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.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.
Specializing in iOS, Android, and Flutter app development, Probey Services builds custom solutions that grow with businesses. Backed by 12+ years of experience and a team of 320+ specialists, it has delivered 1,800+ projects and served 120+ clients, including Waze and the Cleveland Clinic...
Top Services:
- Mobile App Development
- Software Development
- Web Development
- Web Design
- WordPress Website Design
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- Location
- Los Angeles, California
- Number of Employees
- 250 - 499
- Average Hourly Rate
- $10/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 94 Projects Listed
Empowering California Businesses with Bespoke Web Design and Development Services...
Top Services:
- Web Development
- eCommerce Development
- WordPress Website Design
- Mobile App Development
- Software Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $30/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 11 Projects Listed
ZERO NEGATIVE
VerifiedVerified by the DesignRush team for authenticity and credibility.Award WinnerRecipient of a Best Design Award for outstanding work.Boutique studio creating tailored web experiences.
Reach for the sky. We are Zero Negative. Your sidekick for big ideas. In a nutshell, Zero Negative is a small, boutique full-service design and development studio with a focus on creativity and close collaboration with clients. We make stuff - websites, web apps, interactive experiences, branding, and...
Top Services:
- Web Development
- Web Design
- WordPress Website Design
- Branding
- UI/UX Design
- Show more
- Location
- San Francisco, California
- Number of Employees
- Under 49
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 8 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsZERO NEGATIVE Services
Data sourced from the agency's DesignRush profileMercedes-Benz United Nations Development Programme KFC Vodafone Foundation GS1 Conad Curative Biotech
ZERO NEGATIVE Reviews & Testimonials
Web Development Review from Jaroslav Tyman Jr.
We contacted Zero Negative about a two stage renewal of our company website with a very aggressive timeline for the first stage. Zero Negative worked and guided us through pulling off the first stage within our timeline while also ensuring that the content and ideas for that stage were readily applicable to the full design. When we got to the full design, they were fully responsible for corralling the various preferences and ideas from our team into a well executed cohesive site. We're now in a good spot and look forward to continuing to work with Zero Negative as our business and needs grow.
Web Development Review from Susan E. Roberts
Zero Negative did an exceptional job designing my website, roberts-communications.com. From the start, they understood that this wasn't just about aesthetics it was about positioning, credibility, and clarity for a senior-level communications brand.They translated a complex, high-stakes business into a site that feels polished, modern, and authoritative without being flashy or over designed. The process was collaborative, efficient, and thoughtful, and they were responsive to feedback while also offering smart guidance when it mattered.The final result reflects exactly how I want Roberts Communications to be perceived: strategic, sophisticated, and trusted. I would highly recommend Zero Negative to anyone looking for a design partner who understands brand, not just web building.
Web Development Review from Anonymous
These guys are the best! We engaged with Zero Negative to develop a comprehensive web-based system for our factory that allows for managing orders, processes, and inventory. This initiative was essential for us to secure a big ticket client. We truly could not have accomplished this without their assistance. They dedicated considerable time to on-boarding and collecting the requisite information, followed by prototyping the software, and ultimately developing it from scratch. Overall, we are very satisfied.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWebby 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
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- Location
- Encinitas, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $200/hr
- Portfolios Count
- 17 Projects Listed
Mobikasa is a full-service global digital agency headquartered in Miami, 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...
Top Services:
- Web Development
- eCommerce Development
- Web Design
- Mobile App Development
- Digital Marketing
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- 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
End-to-end digital product design and engineering for enterprises and premium brands...
Top Services:
- Branding
- Mobile App Development
- Software Development
- AI Development
- Design Services
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 4 Projects Listed
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...
Top Services:
- eCommerce Development
- Web Development
- WordPress Website Design
- Web Design
- Mobile App Development
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- Location
- Sacramento, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Portfolios Count
- 19 Projects Listed
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
- Show more
- 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
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...
Top Services:
- Software Development
- Mobile App Development
- UI/UX Design
- Product Design
- Creative Services
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- Location
- Irvine, California
- Number of Employees
- Under 49
- Minimal Budget
- $50,000 & Up
- Portfolios Count
- 14 Projects Listed
Website Barrel stands as a distinguished professional website design company, providing cost-effective and tailor-made web development services executed by seasoned experts based in the USA. With a commitment to excellence, our team of skilled professionals utilizes their expertise to craft bespoke websites...
Top Services:
- Branding
- Logo Design
- Web Design
- Web Development
- Mobile App Development
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- Location
- Los Angeles, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 3 Projects Listed
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!!!...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- Web Design
- UI/UX Design
- Show more
- 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
Cubitrek is an AI-first marketing and engineering agency. We get brands discovered in Google and in AI answers through SEO, AEO, GEO, and automation...
Top Services:
- Digital Services
- Graphic Design
- eCommerce Development
- Web Design
- Web Development
- Show more
- Location
- Sacramento, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $1,000 - $10,000
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4.8
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