone looking to start a tech project.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBuilt To Scale Backed By Trust
A trusted partner in software engineering and staff augmentation, delivering scalable products with a focus on quality over quantity. We provide comprehensive IT solutions tailored to your business needs...
Top Services:
- Web Development
- Staff Augmentation
- UI/UX Design
- Mobile App Development
- Software Development
- Show more
- Location
- Bronx, Idaho
- Number of Employees
- Under 49
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAMATECHXOFT INC. Services
Data sourced from the agency's DesignRush profileFlickpy PWC Growthforge Inc. Americare Inc Amefix IT
Simple Solutions to Complex Problems
The DV Factory is a premier consultancy specialising in providing industry experts and holistic project and application development teams for the delivery of initiatives in the VOT/OO, Performance Marketing & Data Automation spaces...
Top Services:
- Cloud Consulting
- Managed Services
- DevOps Consulting
- IT Services
- Business Consulting
- Show more
- Location
- London, United Kingdom
- Number of Employees
- Under 49
- Average Hourly Rate
- $75/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsThe DV Factory Services
Data sourced from the agency's DesignRush profileNBCUniversal Sky Channel 5 Discovery Eurosport Talktalk
Elevated in style
We create experiences that transform brands, grow businesses and make peoples lives better...
Top Services:
- SEO
- Digital Marketing
- eCommerce Development
- Digital Services
- Web Design
- Show more
- Location
- Jaipur, India
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAleaIT Solutions Pvt Ltd Services
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AleaIT Solutions Pvt Ltd Reviews & Testimonials

eCommerce Development Review from Ruben Arends
AleaIT Solutions continues to impress with its unwavering commitment to excellence, innovation, and customer satisfaction. The company consistently demonstrates outstanding leadership in its industry, delivering high-quality solutions that set a new standard for others to follow.Their ability to adapt to changing market conditions and embrace cutting-edge technologies has positioned them as a frontrunner in their field. With a strong track record of success, AleaIT Solutions not only meets but often exceeds expectations, building lasting relationships with clients and stakeholders alike.The team's dedication to both quality and efficiency is evident in every aspect of their work. Whether tackling complex challenges or driving continuous improvements, AleaIT Solutions remains focused on delivering tangible value and fostering growth for all involved.With a clear vision for the future and a reputation for excellence, AleaIT Solutions is poised to remain a leader in their industry for years to come.
manish jangid's Review Sourced from Google
I have been working as a web developer at AleaIT Solutions, and it has been a truly rewarding experience. The company fosters a supportive and collaborative environment where continuous learning and growth are strongly encouraged. Projects are diverse and involve modern technologies, which makes the work both challenging and exciting.Management is approachable and open to ideas, while teamwork and knowledge sharing are highly valued across the organization. I particularly appreciate the culture of transparent communication, constructive feedback, and the many opportunities to enhance both technical expertise and professional skills.Overall, AleaIT Solutions is an excellent place for career development, providing the right balance of learning, innovation, and professional growth.
Lalluji Luxe's Review Sourced from Google
We recently got our website designed and developed by Alea it , and the experience has been fantastic. The team was patient, attentive, and really took the time to understand our vision. They guided us with creative suggestions, solved problems quickly, and delivered a clean, elegant website that truly reflects our brand. Communication was smooth throughout, and the end result feels professional yet personal. Highly recommend them to anyone looking for a reliable and creative web team.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTurning ideas into scalable tech
Multi Techs Solutions works at the intersection of product engineering and real business problems. We design and build web platforms, mobile applications, and AI-based systems with a strong focus on performance, scalability, and clean architecture.Our approach is simple we dont overcomplicate things. We...
Top Services:
- Web Design
- Web Development
- eCommerce Development
- WordPress Website Design
- Software Testing
- Show more
- Location
- Lahore, Pakistan
- Number of Employees
- Under 49
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsMultiTechs Solutions Services
Data sourced from the agency's DesignRush profileeCommerce Industry AI Industry Food and Beverage Industry
Spark It. Build It. Scale It
Where great ideas get their spark. We're Sparkle Infotech a top-rated agency crafting custom digital solutions that drive real business results across the globe...
Top Services:
- Software Development
- Mobile App Development
- IT Services
- AI Development
- Software Testing
- Show more
- Location
- Surat, India
- Number of Employees
- Under 49
- Average Hourly Rate
- $15/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSparkle Infotech Services
Data sourced from the agency's DesignRush profileAI Industry Software & IT Services Industry Transportation & Logistics Industry
Sparkle Infotech Reviews & Testimonials
Jp Enterprise's Review Sourced from Google
I took services at Sparkle infotech and they created robust website to increase lead and my business.
Pavan Chaudhary's Review Sourced from Google
Great persons to work with and very hardworking. They can see the vision through and is very clear and concise when providing feedback.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsBuilding Digital Products
Were a Košice-based software house delivering team extensions, custom digital products, AI-enhanced solutions, and high-performance e-commerce development. With a modern tech stack and flexible top talent, we combine tech and business to build only what clients truly need. Efficiently and with impact...
Top Services:
- Web Design
- Web Development
- eCommerce Development
- eCommerce
- Software Development
- Show more
- Location
- Košice, Slovakia
- Number of Employees
- Under 49
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $1,000 - $10,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCassovia Code Services
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Cassovia Code Reviews & Testimonials
Jaro Kocis's Review Sourced from Google
I do not recommend - Be careful!!! This company created an application for us for which they promised us full support and care. The application was ultimately made by a high school student who had no experience, which would not have mattered if the application had worked as we agreed. When the student in question left the company after about half a year, the promised support and care also ended... The employees were not even able to provide me with the code and documentation for the application for which we paid a lot of money. This company is a perfect example of how it should not work.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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Frequently Asked Questions About Software Testing Companies
What services do software testing firms provide?
Software testing companies provide different testing services to identify errors, security risks, performance issues, and how the software behaves in real-life situations and across devices. As part of their software testing service, they also check if each feature works as expected, fix bugs, make improvements, and make sure new software development updates don’t break existing functions, so the software quality remains stable.
Core services include:
- Functional testing
- Performance testing
- Security testing
- Usability testing
- Regression testing
- Automation testing
- Accessibility testing
- Mobile app testing
- API testing
- Compatibility testing across devices/browsers
- Compliance testing
- Testing with artificial intelligence (AI) tools
- QA audit
How much do software testing services cost?
Hourly rates for QA testing range from $25 to $200+. The final cost is determined based on the size of the software or application, its complexity, required testing type, tech stack (custom-built and older legacy systems cost more), and niche.
The rate will also depend on the seniority of the software tester. Across the United States, junior quality assurance (QA) tester may charge $70 to $110 per hour, while the rate for a senior QA mentor and automation engineer can range from $130 to $200 per hour.
Special software testing services such as QA audit goes from $5,000 to $25,000.
How can businesses know what type of software testing do they need?
Businesses can determine what type of testing solutions they need based on the potential impact of failures and the likelihood of defects. Namely, if they encounter:
- Core functionality issues: Use functional testing to verify features work as expected
- Unstable code or new features: Use unit testing for individual components and integration testing for modules working together
- Poor system stability after updates: Seek regression testing to make sure new changes didn't break existing features
- Performance and load issues: Use performance and load testing to evaluate speed and scalability
- Security issues: Security and penetration testing are commonly used across apps handling sensitive user data
- Hard-to-navigate user experience (UX): Pursue usability testing to determine how intuitive the application is for end users
- Low compatibility across devices: Compatibility testing can evaluate how good the app works on different browsers, devices, and OS versions
There is also the option to choose between manual and automated testing.
Is automated testing more expensive than manual testing?
As an investment, automated testing is pricier than manual testing but offers a lower cost-per-test over time as it can run the same scripts repeatedly, without human intervention. Conversely, manual testing entails lower upfront fee, but its cost grows linearly as the project grows, as every test cycle requires paid hours from QA testers.
So, for short-term projects or ones with shifting requirements, manual testing is considered a more economical option, whereas for maintenance and regression cycles, automated testing grants better return on investment.
The main distinction between these methodologies is that manual testing relies on human observation and interaction to identify defects, whereas automated testing uses software scripts to compare outcomes against predicted results.
Manual testing is best suited for exploratory testing, usability assessments, ad-hoc bug hunting, and minor hotfix verifications where script development would be inefficient. Automated testing, on the other hand, is primarily used for regression testing to make sure the new code does not break existing features.
How do businesses measure the effectiveness of software testing?
The effectiveness of the software testing is measured via:
- Code coverage: The percentage of the code that has been tested
- Defect density: The number of defects found per unit of code
- Test case effectiveness: The percentage of test cases that identify defects; helps prune redundant and ineffective tests
- Time to detect and fix defects: The time it takes to identify and fix software defects and software bugs
- Defect leakage: The number of bugs that "escaped" to production versus those caught during the testing phase

















