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
DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.
Software, mobile and SaaS application development since 2004.
We are located in beautiful Phoenix, Arizona, and we can meet you in person anywhere in Arizona or Southern California. We have clients coast to coast and we have a long and proud history as a technology advocate for small business. To learn more, call us at 623-845-2747 or visit datatitan.com. [... see all Data Titan reviews ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $1,000 - $10,000
Transforming Enterprises with AI Applications
ThirdEye Data Transforms Enterprises with Data & AI Solutions & Services. ThirdEye Data leverages Artificial Intelligence & Data technologies to build AI applications for enterprises worldwide. [... see all ThirdEye Data reviews ]- 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
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. [... see all Altoros Labs reviews ]- Location
- Pleasanton, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 12 Projects Listed
Driven by Innovation
The best eCommerce development company empowering you with the tools you need to conquer your industry. [... see all Folio3 reviews ]- Location
- Pleasanton, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 11 Projects Listed
Envision Leverage Infinite
A global technology outsourcing and custom Development Company with expertise into diverse Web Development, Custom Software and Mobile Applications. [... see all Cmarix reviews ]- Location
- Temecula, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 38 Projects Listed
Hire World-Class Developers.
Outsource Your Software Development Services to DreamzTech, the 10 Yrs.+ Exp. Award-Winning Software Design & Development Company based in USA, UK, India & South Africa. Hire World-Class Offshore Developers at $20/HR trusted by Startups, SMBs to Fortune 500 Brands. Get a 15 Days Free Trial! [... see all DreamzTech Solutions reviews ]- Location
- San Francisco, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 8 Projects Listed
A highly recommended mobile app development company
Blue Label Labs is a premier digital product agency, providing a comprehensive array of services to transform businesses in the digital realm. With a strong global presence, we specialize in mobile app development, especially iPhone app development, publishing app development, web design, and product [... view BlueLabel profile ]- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 22 Projects Listed
Delivering Value Digitally
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. [... view Ayatas Technologies profile ]- Location
- Sacramento, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Portfolios Count
- 19 Projects Listed
Research, Design and Build
Lollypop Design is a global UX UI and Interactive Design Company on a mission to empower and touch a billion lives across the world through world-class digital experiences. [... view Lollypop Design Studio profile ]- Location
- San Jose, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 53 Projects Listed
Enterprise Grade App & Web Development Services
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 [... see all RichestSoft reviews ]- Location
- San Jose, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 9 Projects Listed
Our Success - Its Your Business Success
RiseServ provides unique and custom software solutions as web-applications, mobile applications, web-portals for medium and small businesses in US, Canada and Europe. Se stand with US small businesses of all industries, helping them recover from the pandemic and rise their sales to levels higher than ever. [... see all RiseServ reviews ]- Location
- Newport Beach, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
Your strategic partners in data-driven, user-inspired, & future-ready digital innovations.
Tentackles is a premier UI/UX design agency, serving global clients since 2018. We specialize in innovative and user-centric digital solutions that captivate audiences and drive conversions. Our expert team crafts visually engaging and seamless user experiences. Need top-tier design? Connect with us [... see all Tentackles reviews ]- Location
- Walnut, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $20/hr
- Portfolios Count
- 16 Projects Listed
Curl Ware, your one-stop shop for all your web development and design needs.
Our team of experts focuses on delivering top-quality services to our clients, ensuring that they receive the best results. We aim to help businesses and individuals build their online presence through effective website development, optimization, and design. Our mission is to exceed our client's expectations [... view Curlware profile ]- Location
- California City, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $20/hr
- Portfolios Count
- 20 Projects Listed
A disruptive development company.
Providing Chatbot, Development, and website/app solutions. If you can dream it, we can build it. Intelligent apps require brilliant design and intuitive product strategy. We analyze and design every aspect of your project to ensure that its engaging, stylish, and easy to use. [... see all Dogtown Media reviews ]- Location
- San Diego, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $140/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 11 Projects Listed
Mobile App Development Agency
M TECHUB LLC Leading Mobile App Development & Staff Augmentation Company in the USA [... see all M TECHUB LLC reviews ]- Location
- Mountain View, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $45/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 20 Projects Listed
Innovation Amplified: Offshore Software Solutions Redefined.
Mangosoft is a top offshore software agency, offering web, mobile app, and enterprise development services. With a strong track record and a global presence, we have successfully delivered 250+ projects across 30+ countries. Our tailored teams of niche experts ensure optimal results, while our transparent [... see all Mangosoft reviews ]- Location
- Santa Monica, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 18 Projects Listed
Grow Your Store With AI-Driven eCommerce Solutions.
Elsner is your one-stop shop for cutting-edge eCommerce & mobile app development. We craft AI-driven eCommerce solutions that take your business to the next level. From sleek mobile apps to powerful eCommerce platforms, Elsner builds the future of software. [... see all ElsnerTechnologies reviews ]- Location
- Fremont, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $30/hr
- Portfolios Count
- 16 Projects Listed
Lets Grow Online
Strive Enterprise is the ultimate solution for impactful web design, custom digital marketing solutions, and professional SEO services. [... view Strive Enterprise profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 10 Projects Listed
Invested in Your Success
Tepia is a software company founded in 2012 with over 30 years of experience in web and mobile app development. We are a passionate and agile team of developers, designers, and strategists who are consistently pushing the boundaries of technology. [... see all Tepia reviews ]- Location
- Costa Mesa, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 2 Projects Listed
Innovative design and development
Mobikasa is a full-service global digital agency headquartered in New York, delivering high-performance web, mobile, and e-commerce solutions since 2011. We help brands scale through custom apps, scalable storefronts, and data-driven marketing, blending strategy, design, and technology. [... see all Mobikasa reviews ]- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 13 Projects Listed
Carefully devised digital products that strengthen your brand
Full cycle UX/UI design and development studio that crafts comprehensive digital experiences for the real users [... see all UVIO reviews ]- Location
- San Diego, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 1 Project Listed
Leading Web and Mobile App Development Company in India, USA, & AUS
Techcronus Business Solutions is a global provider of enterprise business solutions and modern-day technology services. [... see all Techcronus Business Solutions Pvt. Ltd. reviews ]- Location
- Los Angeles, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Portfolios Count
- 14 Projects Listed
A Top-Class Google App Engine Development Company!
Etelligens is an industry-leading custom software and Google app engine development company known for its reliable mobile and web development that delivers innovative solutions. [... see all Etelligens Technologies reviews ]- Location
- Torrance, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 7 Projects Listed
Empowering Startups & Enterprises With AI To Deliver Intelligent Business Solutions
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. [... see all Logicspice reviews ]- Location
- Beverly Hills, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $21/hr
- Portfolios Count
- 8 Projects Listed
Advance Your Business Through Technology.
Exadel is a leading global consulting and engineering company that delivers technology transformation to help customers become digital leaders in their industries. [... view Exadel profile ]- Location
- Walnut Creek, California
- Number of Employees
- 1000 & Up
- Portfolios Count
- 6 Projects Listed
Scalable Intelligence
ScalaCode helps ISVs and enterprises build AI-powered products with vetted remote developers from India. From LLM apps and MLOps to full-stack delivery, our PODs ship fast, securely, and cost-effectively for US/EU time zonesunder strict NDAs and SLA-driven execution. [... see all ScalaCode Global Pvt. Ltd. reviews ]- Location
- San Jose, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $15/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 2 Projects Listed
Automate Innovate Dominate.
HashStudioz Technologies is an award-winning product development company providing innovative IT solutions to clients from startups to Fortune 500 firms. With a team of over 1,000 experts, they have successfully completed 200+ projects, offering advanced technologies such as IoT, Blockchain, Cloud Computing [... see all HashStudioz Technologies reviews ]- Location
- Altadena, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 4 Projects Listed
Your imagination, Amplified. Digitally.
We help ambitious brands leverage video, ad & brand films, branding, UI/UX design, and full-service creative solutions to achieve rapid growth seamless experiences, intuitive results. [... see all Smoking Chimney reviews ]- Location
- San Francisco, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 5 Projects Listed
Apps Solution For Every Nation.
APPSNATION 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. [... see all AppsNation reviews ]- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 7 Projects Listed
Supercharge your roadmap with custom AI solutions
We specialize in AI-driven product development for regulated industries like healthcare, fintech, biotech, and cybersecurity. Our AI-first approach ensures precision, security, and compliance with standards like HIPAA and GDPR. With a global team, we deliver scalable, data-driven solutions that continuously [... see all GlobalNodes AI reviews ]- Location
- Los Angeles, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 4 Projects Listed
We Build Innovative Technology.
Applications and platforms proudly built here in the USA. We have assisted some of the most prominent global brands operating in complex and heavily regulated sectors in successfully launching software solutions that underpin their go-to-market strategy, ensuring a world-class customer experience. [... view Kingsmen Digital Ventures profile ]- Location
- Irvine, California
- Number of Employees
- Under 49
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 14 Projects Listed
Extend Your Software Team. Scale Your Software Solutions.
Integrant, Inc is a custom software development company headquartered in San Diego, CA. We focus on providing tailor-made software solutions, processes, and results to fit your needs to a tee. We strive to uncover the heart of your challenges and identify how our team can seamlessly integrate with you and [... view Integrant profile ]- Location
- San Diego, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Portfolios Count
- 7 Projects Listed
Decoding Innovation
MoogleLabs leverage AI/ML, Blockchain, DevOps,Low Code/No Code platforms, AI Testing and Data Science to come up with the best solutions for diverse businesses. [... see all MoogleLabs reviews ]- Location
- Emeryville, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
Your Software Development Team As-a-Service
Materialize is a team of passionate web and mobile app artisans that specialize in building bespoke digital products. [... view Materialize Labs profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 12 Projects Listed
Your 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 [... view Savvycom profile ]- 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
Premium software consultancy: Scaleups & Enterprises
Premium software consultancy: Scaleups & Enterprises.Blockchain | DeFi | Biotech | FinTech | EduTech | HealthTech. From stunning product design to flawless code. We help you win! [... view 10Clouds profile ]- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $70/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 11 Projects Listed
For People. For Progress.
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. [... view Pastilla profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $185/hr
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 10 Projects Listed
Upsource Your Custom Software Development.
CodeStringers is an uncommon software development firm that brings innovation, craftsmanship, and integrity to the development of best-in-class cloud, web and mobile software products. We provide end-to-end product strategy, release planning, software development and quality assurance solutions. [... see all CodeStringers reviews ]- Location
- Santa Cruz, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $55/hr
- Minimal Budget
- $50,000 & Up
Asia's One-Stop Destination for Tech Excellence
Asia's One-Stop Destination for Tech Excellence [... view TechHub profile ]- Location
- Irvine, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 16 Projects Listed
Accelerate Your Digital Transformation
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 [... see all NetSet Software Solutions reviews ]- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 3 Projects Listed
Custom Software Development
Coreteka is an IT services provider with R&D offices in Eastern Europe and 8 years of experience in custom software development. We have offices in Irvine (the USA), Wroclaw (Poland), and Kyiv (Ukraine). [... view CoreTeka profile ]- Location
- Irvine, California
- Number of Employees
- Under 49
- Portfolios Count
- 13 Projects Listed
Marketing for Digital Natives
Grazitti Interactive, a global leader in digital innovation, offering AI-driven solutions to drive customer success. We specialize in Salesforce, marketing automation, analytics, and more, partnering with industry giants to deliver results-oriented solutions for clients. [... see all Grazitti Interactive reviews ]- Location
- Mountain View, California
- Number of Employees
- 1000 & Up
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 11 Projects Listed
Designing Digital Innovation, Delivering Impact
Signature Creative is a Los Angeles based digital product and design agency founded in 2004. With a lean, senior-led team, they specialize in transforming brands through a combination of award-winning branding, UX/UI, creative technology, and full-stack development. The firm partners with Fortune 500s [... view Signature Creative profile ]- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $200/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 12 Projects Listed
An Enterprise AI Development Company
Azilen Technologies is a prominent enterprise AI development company that takes pride in delivering exceptional AI, Data, and HRTech solutions to organizations seeking digital transformation. [... view Azilen Technologies profile ]- Location
- San Francisco, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $35/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 16 Projects Listed
Top Mobile App and Web Development Company
Developer Bazaar Technologies is a Top Ranked Mobile App & Custom Software Development Company, specializing in transforming ideas into stunning realities and Creating a Positive Impact and is Headquartered in Indore, India. [... see all Developer Bazaar Technologies reviews ]- Location
- Fremont, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 6 Projects Listed
Custom Enterprise Software Development Company in USA
Custom Software Development and IT Consulting Company [... view Tekki Web Solutions Inc profile ]- Location
- San Jose, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 6 Projects Listed
Guaranteeing a 5 star experience!
Innofied is an award-winning B2B AI software development company with 600+ successful projects since 2012, helping businessesincluding Fortune 500 companieswith modern AI and SaaS solutions. With a global presence, our game-changing automated solutions continue to drive success across industries. [... see all Innofied Solution reviews ]- Location
- Sunnyvale, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 20 Projects Listed
AI | Gen-AI | Blockchain | IT Staff Augmentation | Mobile App
Quytech is a leader in digital innovation of global startups, SMEs, and Fortune 500 organizations. With 14+ years of experience and strong technology expertise, we deliver digital-first experiences that help businesses stay competitive.View the Quytech Reviews, Portfolio, and Services [... see all Quytech reviews ]- Location
- Walnut, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $20/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 12 Projects Listed
Innovating Healthcare Through Technology
Orangesoft is a full-cycle software development partner focused on healthcare. [... view Orangesoft profile ]- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 11 Projects Listed
Global Dev Team With Affordable Trusted Solutions
Hikesiya is Silicon Valley-based software development company providing software solutions with a global team of Japan and Vietnam. Our team is a combination of skillful, enthusiastic engineers from Vietnam where the software industry is raidly growing and Japan where quality is meticulously managed in a [... view Hikesiya USA profile ]- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 5 Projects Listed
Related Services in California
Related Mobile App Development Specializations in California
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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