Searching for a top-rated application modernization services company to future-proof your business? Our directory provides industry-leading experts specializing in transforming legacy systems. With insights from verified client experiences and success stories, we make it easy for you to compare options based on location, budget, and hourly rates to find your next agency partner.
Best App Modernization Services Agencies
1,112 Companies - Rankings updated: July 15, 2026
All mobile app development firms on DesignRush have been assessed for their expertise, portfolio, and verified client reviews. Some listings may be paid.
Top-rated Mobile Apps, AI/ML, Blockchain Development Company.
Top-rated Mobile Apps, AI/ML, Blockchain Development Company.
Junkies Coder is a leading technology solution provider across 15 countries and 50+ Rockstar Developers is our strength, We're specializing in web development, Top-rated Mobile App Development, and innovative solutions. Our experienced team is dedicated to delivering high-quality service and support to help... View Junkies Coder portfolio | View all reviews
Unico Connect uses AI-native engineering to build smarter apps faster. Its offerings include native, cross-platform, low-code, and API development, and app modernization, migration, and optimization. A leading app development company with 12+ years of experience, it has delivered 350+ products... View Unico Connect portfolio | View all reviews
Developing Software That Writes Your Success Story
Developing Software That Writes Your Success Story
AppVerticals is a product engineering company with comprehensive AI capabilities, building mobile apps, web, SaaS, software, and AI products for startups and Fortune 500s, built to grow users, raise capital, and outpace the competition... View AppVerticals portfolio | View all reviews
Software development company that delivers measurable results.
Software development company that delivers measurable results.
SparxIT is an AI-driven technology partner delivering intelligent software solutions, AI development, cloud transformation, and digital products. We build scalable platforms powered by AI, ML, and automation for startups and enterprises. Trusted by HP, Suzuki, and Hisense... View Sparx IT portfolio | View all reviews
Product Engineering | Intelligent Automation & AI Adoption
Product Engineering | Intelligent Automation & AI Adoption
Gera-IT is a digital studio established in 2006.We develop fantastic apps to help businesses become more profitable and cost-effective... View Gera-IT portfolio | View all reviews
An active contributor to the React Native and Flutter ecosystems, GeekyAnts builds native iOS, Android, and cross-platform apps with offline-first architecture, performance auditing, and AI integration baked in. Founded in 2006, it has 550+ engagements and counts WeWork and Darden among its clients... View GeekyAnts portfolio | View all reviews
DICEUS is a product-led technology company delivering next-generation insurance software solutions, system integration, and product engineering services. Since 2011, weve empowered insurers and brokers to enhance operational efficiency, automate core processes, and elevate customer experiences... View DICEUS portfolio | View all reviews
Engineering for live products where mistakes are expensive.
Engineering for live products where mistakes are expensive.
KITRUM is an engineering partner focused on building on top of live software products. We help them grow beyond their original design by modernizing architecture, adding new capabilities, and scaling systems without disrupting what already works... View KitRUM portfolio | View all reviews
Doodle N Dash is a creative design agency focused on transforming ideas into impactful digital experiences. By combining design, development, and marketing expertise, the agency helps brands build a strong online presence, stand out visually, and achieve measurable growth... View all reviews
The electrifying force that will take your business to new heights.
The electrifying force that will take your business to new heights.
We're Volts Consulting, a team of design experts and marketing strategists passionate about turning your online presence into a powerful growth engine... View all reviews
Dev Technosys is an ISO9001:2015-certified software development company founded in 2010, offering comprehensive IT solutions including custom web and mobile development, IoT, ERP/CRM, on-demand apps, and e-commerce platforms. The firm delivers tailored engineering services to clients in over 70 countries... View Dev Technosys portfolio | View all reviews
Timspark is an innovative software development company that endeavors to deliver the highest quality work to clients who look to address their challenges with custom technology. Our one-of-a-kind business model fuels and cultivates fully-fledged independent development teams and motivates each engineer to... View Timspark portfolio | View all reviews
A Reliable Full-Service Software Development, Cloud, DevOps and QA Partner
A Reliable Full-Service Software Development, Cloud, DevOps and QA Partner
Leveraging 30 years of excellence designing, developing, deploying and supporting world-class software solutions, Kanda Software has established itself as a trusted Software Development, Cloud Engineering, DevOps and QA partner for companies ranging from innovative startups to large enterprises... View Kanda Software portfolio | View all reviews
Alt Digital Technologies is a B2B service provider servicing end to end development, DevOps, Testing and e-commerce solutions for your business. We work efficiently in ATG, Java, React, Salesforce, WordPress and majorly all technologies... View Alt Digital portfolio | View all reviews
Talentica specializes in mobile and wearable apps spanning BLE/NFC integrations, cybersecurity SDKs, and AI-native features, using an AI-powered engineering approach that cuts cycle time by 50%. With 22 years of experience, it has shipped 200+ products and supported 30+ successful client exits... View Talentica Software portfolio | View all reviews
Level Level is a high-end WordPress agency from Rotterdam. We engineer complex, large-scale platforms for enterprise and public sector clients. No templates, no shortcuts. We deliver bespoke, secure solutions with an unwavering focus on accessibility (WCAG 2.2), performance, and clean code... View Level Level portfolio | View all reviews
Social Link specializes in delivering exceptional social media marketing services to help businesses thrive in the digital landscape... View Social Link portfolio | View all reviews
NextLink Labs serves as a steadfast ally in DevOps consulting, nurturing businesses across diverse industries towards sustainable development and expansion... View NextLink Labs portfolio | View all reviews
We Are Your Solution For Localization and Content Production.
We Are Your Solution For Localization and Content Production.
Localization and content creation services all under one roof. Let us be your localization or content creation partner. Marketing, Training, Documents, websites and apps - let our team handle your work and be your ongoing partner all without the never ending outsourcing chain... View 2002 Studios Media LTD portfolio | View all reviews
Your business faces unique challenges. Let's work together to create a custom mobile app or web solution to meet those challenges head-on... View Zco Corporation portfolio | View all reviews
Building your digital storefront, designed to sell.
Building your digital storefront, designed to sell.
WubSites is your one-stop shop for digital solutions. We design beautiful websites and e-commerce platforms, optimize them for SEO and mobile, and manage your IT infrastructure. We also offer media planning, graphic design, digital advertising, SEO, and social media management. Let us help you elevate your... View WubSites portfolio | View all reviews
EitBiz has been a trusted provider of software, mobile app, and web development services since 2017, helping businesses thrive in the digital age. Our team of experts crafts innovative solutions that align with your business goals and enhance your brand's value... View EitBiz portfolio | View all reviews
Building Trust, Scaling Success: Your DevOps Journey Starts Here
Building Trust, Scaling Success: Your DevOps Journey Starts Here
We know for sure that the process of scaling is always a challenge, therefore we are always in touch with our clients: since the moment of infrastructure audit, during critical loads and to the successful launch of the project. We are fully responsible for the quality of our work... View Quema portfolio | View all reviews
Resourcifi is a leading outsourcing company that specializes in providing high-quality and cost-effective solutions for businesses worldwide. With a team of skilled professionals and a client-centric approach, we offer a range of services tailored to meet diverse business needs... View Resourcifi portfolio | View all reviews
Organizing the teamwork with the client, we dive deep into their business needs and find the optimal way to reach the final goal with software... View IntexSoft portfolio | View all reviews
Zoolatech provides engineering excellencewhether you need team augmentation or complete product deliverytrusted by startups and Fortune 500s worldwide... View Zoolatech portfolio
Busy Building Solutions, Buzzing through the Future. Lets Build Your Vision!
Busy Building Solutions, Buzzing through the Future. Lets Build Your Vision!
At Beejern, we discussed the argument about how technology is good in a changing world. As your software development partner, we offer you best-of breed ideas and flawless solutions that match your business... View Beejern Limited Liability Company portfolio | View all reviews
Matellio is a leading software engineering studio, recognized globally for delivering intelligent solutions powered by Artificial Intelligence and Machine Learning. We specialize in developing customized AI solutions tailored to various needs of businesses under different industry verticals... View Matellio Inc. portfolio | View all reviews
Software Development / Technology Consulting / Dedicated Developers
Software Development / Technology Consulting / Dedicated Developers
Scalo delivers native iOS and Android apps alongside cross-platform Flutter and React Native solutions, with automated testing, CI/CD pipelines, and observability built into every release cycle. Backed by 19+ years of experience and 600+ engineers, it has completed 750+ projects across 10+ industries... View SCALO portfolio | View all reviews
Trusted IT Partner for SMBs & Enterprises Since 2001 | Dedicated Teams | Industry-Specific Solutions
Trusted IT Partner for SMBs & Enterprises Since 2001 | Dedicated Teams | Industry-Specific Solutions
Altoros is a 350+ person strong IT consulting and development group. For over 20 years, we've been assisting Global 2000 organizations in getting software products to market faster and reducing the cost of R&D experiments to enable stable business growth... View Altoros Labs portfolio | View all reviews
Bostoneo elevates brands by applying digital engineering principles to every aspect of our work. From meticulous design to strategic optimization, we engineer digital solutions that elevate brands above the competition, driving growth and fostering meaningful connections with audiences... View all reviews
Blackthorn Vision is a Microsoft-partnered .NET and AI development company.As a Microsoft Solutions Partner,we help enterprise teams build and modernize complex software products. The solutions we deliver are backed by deep .NET expertise,AI versatility,and a track record of delivering results... View Blackthorn Vision portfolio
We are Vitec and we help people worldwide not only to build IT Solutions from scratch, but to make them successful. As a 360° Software Development Partner, we take care of everything to design our partner's business models digitally... View Vitec GmbH portfolio | View all reviews
IZISS Technology is a pioneering Business Consulting, Technology Research and Software Development Company specialized in offering hi-end and multi-dimensional online and offline solutions such as web development, mobile apps development, AR/VR solutions and custom applications development for businesses of... View Iziss Technology Pvt Ltd portfolio | View all reviews
A global technology outsourcing and custom Development Company with expertise into diverse Web Development, Custom Software and Mobile Applications... View Cmarix portfolio | View all reviews
We are an award winning full-service creative and digital agency that brings bold ideas to life through a powerful mix of strategy, storytelling, and execution. Headquartered in India with a strong presence in Dubai, we are committed to turning visions into scalable marketing success... View The Go-To Guy portfolio | View all reviews
We help clients achieve transformative digital experiences through App Development. Stakk’s unparalleled skills in iOS, Android, Flutter, and React Native consistently deliver impressive results for brands like LNER Trains and The British Museum. Let’s elevate your product with expert design, management... View Stakk portfolio | View all reviews
At RichestSoft, we don't just build apps; we create seamless digital experiences that automate businesses. As a leading Mobile App and Web Development Company, we partner with visionary companies to bring their ideas to life, blending their vision with our cutting-edge technical expertise to spark future... View RichestSoft portfolio | View all reviews
Custom software solutions and innovative services crafted to meet your business goals.
Custom software solutions and innovative services crafted to meet your business goals.
A boutique software agency specializing in custom, innovative solutions to your unique requirements. Our entire development team is located in North America... View Ollon Software Agency portfolio | View all reviews
Si3 Digital Agency creates exceptional website design, Develop eCommerce web, Mobile Apps, SEO Services, Social Media Management campaigns many more digital services for businesses in Abu Dhabi, Dubai, Sharjah & across UAE... View Si3 Digital portfolio | View all reviews
We help growing companies modernize and scale their web platforms.Our focus is building high-performance, SEO-ready, and content-scalable systems using modern web architecture... View Pagepro portfolio | View all reviews
JumpGrowth is a premier AI-led product engineering studio headquartered in Dallas, Texas. JumpGrowth specializes in building scalable, AI-powered software applications and products tailored for tech startups and enterprise innovation teams... View JumpGrowth portfolio | View all reviews
ZAPTA Technologies is a global technology partner helping startups and SMEs build, scale, and modernize software products through digital and AI innovation. We deliver secure, performance-driven platforms designed to grow with the business... View ZAPTA Technologies portfolio | View all reviews
Selina Garcia has authored 500+ articles and edited 50+ published books in economics, law, and history. Her unique blend of experiences allows her to approach content creation from a well-rounded perspective. Currently, Selina applies her expertise to producing insightful articles on IT, software, and applications for DesignRush.
Sergio is a technology leader with over six years of experience managing global teams and delivering projects across fintech, sportstech, and B2B platforms. At DesignRush, he drove product growth and development execution, building tools that speed up processes by 95% and cut costs by 35% while maintaining full uptime.
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