We’ve researched and ranked the best California HTML5 mobile app development agencies that build sophisticated and high-quality apps that help brands drive more loyal customers and sales. Compare listings by past work, reviews, cost and size to pick the best fit for you.
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.
Webby Award-winning enterprise digital experience agency specializing in connected commerce, Shopify Plus & AI-powered products. 21 years. Google, Lyft, HP, Nike, Porsche. $250k$1M+ builds. Inc. 5000 #1601. FT Americas' Fastest Growing #131. Part of Together Group. Encinitas, CA...
Top Services:
- eCommerce Development
- Web Design
- UI/UX Design
- Web Development
- AI Development
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- Location
- Encinitas, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $200/hr
- Portfolios Count
- 17 Projects Listed
Pastilla is a full-service agency based in Los Angeles. We partner with public agencies, nonprofits, and global brands to turn complex missions into clear brand and digital experiences that build trust and move communities to action...
Top Services:
- Branding
- Design Services
- Graphic Design
- Web Design
- Web Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $185/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 18 Projects Listed
We are SunerGarcia. We are an innovative digital marketing agency that focuses on building around technology and consumer experience. We build exciting brand experiences for our clients. Our team is a fine assortment of movers and shakers, creatives, designers, planners, tech enthusiast, and all around hard...
Top Services:
- Web Design
- Web Development
- SEO
- PPC
- Software Development
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- Location
- San Diego, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $1,000 - $10,000
Idea Maker is a U.S.-based software development agency helping businesses transform ideas into scalable digital products. Our expert team specializes equally in mobile apps, custom software, AI-powered solutions, and modern web platforms...
Top Services:
- Mobile App Development
- Software Development
- Web Development
- AI Development
- Web Design
- Show more
- Location
- Irvine, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $125/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 10 Projects Listed
Making complex products simple, useful, and human...
Top Services:
- Digital Services
- Branding
- Product Design
- Web Design
- UI/UX Design
- Show more
- Location
- San Francisco, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $120/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 6 Projects Listed
Website Barrel stands as a distinguished professional website design company, providing cost-effective and tailor-made web development services executed by seasoned experts based in the USA. With a commitment to excellence, our team of skilled professionals utilizes their expertise to craft bespoke websites...
Top Services:
- Branding
- Logo Design
- Web Design
- Web Development
- Mobile App Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 3 Projects Listed
Montenegro Systems builds custom software and AI solutions for startups, growing businesses, and enterprises. We deliver end-to-end products and outsourced development teams, with a focus on construction, transportation, and real estate...
Top Services:
- Software Development
- AI Development
- Mobile App Development
- Staff Augmentation
- Managed Services
- Show more
- Location
- San Diego, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $50,000 & Up
At eQuality Software, we create digital solutions that drive real impact. With over 14 years of experience in mobile app development, our team specializes in designing and delivering scalable, intuitive, and high-performance applications tailored to your business goals...
Top Services:
- Mobile App Development
- Blockchain
- VR/AR
- eCommerce Development
- IoT
- Show more
- Location
- San Francisco, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 13 Projects Listed
Designli
VerifiedVerified by the DesignRush team for authenticity and credibility.AI LeaderRecognized for strong visibility across AI-powered search and answer engines.+1Award WinnerRecipient of a Best Design Award for outstanding work.Build software people actually pay for.
Designli blends founder-level care, AI-empowered engineers, and hypothesis-driven development to deliver tailored cross-platform apps that scale. A leading app development firm with 13+ years of expertise, it has served clients, like Michelin, the Bank of London, and Earthlink...
Top Services:
- Mobile App Development
- Software Development
- AI Development
- Web Development
- Web Design
- Show more
- Location
- San Francisco, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $85/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 17 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDesignli Services
Data sourced from the agency's DesignRush profileGoodwill Earthlink Rotary State of South Carolina Secur.Space Grappos Michelin Accel Entertainment Millennium Parking Garages
Designli Reviews & Testimonials
Mobile App Development Review from John Laporte
Designli helped us define the requirements, features, and user experience for an app for our motorcycle organization. They produced technical documentation and a clickable prototype covering navigation, member tools, and safety features. They were responsive, delivered on time every time, and turned our broad concepts into something people could actually click through. The prototype got our stakeholders aligned, earned internal approval, and set us up for engineering, and working out design questions early should save us rework later.
Mobile App Development Review from Brandi Heffner
Designli built our SaaS product from scratch, using AI to speed up development, with AWS and Cloudflare in the stack, and they also handle our hosting and maintenance. We had a working MVP in just 30 days and have kept adding features since. In the first 60 days they went beyond what we expected, largely because they took the time to really learn our business and our market. Coordination through Basecamp and Google Meet has kept everything organized.
Mobile App Development Review from Thomas Simmons
Designli took over app development and marketing for our driving school, with the goal of building a product we could eventually offer to other schools. Within two and a half months, the app was up and running in our own school. Their project management is excellent, and they push back constructively, thinking through what we actually need instead of building every request as-is.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsThirdEye Data Transforms Enterprises with Data & AI Solutions & Services. ThirdEye Data leverages Artificial Intelligence & Data technologies to build AI applications for enterprises worldwide...
Top Services:
- AI Development
- Big Data Analytics
- Software Development
- IT Services
- Staff Augmentation
- Show more
- Location
- San Jose, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $55/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 23 Projects Listed
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
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 ReviewsAPPSNATION is the USA's top leading mobile application development company providing multiple Mobile App development services in IOs, Android, IoT, AR/VR, Games app development, Cross-platform, Wearable, eCommerce and much more. Contact Us to boost your Company's potential for next-level excellence...
Top Services:
- VR/AR
- Mobile App Development
- Wearables
- Software Development
- Social Media Marketing
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 7 Projects Listed
Ayatas Technologies is a digital commerce agency, boasting a robust legacy of 15 years marked by unparalleled experience, unwavering expertise, & a dynamic team dedicated to pushing the boundaries of innovation. Specializing in website design, e-commerce solutions, and custom software development...
Top Services:
- eCommerce Development
- Web Development
- WordPress Website Design
- Web Design
- Mobile App Development
- Show more
- Location
- Sacramento, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Portfolios Count
- 19 Projects Listed
We're a global team of developers, designers, and problem-solvers creating impactful software since 2007. IT-Dimension builds future-ready software from AI and IoT to mobile, enterprise, and 3D solutions...
Top Services:
- IT Services
- Mobile App Development
- Web Development
- Product Design
- Web Design
- Show more
- Location
- West Hollywood, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $49/hr
- Portfolios Count
- 4 Projects Listed
Megamax Services helps businesses manage IT, modernize legacy systems like IBM iSeries/AS400, move to the cloud, build custom software, and strengthen cybersecurity. With 300+ IT professionals across 12 global delivery centers, it also offers DevOps, data & AI services, and Kasturi HRMS...
Top Services:
- Cybersecurity
- IT Services
- Web Development
- Digital Marketing
- Software Development
- Show more
- Location
- San Jose, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $48/hr
- Minimal Budget
- $1,000 - $10,000
Solveit
Award WinnerRecipient of a Best Design Award for outstanding work.We design and develop top-rated mobile and web apps for startups and SMEs. E-commerce, Healthcare, Marketplaces, and more. Our clients rate us for 5 out 5 - check out why!...
Top Services:
- Mobile App Development
- Software Development
- Web Design
- Design Services
- AI Development
- Show more
- Location
- San Francisco, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 32 Projects Listed
Next-Generation AI Development Company - Transforming Ideas into Intelligent RealityDreamSoft4u is pioneering the future of AI-powered software development with cutting-edge Generative AI solutions that deliver measurable business impact...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- IoT
- AI Development
- Show more
- Location
- Corona, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $40/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 18 Projects Listed
Netpace designs and develops websites, digital products, web applications, mobile apps, and custom software for businesses across industries. Our work combines thoughtful UI/UX, modern engineering, scalable technology, and AI capabilities to create digital experiences that are intuitive, functional, and built...
Top Services:
- Web Development
- eCommerce Development
- Web Design
- Software Development
- AI Development
- Show more
- Location
- San Ramon, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $40/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 5 Projects Listed
HDWEBSOFT is a leading software outsourcing company in Vietnam, known for its high-quality services, affordable pricing, and reliable team. With over 250 experienced engineers and a decade of expertise, HDWEBSOFT has helped businesses of all sizes from around the world to develop and launch successful...
Top Services:
- Web Development
- IoT
- Mobile App Development
- Software Development
- Big Data Analytics
- Show more
- Location
- Pasadena, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 12 Projects Listed
NEKLO is an international custom software development partner. Since 2008, weve specialized in building and scaling digital products for high-stakes industries, including Healthcare, Fintech, Energy, and Construction...
Top Services:
- AI Development
- Software Development
- Mobile App Development
- Product Design
- Software Testing
- Show more
- Location
- Burlingame, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 4 Projects Listed
SoluLab is an AI consulting and software engineering company with a focus on generative AI and blockchain. Founded in 2014, we work with startups, SMBs and enterprises that have a specific business problem and want a team that can scope it, build it and keep it running...
Top Services:
- Software Development
- Web Development
- Web Design
- UI/UX Design
- IoT
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 11 Projects Listed
AQe Digital specializes in enterprise software engineering and digital transformation. With 25+ years of experience, we deliver custom development, cloud-native ERP, AI/ML, RPA, IoT, UX/UI, and integrations that modernize systems and streamline operations...
Top Services:
- Software Development
- Mobile App Development
- Branding
- Product Design
- AI Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
We are global web3.0 Software engineering company making success stories for more two decades with highly motivated and experience teams and a proven agile framework. we prioritize the commercial goal of our customer deliver the highest business value. we are a renowned blockchain app development company in...
Top Services:
- Blockchain
- AI Development
- Mobile App Development
- Software Development
- Web Design
- Show more
- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 7 Projects Listed
Seasia Infotech is a global AI-powered digital engineering company with 25+ years of experience delivering custom software, AI solutions, cloud applications, mobile apps, and enterprise platforms. We help businesses accelerate innovation, improve efficiency, and drive digital transformation...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- AI Development
- Big Data Analytics
- Show more
- Location
- Emeryville, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 65 Projects Listed
Perimattic is a technology partner specializing in AI development, software development, cloud solutions, DevOps, MLOps, and enterprise technology services. The company helps startups, growing businesses, and enterprises build secure, scalable, and high-performance digital solutions...
Top Services:
- AI Development
- DevOps Consulting
- Cloud Consulting
- Software Testing
- Software Development
- Show more
- Location
- San Francisco, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
Founded in 2000, Radixweb is a global leader in AI-driven software, product engineering & digital transformation. With 25+ yrs, 650+ experts & 5,500+ projects for 3,000+ clients in 25+ countries, we deliver cloud & AI solutions across industries, driving innovation, agility & growth...
Top Services:
- Software Development
- Web Development
- eCommerce Development
- Mobile App Development
- IT Services
- Show more
- Location
- Artesia, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $25/hr
- Portfolios Count
- 24 Projects Listed
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
Experience-driven engineering to digitally transform your business to stay ahead. We understand your vision and help you build your thoughts into world-class software products. We work with businesses and individuals to help build world-class products and incubate them to grow. Trust us as your technology...
Top Services:
- Mobile App Development
- Web Development
- eCommerce Development
- WordPress Website Design
- AI Development
- Show more
- Location
- Pleasanton, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
We are IT company which provides services in various domains like Logistics, Health, e-commerce, etc. We have expert-level knowledge in web development and mobile development, as well as proficient knowledge of latest IOT-based applications using various AWS services...
Top Services:
- Web Design
- eCommerce Development
- Web Development
- DevOps Consulting
- Software Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 6 Projects Listed
DS Technologies is a global web design, development, and digital marketing agency. We specialize in creating innovative, custom solutions that drive measurable results. With expertise in SEO, UI/UX, and scalable web applications, we help businesses worldwide grow their digital presence and achieve sustainable...
Top Services:
- Graphic Design
- Web Design
- eCommerce Development
- Web Development
- UI/UX Design
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
Logicspice is a well-established mobile app and web development company that boasts over 18+ years of experience and has successfully completed over 2000 projects with a significant number of repeat clients...
Top Services:
- Software Development
- UI/UX Design
- Web Design
- Mobile App Development
- Blockchain
- Show more
- Location
- Beverly Hills, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $21/hr
- Portfolios Count
- 8 Projects Listed
Enterprise Software Development and Maintenance Services Provider...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- AI Development
- IT Services
- Show more
- Location
- California City, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 10 Projects Listed
ACUBE USAL LLC is a US registered custom Software development company delivering solutions in web, mobile & AI-driven solutions to companies across the US, Europe and Australia. We have proven experience in delivering solutions into education, healthcare, real-estate, E-commerce, logistics, food compliance...
Top Services:
- Mobile App Development
- Location
- Nevada City, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
We design highly polished iPhone, Android and Web Apps for startups and Enterprise clients...
Top Services:
- Mobile App Development
- Web Development
- UI/UX Design
- IoT
- Digital Marketing
- Show more
- Location
- Sunnyvale, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $15/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 3 Projects Listed
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