Our expert analysts researched and ranked the leading California iPhone app development companies that build customer-centric applications that engage and convert users into paying customers. Use our practical tool to filter listings by budget, size and reviews and select the best partner for your business needs.
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.
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

Clay
VerifiedVerified by the DesignRush team for authenticity and credibility.AI LeaderRecognized for strong visibility across AI-powered search and answer engines.+1Award WinnerRecipient of a Best Design Award for outstanding work.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
- 13 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsClay Services
Data sourced from the agency's DesignRush profileMeta Google Discover Stripe Coca-Cola Coinbase Uber Sony Slack Amazon
Clay Reviews & Testimonials
Web Development Review from Anonymous
Clay built our new website to support a product launch, and we were impressed by how quickly they delivered. The site met our expectations perfectly. They worked efficiently and provided high-quality results right on schedule.
Web Design Review from Anonymous
Clay designed and developed our car retail website, and the results were outstanding. The site looked stunning and worked exactly as needed. They stood out for their patience, attentiveness, and excellent service. Communication was always clear, and they delivered on time.
Web Design Review from Anonymous
Clay redesigned and rebuilt our nonprofit’s website with fresh UX/UI research to guide the process. The new site improved conversions, earned great user feedback, and boosted internal efficiency. Communication across all channels was seamless, and their responsiveness and high-quality results went beyond what we expected.
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsWe provide a complete portfolio of lifestyle content to the needs of our readers in print + digital. Content is also easily accessible on desktop and mobile devices...
Top Services:
- Digital Services
- Public Relations
- Creative Services
- Reputation Management
- Digital Strategy
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $175/hr
- Minimal Budget
- Under $1,000
We are trusted by businesses of all sizes to design and develop their digital products...
Top Services:
- UI/UX Design
- Digital Marketing
- Mobile App Development
- IoT
- Show more
- Location
- San Francisco, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $149/hr
- Minimal Budget
- $50,000 & Up
Since 2003 we have developed bespoke websites and mobile apps for industry, government, and non-profits. From the beginning, our philosophy has been that everything we build must combine compelling design with high usability and robust security...
Top Services:
- Web Development
- Mobile App Development
- AI Development
- Location
- Pasadena, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $75/hr
- Minimal Budget
- $1,000 - $10,000
We provide excellent solution with modern and trendy design for Website and Mobile app. Give a touch of modern solution to your business...
Top Services:
- Web Design
- Web Development
- UI/UX Design
- WordPress Website Design
- eCommerce Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $60/hr
- Minimal Budget
- $1,000 - $10,000
- Portfolios Count
- 1 Project Listed
XWebAgency, Your trusted web agency. We offer website design, web development, SEO services, digital marketing, and e-commerce solutions to help your business grow online...
Top Services:
- Digital Marketing
- Mobile App Development
- Web Design
- SEO
- eCommerce Development
- Show more
- Location
- Desert Hot Springs, California
- Number of Employees
- Under 49
- Average Hourly Rate
- $55/hr
- Minimal Budget
- Under $1,000
- Portfolios Count
- 4 Projects Listed
We are a full-cycle IT development company that designs and creates perfect solutions based in the US with HQ in Walnut, California. Our experience in diverse marketplaces allows us to offer high-level service to our clients with a clear understanding of their need for flexibility, speed, and agility...
Top Services:
- Mobile App Development
- Software Development
- AI Development
- UI/UX Design
- Web Development
- Show more
- Location
- Walnut, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $50/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
BitsWits guarantees app delivery in 4 weeks, building native iOS and Android apps alongside Flutter, React Native, AR/VR, blockchain, and mobile game solutions. With 10+ years in business, it has launched 1,200+ successful projects, served 100+ global clients, and won a Horizon Interactive Gold Award...
Top Services:
- Mobile App Development
- Software Development
- VR/AR
- Blockchain
- AI Development
- Show more
- Location
- Los Angeles, California
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $25,000 - $50,000
- Portfolios Count
- 12 Projects Listed
Double Coconut is a San Franciscobased boutique game development studio founded in 2012. The agency specializes in full-service game design and co-developmentfrom casual mobile and web titles to casino, mid-core, and Web3 games. Their projects have reached over 5 million players and generated...
Top Services:
- Software Development
- Web Design
- Mobile App Development
- Blockchain
- Show more
- Location
- San Francisco, California
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $25/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 8 Projects Listed
Related Services in California
Related Mobile App Development Specializations in California
Popular Services
Why companies trust DesignRush
Every agency is independently vetted before it can be listed or ranked
Some agencies pay for sponsored placement, clearly labeled and held to the same vetting standards.











