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.
Best HTML5 Mobile App Development Agencies in California
199 Companies - Rankings updated: March 31, 2026
Every agency on DesignRush meets evaluation criteria around expertise and client feedback to empower informed choices. Some listings include paid partnerships.
Software, Mobile App, Games Development Company.
The App Founders is a recognized leader in the mobile app development industry that excels in building mobile apps to upscale your business and bolster your customer retention rate. Well transform your idea into a market-ready application on schedule and within budget. [... view The App Founders profile ]- Location
- Santa Clara, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $70/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 16 Projects Listed
We Accelerate Your Technology Excellence.
First Line Software is a global AI services and technology partner helping organizations become AI-First.Since 2010, weve worked with enterprises and high-growth companies to design, build, and scale custom software and AI-driven solutions that deliver measurable business outcomes. [... see all First Line Software reviews ]- Location
- San Mateo, California
- Number of Employees
- 500 - 999
- Portfolios Count
- 4 Projects Listed
Honest, Practical, & Focused On Results
Founded in 2005 in Reading (UK) Naxtech is a Digital Agency focusing on helping businesses grow, increase profitability, while attracting new customers via the effective use of technology and digital marketing. [... view Naxtech profile ]- Location
- San Francisco, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 3 Projects Listed
Driving Change Through Technology
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. [... view Equality Software profile ]- 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
Web Design & Development Company Anchored in Los Angeles, CA
We're a leading web design & development company in Los Angeles, CA – Specializing in UI/UX Design, Web Design, Product Design, & Web Development. [... view Black Flag Creative profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $149/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Cider Is the Leading Software Development Company in the San Francisco Bay Area.
Cidersoft builds compelling apps and websites that will strengthen the success of your business. [... see all Cidersoft reviews ]- Location
- San Ramon, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $65/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
Look forward to a sustainable future with us!
Avanade is a leading digital innovator that offers a comprehensive suite of services to empower businesses with transformative technology solutions. [... view Avanade profile ]- Location
- El Segundo, California
- Number of Employees
- 1000 & Up
- Portfolios Count
- 3 Projects Listed
Engineering Peace of Mind in Regulated Industries
Binariks is a global technology consulting and engineering company focused on regulated industries. We architect secure, audit-ready digital platforms for Healthcare, Pharma & Life Sciences, and Insurance where compliance, data integrity, and operational resilience are non-negotiable. [... view Binariks profile ]- Location
- Torrance, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 14 Projects Listed
Accelerating Progress Through Technology
We can extend your team, expand your products and innovate your current technology. [... view ArkusNexus profile ]- Location
- San Diego, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 2 Projects Listed
Achieving the Unachievable.
We create and manage the world's most iconic brands. Brand and product agency that delivers heroic work and legendary clients. DECOSTA has worked with clients in a wide range of industries including entertainment, consumer goods, technology, energy, finance, and more. [... view DECOSTA Global profile ]- Location
- Burbank, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $300/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 6 Projects Listed
GLOBAL TECH PARTNER FOR DIGITAL TRANSFORMATION AND SOFTWARE INNOVATION
Jelvix is a global tech partner with 15+ years of experience, empowering industry leaders and startups. With 450+ IT experts, we drive digital transformation across Europe, North America, Nordics, and Southeast Asia. [... view Jelvix profile ]- Location
- Los Angeles, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $70/hr
- Portfolios Count
- 10 Projects Listed
Trusted Software Partner For Global Businesses
Enterprise Software Development and Maintenance Services Provider [... view MLTech Soft profile ]- 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
Delivering Technology Solutions.
Since its inception in 1999, Drish Infotech has been a pioneer in delivering cutting-edge technology solutions globally. Headquartered in Silicon Valley with an additional office in Saratoga, CA, and a proficient backend development team in Chandigarh, India, Drish has firmly established itself as a prominent [... view Drish Infotech profile ]- Location
- Saratoga, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 10 Projects Listed
Driven Companies Towards Their Digital Transformation
We are a company specialized in software development for mobile platforms, portals and electronic commerce since 1991. [... view MSP Mobility Corp. profile ]- Location
- Concord, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $24/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 1 Project Listed
A WooCommerce Development Agency
CoSpark, a leading WooCommerce development agency with 15+ years of experience, specializes in crafting exceptional eCommerce solutions, generating over $300 million in annual revenue for clients. Renowned for full-stack development, customizations, and ongoing maintenance. [... view CoSpark profile ]- Location
- Irvine, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $200/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 5 Projects Listed
We're creators, marketers, and storytellers with a passion to bringing sustainable ideas to life.
GreenMarketing.ca is a leading web agency specializing in web design and development, with a focus on creating custom WordPress plugins & websites, as well as WooCommerce and Shopify stores. With over 10 years of experience, founder Nathan Ergang ensures top-tier service in WordPress speed optimization and [... view Green Marketing profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 2 Projects Listed
We Build Games That Players Love.
Double Coconut is a San Franciscobased boutique game development studio founded in 2012. The agency specializes in full-service game design and co-developmentfrom casual mobile and web titles to casino, mid-core, and Web3 games. Their projects have reached over 5 million players and generated [... view Double Coconut profile ]- Location
- San Francisco, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 8 Projects Listed
Your Software Development Partner Where AI Innovation Meets Engineering Excellence
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. [... view Radixweb profile ]- Location
- Artesia, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $25/hr
- Portfolios Count
- 24 Projects Listed
QualiMatrix Technologies: Always believe in Quality. We are ISO certified - 9001, 27001
One of the top Cyber Security providers, Web Development Services, App Development Services, UI/UX Services, and Software Testing Services [... see all Qualimatrix Technologies Pvt Ltd reviews ]- Location
- Bakersfield, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $13/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
Leading AI-Powered Software Development Agency.
Zignuts Technolab is a top-rated Web and On-demand Mobile App development company in the USA, Germany, and India. We strive to excel in the invention and development of the industry’s most advanced technologies. We will help you to make your digital dreams in on your hand. [... see all Zignuts Technolab reviews ]- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Portfolios Count
- 1 Project Listed
Technology Solutions for You.
Access information technology professionals with experience of working with startups to Fortune 500 companies without breaking the bank. Our services are well suited for retail, manufacturing, startups and healthcare businesses. Talk to us for a free consultation. [... view Femtomax Inc. profile ]- Location
- San Jose, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 3 Projects Listed
Your spark, our fuel
Dreamers is a research, data science, and tech consultancy that specializes in building solutions for complex problems. We are based in sunny California, but we work remotely with clients from all over the world. We're engineer-owned and operated, meaning you'll get personal attention and quick answers [... view Dreamers Inc. profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 8 Projects Listed
Building Benefits Through Software Solutions
NEKLO LLC is a software development company specializing in custom solutions for the healthcare, ecommerce, fintech, construction, and energy industries. We combine domain knowledge with engineering expertise to build scalable, secure, and reliable web and mobile applications. [... view NEKLO profile ]- Location
- Burlingame, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 6 Projects Listed
Custom Software That Works in the Real World
SoftDoes builds custom software, AI, and web applications for mid-market companies that need enterprise-grade results without the overhead of an in-house team. U.S.-based leadership. Full IP ownership. No lock-in. [... view Soft Does profile ]- Location
- San Francisco, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $75/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 1 Project Listed
Developing The Best Mobile Apps
Appingine is a top app development company in the U.S., known for turning bold ideas into powerful mobile experiences. We create award-winning apps that consistently earn recognition and visibility on the App Store and Google Play. Our team is dedicated to delivering high-quality, user-focused solutions that [... view Appingine profile ]- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 6 Projects Listed
We Build Next-Generation Applications for Small and Mid-Sized Companies.
Sunvera Software builds innovative and intelligent chatbot solution, mobile, and web applications to help small and mid-sized companies improve operational efficiency and customer satisfaction while reducing company costs. [... view Sunvera Software profile ]- Location
- Orange County, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $75/hr
- Minimal Budget
- $10,000 - $25,000
IT Solutions for your Business
Chiron LLC is the IT Consulting Company which focuses on the Web Development; Custom Web and Mobile Solutions built on OutSystems; Building Collaboration environments with Business Processes automation and integration of different application between each other. [... view Chiron LLC profile ]- Location
- Irvine, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $106/hr
- Minimal Budget
- $10,000 - $25,000
Digital Product and Innovation Company
We build digital tools that empower businesses, apps that leverage new-age technologies and design strategies that help you in your journey. Were flexible - We can help you ideate, build and launch or we can jump right in the middle to assist you. [... view Inspeero Technologies profile ]- Location
- San Francisco, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $1,000 - $10,000
Lets Partner To Unlock the Full Potential of AI for Your Business.
Apexon is a digital-first technology services company with over 5,500 certified digital engineers globally. The firm specializes in digital experience, AI & analytics, cloud solutions, DevOps, UX, application modernisation, and quality engineering. It partners with enterprises across industries including [... view Apexon profile ]- Location
- Santa Clara, California
- Number of Employees
- 1000 & Up
AI Power Agency and Development Shop.
Easiio build AI tools called ChatAI. We help our customers with these tools and implemented Large Language Model base AI technologies for their website or business software. Helping our customers do more with less and improve their efficiency. Our rate is very competitive with the help of AI and quality of [... view Easiio profile ]- Location
- Santa Clara, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
Experts in iGaming Software Solutions
GammaStack is a leading iGaming solutions provider with 14+ years of experience, offering sports betting software, white label & turnkey platforms, sweepstakes casinos, and casino game development including slots and provably fair games. Backed by 500+ experts with ISO 9001 & 27001 certifications. [... view GammaStack profile ]- Location
- Los Angeles, California
- Number of Employees
- 250 - 499
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 5 Projects Listed
Award-Winning Mobile Design & Development Agency with AI Expertise
Utility is a premier digital product agency specializing in custom mobile apps, web platforms, and AI-powered solutions for forward-thinking startups and global brands including Airbnb, Coca-Cola, Samsung, the NBA, and Forbes. [... view Utility profile ]- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $149/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 1 Project Listed
Think Digital
B3NET Inc. stands as a leading web design company, offering personalized website solutions, digital marketing, app development, and AI integration services to small and mid-sized businesses in Dallas, Texas. With roots dating back to 1999, our skilled team is committed to providing responsive website design [... view B3NET Inc profile ]- Location
- Santa Ana, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
Where Creativity Meets Excellence
USA Design Expert delivers creative, high-quality design solutions from logos to websites that help your brand stand out. [... view USA Design Expert profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 1 Project Listed
High-Level Technology for Small and Large Business.
ALFTEK offers full-service network infrastructure, system administration, network security, software development and other managed IT services. What's more, the company also integrates robust software solutions with cloud-based SaaS, PaaS and IaaS platforms for website and social & blog design. [... view ALFATEK profile ]- Location
- Concord, California
- Number of Employees
- Under 49
- Portfolios Count
- 4 Projects Listed
Innovative Web & Custom Soft Development Solutions
DESIGN, DEVELOP, DEPLOY!!! The PRIME is a team of highly skilled and experienced professionals in the field of Web Development and Custom Software Development PRIME means - Punctuality, Quickness, Honesty and Professional work! WE HAVE GOT YOU COVERED!!! [... view PRIME IT profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
We Design Develop Host & Maintain Your Online Presence
XWebAgency, Your trusted web agency. We offer website design, web development, SEO services, digital marketing, and e-commerce solutions to help your business grow online. [... view XWEBAGENCY profile ]- Location
- Desert Hot Springs, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $55/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 4 Projects Listed
Web Design and Mobile App Development Company
Carmatec is an enterprise IT solutions provider with over 20+ years of proven industry experience and has successfully carved out a niche in web development, software and application design and development apart from its expertise in mobile development, managed IT services & cloud solutions. [... view Carmatec profile ]- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 3 Projects Listed
Aiming to Achieve Your Business Goals Through Technology
Code Genesis is a full-stack development company dedicated to building scalable and secure digital platforms. We combine expertise in cloud, automation, and modern software engineering to create solutions that are both innovative and reliable. Our mission is to deliver technology that not only meets todays [... view Code Genesis profile ]- Location
- Santa Clara, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 7 Projects Listed
Deploy Dream Applications From Scratch
Our team of over 200 IT experts and engineers harness the power of contemporary technologies, advanced frameworks, and innovative methodologies to deliver unmatched and top-notch outsourced services from India. [... view ThinkSys profile ]- Location
- Sunnyvale, California
- Number of Employees
- 100 - 249
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 4 Projects Listed
Software Engineering That Creates Value
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. [... view IT-Dimension profile ]- Location
- West Hollywood, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $49/hr
- Portfolios Count
- 4 Projects Listed
Your Ultimate Partner in Poker Game Evolution.
Creatiosoft is a leading poker game development company specializing in creating immersive, innovative, and scalable poker solutions. Since 2012, weve delivered world-class gaming experiences powered by cutting-edge technology, including blockchain and AI integration. With a global client base spanning the [... view Creatiosoft Solutions Private Limited profile ]- Location
- Mountain View, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 1 Project Listed
Health Tech and Managed IT Services Company
TechMatter is a leading global provider of technology and healthcare solutions headquartered in Glendale, California. The company specializes in enterprise software development, automation, and revenue cycle management, empowering organizations to streamline operations and achieve sustainable growth. With a [... view TechMatter profile ]- Location
- Glendale, California
- Number of Employees
- 500 - 999
- Average Hourly Rate
- $100/hr
Translating 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. [... view Kritikal Solution profile ]- 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
Big Ideas Start with SunerGarcia.
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 [... view SunerGarcia profile ]- Location
- San Diego, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $1,000 - $10,000
Engineering Intelligent & Scalable Solutions.
VentureDive is an award-winning custom software development company dedicated to spearheading digital transformations for Fortune 500 companies across BFSI, CPG/retail, healthcare, transportation, logistics, and QSR industries through its expertise in the realms of Fintech, Data & AI, HealthTech, PropTech [... view VentureDive profile ]- Location
- Mountain View, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
SEO, Content Marketing, Web Design and Social Media Management
Let us be your digital partner and guide your business to online success. We offer a comprehensive suite of services, including web design, SEO, content writing, and social media management. We leverage our expertise and focus on LinkedIn to help you achieve your online goals. [... view Factwise Agency profile ]- Location
- Torrance, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 1 Project Listed
Best award-winning software development company in South Korea.
Time Tec South Korea is a top-rated, multi-award-winning software development company providing a full suite of services and solutions like mobile application development, software development, Microsoft Dynamics 365 development, web development, ServiceNow consulting, and cybersecurity consulting to small [... view In Time Tec South Korea profile ]- Location
- Roseville, California
- Number of Employees
- 1000 & Up
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
Experience-Driven Engineering to Digitally Transform Your Business To Stay Ahead.
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 [... view AeroQube profile ]- Location
- Pleasanton, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
Navigating the IT Future With Clarity of Thought
At HyScaler, we're driven by a mission to be your trusted partner in achieving transformative business objectives. Our global vision focuses on harnessing cutting-edge technologies to craft sustainable, intelligent, and secure solutions. [... view HyScaler profile ]- Location
- Santa Clara, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 2 Projects Listed
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About The Author and Expert Reviewer
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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