Our expert analysts determined the best California Android app development agencies that build high performance and well-secured apps that drive user loyalty and engagement. You can filter listings by budget, size and reviews to select the best partner for your needs.
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.

Yalantis
VerifiedVerified by the DesignRush team for authenticity and credibility.Full-cycle tech partner with deep expertise in IoT
We deliver cutting-edge, scalable, and fully functional IoT hardware and software products and ecosystems that help clients achieve their specific objectives...
Top Services:
- IoT
- Software Development
- Mobile App Development
- AI Development
- Big Data Analytics
- Show more
- Location
- California City, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 24 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsYalantis Services
Data sourced from the agency's DesignRush profileRAKwireless Toyota Tsusho KPMG Healthfully Orbis Systems Lifeworks Scholz Databank 123 Sourcing Truhoo
Yalantis Reviews & Testimonials

Fintech Review from Sergei Lishchenko
The exception team the client collaborated with brought in fresh ideas and innovative technologies previously unfamiliar to the client. For example, with Yalantis' guidance, the client's developers explore the Go language. The primary reason the client chose Yalantis is its strong organizational and project management skills. It's not just about the developers; Yalantis provides a comprehensive support framework, ensuring that a project manager is consistently present. (Verified via email)
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Software Development Review from Jason Jung
Yalantis functions as an integral scrum team, supporting the development teams of a real estate firm. It created renovation project management tools that encompass a web app, a mobile app, and a backend system. Thanks to Yalantis, the client expanded development capabilities and achieved key short-term goals. Its quick integration was pivotal in launching various projects. Beyond delivering top-notch work, Yalantis emphasizes a culture that prioritizes the customer's needs. (Verified via email)
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Outsourcing Review from Roy D
An IoT manufacturer teamed up with Yalantis to craft an application, enabling users to manage their devices more efficiently. Utilizing Node.js and basing the architecture on Circulus, Yalantis delivered commendable outcomes. It is responsive to any development challenges, offering swift resolutions. The client appreciates Yalantis' proactive stance, impressive technical expertise, and practical solution suggestions. (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsFUELING DISRUPTION
App Development is at the heart of what we do. EffectiveSoft stands out because we turn your ideas into reliable digital products, supporting you from concept to launch and beyond. Our collaborative approach yields unmatched expertise in software, AI, and cloud solutions for your growth...
Top Services:
- Software Development
- Mobile App Development
- Big Data Analytics
- AI Development
- ERP Consulting
- Show more
- Location
- San Diego, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 29 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsEffectiveSoft Services
Data sourced from the agency's DesignRush profileCITY INDEX TruBridge CNote Plato Intelon Optics InCheq Nissin Foods Soutron Ltd. BullionRock InContinuum
EffectiveSoft Reviews & Testimonials

Software Development Review from Alex Silverstein
Over the past 13 years, I’ve valued the opportunity to work alongside this team. Their expertise played a central role in my company’s success, and I’ve come to rely on them for their consistency, attention to detail, and thoughtful approach.

Software Development Review from Philipe Araujo
We have had a highly positive experience utilizing EffectiveSoft's staff augmentation services for our Business Analyst and Quality Engineer needs. The professionals provided were not only highly skilled and knowledgeable but also integrated seamlessly with our existing team, requiring minimal ramp-up time. Their expertise in their respective fields significantly enhanced our project's efficiency and overall quality. We confidently recommend EffectiveSoft for any organization seeking top-tier talent to augment their teams and drive successful project outcomes.
Software Development Review from Sasja Ihn Christensen
Maersk Broker is pleased to provide this reference letter for EffectiveSoft, our trusted collaborator for complex web projects. From the initial stages of our projects, the team at EffectiveSoft demonstrated a deep understanding of our requirements and have been apro-active part of any problem-solving process. The team of offshore developers has been well-run through their lead developer, and we have only experienced a professional approach to our projects, as well as a pleasant and trust-based collaboration = between all members in the EffectiveSoft team and our own team. EffectiveSoft has furthermore proved to be highly flexible, adapting to our evolving needs and delivering reliable results under shifting circumstances and shifting priorities. They have furthermore been very quick to find and add the necessary resources to the team when needed, and we have only experienced professional and highly skilled consultants. This has also made on-boarding into projects faster and more efficient.In conclusion, it has been a pleasure working with EffectiveSoft, and I have no doubt that they will continue to be an asset to any collaborators in the future, adding value through their professionalism, dedication and understanding of business needs.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTrusted 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...
Top Services:
- Software Development
- Mobile App Development
- Web Design
- Web Development
- Staff Augmentation
- Show more
- Location
- Pleasanton, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 12 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsAltoros Labs Services
Data sourced from the agency's DesignRush profileSiemens Toyota Hitachi Huawei Denso LikeFolio Dealflo iFit Walmart EQ Bank
Altoros Labs Reviews & Testimonials

Software Development Review from Daria Stolyar
We hired Altoros engineers as an essential extension of our client-facing internal teams. This was a tough decision because our reputation as a brand depends on the overall efficiency of our processes and we needed to make sure all risks are mitigated when it comes to delivery. Altoros has not let us down.Together with Altorosians we successfully deployed a number of tough and technologically complex projects on time. So our collaboration is certainly set to continue.

Software Development Review from Victoria Lewis
We enjoy working with our team, Roman Yurkin, Tatyana Kobzar, Svetlana Kalchanka and Tatiana Anop. They bring expertise and immense value to our business with each piece of work they complete. They are a major part of our business development and delivery.

Ruby on Rails Review from Greg Lipper
In my 30 years in the software business, I have never had as positive an experience with an outsourced development services provider as I have with Altoros. Each Altoros engineer we have worked with has been strong technically, estimated development times accurately, completed projects on time, and delivered code and projects with high quality. Beyond that, they have helped improve our thinking and approach with suggestions and ideas that were better than the spec of instructions we supplied.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsYour AI-Driven Software Development Partner
Savvycom is an AI-driven software development and IT consulting company founded in 2009, helping enterprises design, build, and modernize digital systems that deliver measurable business outcomes. Recognized as one of Vietnams Top 10 Digital Technology Companies, Savvycom partners with organizations...
Top Services:
- Mobile App Development
- Software Development
- Web Development
- IT Services
- AI Development
- Show more
- Location
- Laguna Beach, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 9 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSavvycom Services
Data sourced from the agency's DesignRush profileKB Bank Citeco. Capsikin Path. North America & Europe: TaylorMade
Savvycom Reviews & Testimonials
Amelia's Review Sourced from Google
Working with Savvycom was a positive experience. The team was professional, responsive, and delivered quality work on time. Communication was smooth, and they were always willing to help when needed. Highly satisfied with the collaboration.
Nguyên Ngọc's Review Sourced from Google
From my perspective as a former employee: I worked here for almost a year. Colleagues and staffs here are pretty open-minded but employees are highly underpaid. Also in order to get a job here you must have decent technical skills and English language ability.Pros: nice office, friendly staffs that really take care of employeesCons: underpaid salary
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWe Are Focused on Making Things Work for You and Your Business!
COFA Media uses a people-based approach to deliver exceptional branding services. Their digital marketing team focuses on each client's unique audience, which results in a high client satisfaction rate. Some of COFA Media's core services include e-commerce, website design, social media, SEO, interaction & UX...
Top Services:
- eCommerce Development
- WordPress Website Design
- Mobile App Development
- eCommerce
- Branding
- Show more
- Location
- Carlsbad, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $125/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsCofa Media Services
Data sourced from the agency's DesignRush profileDexcom HayHouse Toyota Bosch Ra Medical Alerian Burton Club Med WD-40 Bumble Bee
Cofa Media Reviews & Testimonials
Cody B's Review Sourced from Google
Extremely professional team and talented designers. I've worked with many teams in digital marketing but Cofa Media is my first choice if the business needs a serious marketing platform and wants to grow there business online.
Chad Dannecker's Review Sourced from Google
Edwin and his team did some website work for us and I highly recommend them. I got straight answers, quality work and they were accountable to delivering everything they said they would. My experience was a good one and in the digital space, I've been disappointed by many large companies. I highly recommend!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsThat Tell Your Story -And Drive Results
At SPINX Digital, their team of innovators, digital marketers, and video editors in tech and design, bring skills above and beyond the ordinary to every project...
Top Services:
- eCommerce Development
- Web Design
- Mobile App Development
- Branding
- Digital Marketing
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $25,000 - $50,000
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsSPINX Digital Services
Data sourced from the agency's DesignRush profileBeats Audio Wet n Wild Beauty Transwestern GE Healthcare
SPINX Digital Reviews & Testimonials
Beverly Hills Ghost The Movie's Review Sourced from Google
The team at Spinx Digital exceeded our expectations. From the moment I contacted them and began discussing our company’s website design needs and possible solutions, I knew we were in excellent hands.We came to them seeking a redesign. The prior design took seven months to be completed and launched. Given our lack of prior experience with web design, we did not realize how much less arduous the process can be. Even after expending such considerable time and effort, the resulting site was clunky-looking, didn't adapt well, and was overly difficult to manage.The Spinx team not only listened carefully and were very responsive to questions and concerns throughout the redesign process, they delivered an outstanding design that is adaptive to our needs, looks great on all devices and platforms, and is very easy to manage. Not only did they do a terrific job, they had us up and running within a few weeks. I highly recommend Spinx Digital to anyone looking for a top-notch design team that is truly a pleasure to work with.- MissDirection Entertainment, LLC
JRMA Architects Engineers's Review Sourced from Google
There are design companies, and then there are user experience, design, consulting, interface design, brilliant, and professional. SPINX Digital, is by far all & more.When we decided to redesign our website, our vision was to bring to life our diverse portfolio that define us as a team of Architects & Engineers. We were thrilled when we found SPINX Digital Designs team. They took our portfolio and made it come to life.The level of experience, thought and care that went into our website was amazing! Not only have we been constantly amazed at the depth of understanding on many different business models, we found ourselves working with a team of friends.We highly recommend anyone looking for the best customer experience and professional designs. We feel that in this business we let the work do the talking and the portfolio and ethics of SPINX Digital clearly speaks for itself.Thanks so much for creating a website that speaks to what our company motto is – clean, clear, and concise.From your friendsJRMA Team
Tameka Flores's Review Sourced from Google
We were looking for a web design company that could lead the launch of three new websites to help drive our business. We selected Spinx Digital and couldn’t be happier! Spinx has truly become a trusted partner and one that we rely on to bring our visions to life, no matter how detailed they are. Their quality of work is top notch and so is their responsiveness and support. I know that I can always count on them to keep our websites looking and performing at their very best. I highly recommend Spinx Digital for any company looking to take their websites and digital marketing efforts to the next level.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsTranslating Ideas & Research to Market
KritiKal Solutions is a technology design house and holds 22+ years of experience in AI, Computer Vision, Software Applications, Cloud and Mobile-based Solutions, Embedded Systems, Generative AI and Large Language Models. We specialize in R&D, product engineering, and innovation services...
Top Services:
- AI Development
- IoT
- Mobile App Development
- Software Development
- Wearables
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 4 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsKritikal Solution Services
Data sourced from the agency's DesignRush profileVector USA BYJU'S P&G Columbus Continental Honeywell ITC Stryker G&D University of Berkeley
Kritikal Solution Reviews & Testimonials
Aakriti Bhatnagar's Review Sourced from Google
Great place to work.Very good learning opportunity.Best place for freshers to learn and gain knowledge.Supportive and understanding colleagues.
Jobin John's Review Sourced from Google
One of the best aspects of working at KritiKal Solutions is the opportunity to collaborate with talented professionals across multiple domains. The company promotes a culture of innovation, knowledge sharing, and continuous improvement.
twinkle kumari's Review Sourced from Google
A great workplace that encourages continuous learning, teamwork, and professional growth. The management maintains an open-door policy, making it easy to share ideas and collaborate across all levels of the organization.
Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
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