Top California HTML5 Mobile App Development Agencies

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

180 Companies-Rankings updated: August 22, 2026

DesignRush vets all agencies based on professional qualifications and verified customer feedback to help you choose confidently. Some featured agencies maintain paid sponsorships.

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Equality Software
Driving Change Through Technology
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...
Top Services:
Mobile App Development
Blockchain
VR/AR
eCommerce Development
IoT
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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
View Profile
5.0 5.0 (1)
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
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Location
Glendale, California
Number of Employees
500 - 999
Average Hourly Rate
$100/hr
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4.5 4.5 (40)
Naxtech
Honest, Practical, & Focused On Results
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...
Top Services:
Web Development
Digital Marketing
Mobile App Development
SEO
Content Marketing
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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
View Profile
Bay Area Coders
Strategy, design, engineering, and AI
Strategy, design, engineering, and AI
Bay Area Coders is a San Francisco-based product and engineering studio working with venture-backed startups and growth-stage companies since 2016. We combine strategy, design, engineering, and AI to help teams ship real products and modernize existing ones...
Top Services:
Software Development
Web Development
Mobile App Development
AI Development
Design Services
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Location
Roseville, California
Number of Employees
Under 49
Average Hourly Rate
$100/hr
Minimal Budget
$1,000 - $10,000
View Profile
Chiron LLC
IT Solutions for your Business
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...
Top Services:
Software Testing
Mobile App Development
Software Development
IT Services
Managed Services
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Location
Irvine, California
Number of Employees
Under 49
Average Hourly Rate
$106/hr
Minimal Budget
$10,000 - $25,000
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Idea Maker
You Think It, We'll Build It.
You Think It, We'll Build It.
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
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Location
Irvine, California
Number of Employees
Under 49
Average Hourly Rate
$125/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
10 Projects Listed
View Profile
4.8 4.8 (6)
5.0 5.0 (16)
devAtelier
Southern Californias Mobile App experts since 2009
Southern Californias Mobile App experts since 2009
We are San Diego's mobile-native and mobile-first consultancy. We specialize in Swift for iOS, Flutter for iOS/Android, and React for Web. We have led projects for Fortune 500 companies and startups. If you're looking for an easy-to-talk-to and experienced partner to build your app, call devAtelier!...
Top Services:
Mobile App Development
Software Development
IoT
Web Development
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Location
San Diego, California
Number of Employees
Under 49
Average Hourly Rate
$125/hr
Minimal Budget
$10,000 - $25,000
View Profile
Dogtown Media
A disruptive development company.
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...
Top Services:
Mobile App Development
AI Development
Wearables
Web Design
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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
View Profile
4.5 4.5 (2)
Utility
Award-Winning Mobile Design & Development Agency with AI Expertise
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...
Top Services:
Mobile App Development
Software Development
AI Development
UI/UX Design
Digital Services
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Location
Los Angeles, California
Number of Employees
100 - 249
Average Hourly Rate
$149/hr
Minimal Budget
$50,000 & Up
Portfolios Count
1 Project Listed
View Profile
4.6 4.6 (10)
Black Flag Creative
Web Design & Development Company Anchored in Los Angeles, CA
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...
Top Services:
Web Development
Web Design
Mobile App Development
Design Services
Product Design
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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
View Profile
5.0 5.0 (12)
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Nova Era Agency
Building the new era of digital growth
Building the new era of digital growth
Nova Era is a digital solutions agency built to merge creativity with innovation, offering web and app design, development, video production, automation, and customized AI tools. The focus is always on building smarter systems that help businesses work seamlessly and communicate with impact.What defines the...
Top Services:
Web Design
Web Development
eCommerce Development
UI/UX Design
Mobile App Development
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Location
San Francisco, California
Number of Employees
Under 49
Average Hourly Rate
$149/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
2 Projects Listed
View Profile
5.0 5.0 (19)
Ramotion
Design Agency Bridging Product & Brand
Design Agency Bridging Product & Brand
Ramotion is a San Francisco/Burlingame, California based digital product studio founded in 2009. The boutique agency blends brand strategy, UX/UI, web and mobile design, and front-end development to support startups through Fortune 500 companies. With a curated client roster and a team of ~70...
Top Services:
Web Design
Branding
UI/UX Design
Web Development
Mobile App Development
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Location
San Francisco, California
Number of Employees
50 - 99
Average Hourly Rate
$150/hr
Portfolios Count
18 Projects Listed
View Profile
4.9 4.9 (23)
5.0 5.0 (2)
Sunrise Integration
Keep Your Business Competitive in an App-Connected World.
Keep Your Business Competitive in an App-Connected World.
Expert website design and development - mobile application development - API integration: we do it all! Your online presence can't be left to just anyone. We are an agile-focused agency with a high client satisfaction rate. Whatever you need to build to scale your business - we'll help you build it the...
Top Services:
eCommerce Development
Web Development
Web Design
UI/UX Design
Mobile App Development
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Location
Pasadena, California
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
12 Projects Listed
View Profile
4.8 4.8 (12)
5.0 5.0 (9)
Top Notch Dezigns®
Web Design + Digital Marketing Agency | 20+ Years Experience
Web Design + Digital Marketing Agency | 20+ Years Experience
Top Notch Dezigns® is a full-service web design and digital marketing agency that specializes in custom websites tailored to meet diverse business requirements. With a focus on boosting brands, increasing conversions, and generating leads...
Top Services:
Web Design
Web Development
eCommerce Development
WordPress Website Design
Digital Marketing
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Location
Los Angeles, California
Number of Employees
50 - 99
Average Hourly Rate
$150/hr
Portfolios Count
12 Projects Listed
View Profile
4.5 4.5 (2)
5.0 5.0 (7)
Amasta Media
Your digital partner blending strategy, design, and technology to drive growth.
Your digital partner blending strategy, design, and technology to drive growth.
Whether you need strategy, consulting, hiring support, or a fresh website, we partner with you to build solutions that fit your goals, budget, and long-term growth...
Top Services:
Web Design
Digital Strategy
Business Consulting
UI/UX Design
Web Development
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Location
Dublin, California
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
8 Projects Listed
View Profile
4.3 4.3 (1)
Dreamers Inc.
Verified
Your spark, our fuel
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...
Top Services:
AI Development
Blockchain
Software Development
Mobile App Development
Wearables
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Location
Los Angeles, California
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$10,000 - $25,000
Portfolios Count
14 Projects Listed
View Profile
4.3 4.3 (1)
Endertech
Beautiful & Functional Digital Solutions That Deliver ROI
Beautiful & Functional Digital Solutions That Deliver ROI
Endertech (endertech.com, 310.400.0800) is a full-service web and software development company near Los Angeles since the year 2000 providing custom design, e-commerce, software development, and online marketing support. “If you can dream it; We can build it”...
Top Services:
Digital Services
Web Development
Web Design
eCommerce Development
Software Development
Show more
Location
Torrance, California
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$1,000 - $10,000
View Profile
4.6 4.6 (19)
Strive Enterprise
Lets Grow Online
Lets Grow Online
Strive Enterprise is the ultimate solution for impactful web design, custom digital marketing solutions, and professional SEO services...
Top Services:
Web Design
SEO
Digital Marketing
Web Development
WordPress Website Design
Show more
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
View Profile
5.0 5.0 (360)
SunerGarcia
Big Ideas Start with SunerGarcia.
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...
Top Services:
Web Design
Web Development
SEO
PPC
Software Development
Show more
Location
San Diego, California
Number of Employees
Under 49
Average Hourly Rate
$150/hr
Minimal Budget
$1,000 - $10,000
View Profile
Clay
Verified
Top UI/UX design, web design, and branding agency in San Francisco.
Top UI/UX design, web design, and branding agency in San Francisco.
Clay is a design and development agency whose mobile app work spans branding, UX, interaction design, and emerging tech, including AI, AR/VR, and Web3. In 16 years, its 78-person senior-led team has completed 529 projects for clients including Meta, Google, Stripe, Coinbase, Uber, and Sony...
Top Services:
UI/UX Design
Mobile App Development
Web Development
Branding
Web Design
Show more
Location
San Francisco, California
Number of Employees
50 - 99
Average Hourly Rate
$175/hr
Portfolios Count
12 Projects Listed
View Profile
4.9 4.9 (37)
4.8 4.8 (21)
Pastilla
For People. For Progress.
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...
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
View Profile
5.0 5.0 (3)
badpixel
Let's Build Tomorrow Together.
Let's Build Tomorrow Together.
We are a brand and software development agency specializing in building eCommerce, iOS, and feature-rich websites and apps that move your business forward...
Top Services:
Product Design
eCommerce Development
Web Development
UI/UX Design
Web Design
Show more
Location
Los Angeles, California
Number of Employees
Under 49
Average Hourly Rate
$185/hr
Minimal Budget
$10,000 - $25,000
View Profile
5.0 5.0 (12)
metajive
Metajive helps brands grow through design, technology & modern marketing.
Metajive helps brands grow through design, technology & modern marketing.
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
Show more
Location
Encinitas, California
Number of Employees
Under 49
Average Hourly Rate
$200/hr
Portfolios Count
17 Projects Listed
View Profile
4.8 4.8 (5)
Signature Creative
Designing Digital Innovation, Delivering Impact
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...
Top Services:
Branding
Graphic Design
Social Media Marketing
Creative Services
Design Services
Show more
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
View Profile
5.0 5.0 (6)
CoSpark
A WooCommerce Development Agency
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...
Top Services:
eCommerce Development
Web Development
WordPress Website Design
Software Development
Web Design
Show more
Location
Irvine, California
Number of Employees
Under 49
Average Hourly Rate
$200/hr
Minimal Budget
$1,000 - $10,000
Portfolios Count
5 Projects Listed
View Profile
5.0 5.0 (29)
Fishermen Labs
Top Augmented Reality & Virtual Reality Agency
Top Augmented Reality & Virtual Reality Agency
An Immersive Media Agency specializing in the development of Extended Reality (XR, AR, VR, MR) experiences driving meaningful connections between brands & consumers. Our global team of skilled designers, artists, and developers craft creative narratives & experiences powered by emerging tech...
Top Services:
VR/AR
Web Development
Mobile App Development
Product Design
Web Design
Show more
Location
Culver City, California
Number of Employees
Under 49
Average Hourly Rate
$200/hr
Minimal Budget
$10,000 - $25,000
View Profile
Born West Inc.
We Build Digital Products, Experiences, And Systems ‍that Matter.
We Build Digital Products, Experiences, And Systems ‍that Matter.
Born West is a creative tech agency. We turn ambitious ideas into working software from inception to launch. Our senior strategists, designers, and engineers work as one team to shape digital products, AI-powered tools, platforms, and experiences that are thoughtful, scalable, and built to ship...
Top Services:
Product Design
Web Design
eCommerce Development
Web Development
WordPress Website Design
Show more
Location
Concord, California
Number of Employees
Under 49
Average Hourly Rate
$200/hr
View Profile
DECOSTA Global
Achieving the Unachievable.
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...
Top Services:
Digital Services
Branding
Creative Services
Product Design
Digital Strategy
Show more
Location
Burbank, California
Number of Employees
Under 49
Average Hourly Rate
$300/hr
Minimal Budget
$25,000 - $50,000
Portfolios Count
6 Projects Listed
View Profile
5.0 5.0 (1)
Internauts Design
Design Against Cognitive Friction
Design Against Cognitive Friction
Internauts is a Neurodigital design studio that helps organizations create brands and digital experiences built around how people actually think, feel, and make decisions. The studio combines branding, UX/UI design, accessibility, AI-aware experiences, and cognitive design principles to reduce friction and...
Top Services:
Branding
Logo Design
Product Design
Web Design
UI/UX Design
Show more
Location
San Francisco, California
Number of Employees
Under 49
Average Hourly Rate
$350/hr
Minimal Budget
$10,000 - $25,000
View Profile
Design Sketchers
Our Creative Portfolio Smarter Results Across the Web.
Our Creative Portfolio Smarter Results Across the Web.
Design Sketchers is a comprehensive digital marketing service provider, dedicated to transforming your vision of online presence into a remarkable reality. Our emphasis lies in cultivating robust customer engagement strategies, ensuring an impactful and immersive online experience for your audience...
Top Services:
Web Development
Graphic Design
Logo Design
Digital Marketing
Content Marketing
Show more
Location
Modesto, California
Number of Employees
50 - 99
Average Hourly Rate
$1000/hr
Minimal Budget
$50,000 & Up
Portfolios Count
2 Projects Listed
View Profile
1.0 1.0 (2)

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Best HTML5 Mobile App Development Agencies in California

Driving Change Through Technology

Health Tech and Managed IT Services Company

Honest, Practical, & Focused On Results

Strategy, design, engineering, and AI

IT Solutions for your Business

You Think It, We'll Build It.

Southern Californias Mobile App experts since 2009

A disruptive development company.

Award-Winning Mobile Design & Development Agency with AI Expertise

Web Design & Development Company Anchored in Los Angeles, CA

Building the new era of digital growth

Design Agency Bridging Product & Brand

Keep Your Business Competitive in an App-Connected World.

Web Design + Digital Marketing Agency | 20+ Years Experience

Your digital partner blending strategy, design, and technology to drive growth.

Your spark, our fuel

Beautiful & Functional Digital Solutions That Deliver ROI

Lets Grow Online

Big Ideas Start with SunerGarcia.

Top UI/UX design, web design, and branding agency in San Francisco.

For People. For Progress.

Let's Build Tomorrow Together.

Metajive helps brands grow through design, technology & modern marketing.

Designing Digital Innovation, Delivering Impact

A WooCommerce Development Agency

Top Augmented Reality & Virtual Reality Agency

We Build Digital Products, Experiences, And Systems ‍that Matter.

Achieving the Unachievable.

Design Against Cognitive Friction

Our Creative Portfolio Smarter Results Across the Web.

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Popular Services

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