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

59 Companies - Rankings updated: August 22, 2026

All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.

HTML5
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  • Allusive Digital

    Proven Excellence Through Custom Web Design and Development Services.

    Allusive Digital is a creative and marketing agency that helps businesses grow through branding, web design, content development, and digital marketing. The agency blends thoughtful strategy with polished creative execution to help clients increase visibility, strengthen their identity, and connect with their...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Visit Website View Profile
    5.0 5.0 (5)

  • Mobile Application Developers

    Professional Mobile App Development Services

    Our expert, award-winning staff selects the products we cover and rigorously researches and tests our top picks. If you buy through our links, we may get a commission...

    Location
    Los Angeles, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $55/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile

  • DevTeam.Space

    AI-Powered Community of Expert Dev Teams

    DevTeam.Space is an AI-powered community of expert dev teams. Our mission is to help more businesses build great online products...

    Location
    Sunnyvale, California
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
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  • Carmatec

    Web Design and Mobile App Development Company

    Carmatec is an enterprise IT solutions provider with over 23+ 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...

    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
    Visit Website View Profile
    3.4 3.4 (109)

  • Persistent

    See Beyond, Rise Above.

    Persistent Systems, a renowned global leader in software product development and technology services. Delve into our innovative offerings to stay ahead in the ever-evolving landscape of technology...

    Location
    Santa Clara, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    Visit Website View Profile
    4.6 4.6 (730)

  • Lukasa

    Lukasa is a next-gen consulting partner helping organizations transform through data modernization,

    Custom Software that Actually Works the Way You Do...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
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  • Appther

    Transforms Digital Idea Into Reality

    Appther is a software and mobile app development company creating intelligent, scalable, and user-friendly digital solutions powered by innovation and AI...

    Location
    Signal Hill, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $22/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed
    Visit Website View Profile
    4.7 4.7 (23)

  • SoftGrid Computers

    Innovate, Create, Excel.

    SoftGrid Computers is a prominent custom software development company that excels in blending the latest technologies with well-organized creative work. With a strong focus on understanding client needs and delivering optimal solutions, we strive to be a reliable partner that offers great value for money. Our...

    Location
    Santa Monica, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
    Visit Website View Profile

  • NextOlive

    Grow with Technology.

    We have a Team of 100+ Skilled App Developers who thrive on rolling up their sleeves and solving your IT problems and meeting your business needs like APP Development, Software Development, Cloud Consulting, Generative AI Development, Cyber Security Services, Custom ERP Software Development, and Web...

    Location
    Irvine, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Visit Website View Profile

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