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

212 Companies - Rankings updated: August 22, 2026

Every agency featured on DesignRush is vetted for expertise and client satisfaction to support your decision-making. Some listings may be sponsored.

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  • Zazmic

    Lightning-Fast AI, Cloud & Cybersecurity Solutions

    Lightning-Fast AI, Cloud & Cybersecurity Solutions

    Zazmic has been at the forefront of AI/ML and software development innovation for over a decade. Today, we continue to lead the charge as the Google Cloud Premier partner and a top provider of Gen AI, cybersecurity, and cloud services. Design, architecture, top-tier engineering we have it all...

    Top Services:

    • AI Development
    • Mobile App Development
    • UI/UX Design
    • Cloud Consulting
    • Web Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    1 Project Listed
    View Profile
    3.7 3.7 (6)

  • Savvycom

    Your AI-Driven Software Development Partner

    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...

    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
    View Profile
    4.7 4.7 (29)

  • Luvina Software

    Precision Discipline Delivery

    Precision Discipline Delivery

    Luvina is a well-known software outsourcing business that specializes in providing clients all around the world with excellent IT solutions. With a dedicated team of more than 750 experts, Luvina provides comprehensive software development services that are customized to each client's specific needs. Luvina...

    Top Services:

    • ERP Consulting
    • CRM Consulting
    • Software Development
    • eCommerce Development
    • Staff Augmentation
    • Show more
    Location
    San Jose, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $25/hr
    View Profile
    4.7 4.7 (61)

  • TechMatter

    Health Tech and Managed IT Services Company

    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...

    Top Services:

    • Digital Services
    • Design Services
    • UI/UX Design
    • Web Development
    • Affiliate Marketing
    • Show more
    Location
    Glendale, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $100/hr
    View Profile
    4.5 4.5 (40)

  • BairesDev

    Software Outsourcing & Development | 500+ Active Clients

    Software Outsourcing & Development | 500+ Active Clients

    Founded in 2009 by Nacho de Marco and Paul Azorín, BairesDev provides top 1% tech talent to a range of clients, from startups to Fortune 500 companies...

    Top Services:

    • Software Development
    • Web Development
    • UI/UX Design
    • Mobile App Development
    • Software Testing
    • Show more
    Location
    San Francisco, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    5 Projects Listed
    View Profile
    4.8 4.8 (8)
    3.9 3.9 (32)

  • Vention

    Verified Verified by the DesignRush team for authenticity and credibility.
    Engineering peace of mind

    Engineering peace of mind

    At Vention, unparalleled customer care isnt just a promise its our mission. We blend personalized experience, unwavering attention to detail, and a genuine passion for your business, ensuring that every aspect of our collaboration is tailored to your success...

    Top Services:

    • Software Development
    • Staff Augmentation
    • Mobile App Development
    • Software Testing
    • Web Development
    • Show more
    Location
    San Francisco, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    15 Projects Listed
    View Profile
    4.6 4.6 (6)
    4.9 4.9 (18)

  • Grazitti Interactive

    Marketing For Digital Natives

    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...

    Top Services:

    • Graphic Design
    • Video Production
    • Web Design
    • Web Development
    • Digital Marketing
    • Show more
    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
    View Profile
    4.8 4.8 (5)
    4.3 4.3 (387)

  • Exadel

    Advance Your Business Through Technology.

    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...

    Top Services:

    • Software Development
    • AI Development
    • IT Services
    • Big Data Analytics
    • Business Consulting
    • Show more
    Location
    Walnut Creek, California
    Number of Employees
    1000 & Up
    Portfolios Count
    6 Projects Listed
    View Profile
    4.2 4.2 (5)

  • Apexon

    Lets Partner To Unlock the Full Potential of AI for Your Business.

    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...

    Top Services:

    • Mobile App Development
    • Big Data Analytics
    Location
    Santa Clara, California
    Number of Employees
    1000 & Up
    View Profile
    4.8 4.8 (13)

  • Avanade

    Look forward to a sustainable future with us!

    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...

    Top Services:

    • CRM Consulting
    • DevOps Consulting
    • Mobile App Development
    • Cloud Consulting
    • Show more
    Location
    El Segundo, California
    Number of Employees
    1000 & Up
    Portfolios Count
    3 Projects Listed
    View Profile
    3.8 3.8 (10)

  • Persistent

    See Beyond, Rise Above.

    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...

    Top Services:

    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
    • Show more
    Location
    Santa Clara, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    View Profile
    4.6 4.6 (730)

  • In Time Tec South Korea

    Best award-winning software development company in South Korea.

    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...

    Top Services:

    • Software Development
    • Mobile App Development
    • Cybersecurity
    • AI Development
    • Show more
    Location
    Roseville, California
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile

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