Our expert analysts identified the leading mobile app developers in California that create high-performance apps that engage and retain their user base. Filter listings by city, team size, cost of services and reviews to personalize your search. Choose the best partner for your brand and take advantage of these agencies' expertise and experience.

Best California Mobile App Developers

621 Companies-Rankings updated: August 19, 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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  • Terralogic

    Design Driven Technology Innovations

    As a leading digital transformation services company, we harness the potential of Artificial Intelligence, Cloud, IoT, Robotics, Data Analytics, and other Emerging Technologies. As the best IT solutions services agency, we are a global technology provider who assists businesses to accelerate their digital...

    Location
    San Jose, California
    Number of Employees
    Under 49
    Visit WebsiteView Profile
    3.7 3.7 (3)

  • Iteration Group

    Redesigning and Modernizing Software and Applications.

    Iteration Group is a boutique product-strategy and user-experience consultancy founded in 2011. The agency partners with startups, well-capitalized ventures, consumer brands, and enterprises to deliver purposeful product design from UX/UI strategy and wireframes to functional prototypes and scalable app...

    Location
    Westlake Village, California
    Number of Employees
    Under 49
    Visit WebsiteView Profile

  • United Techno

    Empower Your Business through Transformative IT Services.

    United Techno is a global IT-services and consulting firm offering data management & AI solutions, application modernization, cloud & legacy-system modernization, integration, QA/testing, and digital transformation helping businesses across retail, logistics, life sciences, e-commerce and other sectors...

    Location
    Pleasanton, California
    Number of Employees
    250 - 499
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  • iQlance Solutions Canada

    Canadas Trusted Partner

    iQlance Solutions Canada is a global technology service provider specializing in delivering advanced digital products tailored to modern business needs. The company focuses on building scalable, secure, and high-performance solutions, helping organizations turn their ideas into successful digital platforms...

    Location
    Ontario, California
    Number of Employees
    50 - 99
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile

  • Design Sketchers

    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...

    Location
    Modesto, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $1000/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    2 Projects Listed
    Visit WebsiteView Profile
    1.0 1.0 (2)

  • Web-Rift

    Websites That Turn Traffic Into Leads

    Websites Built for Speed & Conversion. We create stunning, high-converting websites for businesses worldwide. Based in San Jose, CA Stand out from competitors, attract more leads, and grow your revenue. Get Your Website Live Fast...

    Location
    San Jose, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $500/hr
    Minimal Budget
    Under $1,000
    Portfolios Count
    2 Projects Listed
    Visit WebsiteView Profile

  • Geex Arts

    Designing Memorable Digital Products

    Geex Arts is a digital product design and development agency offering consultancy and end-to-end support for bringing innovative digital products to market. With a prominent international presence and a track record of success across multiple continents, it specializes in design, branding, mobile app...

    Location
    Mountain View, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile

  • Rocket Systems

    Rocket your business forward with our expertise.

    Rocket Systems is focused on producing high-quality code, we take extra precautions to ensure that our technological approach is congruent with the ambitions of our customers. Additionally, we strive to create code bases that are both scalable and easily maintained. In order to construct a digital product...

    Location
    Sacramento, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile

  • Kaaspro

    Accelerating Business Growth Through Technology

    Kaaspro Solutions is a full-stack IT and product engineering company helping businesses accelerate digital transformation. We specialize in custom software, HRMS & payroll platforms, mobile & web apps, cloud solutions, and AI-driven innovations to build scalable, reliable, and future-ready technology...

    Location
    Menlo Park, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile
    4.2 4.2 (12)

  • Dr Developers

    Changing the Future Helping You Evolve

    Dr Developers is a full-service web design and development agency specializing in prototyping, strategy, and full stack development. We have undertaken terrific projects for industries such as e-commerce, healthcare, education, banking and finance, marketing, publishing and communications...

    Location
    Sacramento, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
    Visit WebsiteView Profile

  • NEXTWERK

    Software Solutions Simplified

    As a software services firm, delivering excellence is our mission. We offer development services through specialized teams segmented through our various brands. ​Whether that is app or website development, WordPress, Open Source, Billing, or E-commerce; we​ deliver what we promise. We have simplified the...

    Location
    Carlsbad, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $15/hr
    Minimal Budget
    Under $1,000
    Visit WebsiteView Profile

  • Serious Development

    Intelligent solutions for competitive advantage

    We are seasoned business owners, product managers, project managers, and software engineers who are committed to assisting you in expanding your company...

    Location
    Pasadena, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile

  • Design and Test Lab

    Mobile reliability guaranteed

    Design and Test Lab places the development of reliable mobile applications at the forefront of its priorities through the Mature Mobile Reliability Standard. However, we do not merely focus on writing code, we assist clients in building superior products by walking with them every step of the way, refining...

    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile

  • Technicate Solutions

    High-Quality Development Team

    Technicate studies concepts and develops the product from the ground up, from simple ideas to effective applications. We immediately transform into your dependable, quick, high-quality development team...

    Location
    Rancho Cordova, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile
    4.2 4.2 (5)

  • Paradigm Solutions

    AI-native Engineering. Enterprise-grade Results

    Paradigm provides custom low-code software solutions. Our commitment is to empower organizations with the tools they need to streamline processes, automate tasks, and scale operations efficiently. Through a fusion of expert development and a deep understanding of our clients' unique challenges, we aim to be...

    Location
    Temecula, California
    Number of Employees
    Under 49
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile
    5.0 5.0 (1)

  • Nova Era Agency

    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...

    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
    Visit WebsiteView Profile
    5.0 5.0 (19)

  • Halkwinds

    Inspired by Technology

    Hawkwinds is a leading Custom software development company specialized in Fantasy Sports, Social network and AI. We build the world’s best fantasy sports software & Social network solutions. Get in touch with us today...

    Location
    Hayward, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile

  • Kegan Quimby

    Grow Your Web Presence

    In what has proven to be the best decision of my life, I took the summer of 2012 off to ride my bike across the country to raise money and awareness for affordable housing...

    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile
    5.0 5.0 (17)

  • Programize LLC

    Enterprise-grade Solutions

    We work with world-class startups, businesses, and institutions as part of an exceptional team of software engineers and technology wizards...

    Location
    Riverside, California
    Number of Employees
    100 - 249
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  • ConstantMD Inc.

    Complete IT & Digital Service Solutions

    California, United States: ConstantMD Inc. ConstantMD, which began operations in 2011 and has worked with more than 100 clients globally, is one of the most well respected offshore software development service providers on the market for its exceptional quality and dedication to innovation. To satisfy the...

    Location
    Riverside, California
    Number of Employees
    Under 49
    Visit WebsiteView Profile

  • KAMPP Technology and Marketing

    Empower Your Business With Custom Marketing Solutions.

    Kampp Technology & Marketing as the Internet Marketing Company in Orange County, We Implement A Marketing Strategy Specifically For your Business Needs , We do not take one solution fits all approach so with us you are getting 100 % Tailored and customized Internet Marketing Solution which seamlessly...

    Location
    Laguna Hills, California
    Number of Employees
    Under 49
    Minimal Budget
    Under $1,000
    Visit WebsiteView Profile

  • FACTn Software

    Empowering Innovation, Connecting Excellence

    FACTn Software, your trusted partner in software engineering outsourcing solutions. Founded with a passion for technological innovation and a commitment to excellence, FACTn Software is dedicated to providing top-tier software engineering talent to companies in the Scandinavian region and beyond...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile
    5.0 5.0 (10)

  • Eduardo Sebastian Paz

    Crafting User Experiences That Inspire.

    Hey there! My name is my name is Eduardo Sebastian Paz, I'm an Interaction Designer and Computer Science Technologist based in Los Angeles. My goal is to create impactful and emotional experiences, both digitally and in the real world, to contribute to a better future for all...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile

  • Almost Digital

    Helping Our Partners Build Scalable Digital Brands

    At Almost Digital, success is more than a milestone its our mindset. Were a collective of bold, creative women driven by passion, proven skill, and an uncompromising commitment to excellence...

    Location
    San Diego, California
    Number of Employees
    Under 49
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile

  • Raindrops Infotech

    Mobile App and Web Designing Company in California

    At Raindrops Infotech, we prioritize your success through expertise, innovation, and unwavering support. Our skilled team customizes solutions that align with your vision, ensuring you achieve your business goals efficiently. Let us partner with you on this journey!...

    Location
    Garden Grove, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile

  • Rare Crew

    Bridging the Gap Between Business and Technology

    Rare Crew is a custom software development company with over a decade of experience. Rare Crew develops custom solutions for all kinds of business, from multinational organizations to start-ups looking to grow their business...

    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile

  • Agile Soft Systems

    Enable, innovate, transform

    A team of Tech-savants focused on simplifying complexities in the technology realm. We combine our technical expertise with product mindset that helps Enterprises to strengthen and transform their business by providing state-of-the art software development services...

    Location
    Fremont, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile
    4.3 4.3 (6)

  • Keeks Creative

    We Build, Grow & Transform Brands

    Keeks is a creative agency focused on storytelling and design, specializing in developing innovative, thoughtful, and immersive print and digital experiences that seamlessly integrate across a brand's entire ecosystem...

    Location
    San Diego, California
    Number of Employees
    Under 49
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile

  • Andrew Baygulov

    We Bring Ideas To Life

    Andrew Baygulov specializes in product and visual design, combining strategy, aesthetics, 3D visualization, and motion design to transform initial concepts into products that people genuinely enjoy using...

    Location
    San Francisco, California
    Number of Employees
    Under 49
    Portfolios Count
    1 Project Listed
    Visit WebsiteView Profile

  • Tech.us, Inc

    Build Better Software.

    Tech.us is an AI software solutions company that provides AI development, mobile applications, cloud consulting, and IT services. We focus on creating secure, scalable, and innovative technologies that support businesses in their digital journey...

    Location
    San Jose, California
    Number of Employees
    100 - 249
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile

  • Metamins

    Driving the Digital World Forward

    Metamins specializes in creating high-loaded web solutions, mobile applications, and IoT technologies. As a preferred partner for innovation-oriented companies, we provide best-in-class R&D services, extending our clients' reach to millions of users worldwide...

    Location
    Burlingame, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile

  • Infinite Digital Group

    Innovate, Iterate, Impress

    With an unwavering commitment to excellence, we have cemented our position as the go-to agency for innovative and groundbreaking digital marketing solutions. At IDG, we possess a definite belief in the power of brand elevation and transformative growth. Our team of experts, armed with unparalleled expertise...

    Location
    Concord, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $120/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile
    5.0 5.0 (10)

  • Bayshore Intelligence Solutions

    Empowering Your Ideas With AI Based Digital Solutions.

    We empower start-ups and mid-sized enterprises worldwide, crafting and refining their dream projects with cutting-edge technology. Our hallmark lies in Ideation and Innovation, the driving forces behind each successful Intelligent Application...

    Location
    Dublin, California
    Number of Employees
    Under 49
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    5.0 5.0 (1)

  • Web Design Vibe

    Make Your Idea The Talk Of The Web

    Web Design Vibe is a full-service digital agency specializing in custom website design, e-commerce solutions, branding, and SEO strategies that help businesses build a powerful online presence and drive measurable growth...

    Location
    San Francisco, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $20/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed
    Visit WebsiteView Profile

  • VinnCorp

    Build Your High Tech Remote Teams in 24 Hours

    VinnCorp is the best Digital Transformation Firm, with a wide range of services being offered to the clients like Web Development, Enterprise systems, Social Media Marketing, UI/UX Designing, Mobile App Development, and System Integration performed by the core team with years of experience...

    Location
    Elk Grove, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $25/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile

  • Hospitality Marketing Concepts

    Connecting Hotels & Affluent Guests Globally

    HMC is the worlds leading provider of outsourced database management and loyalty marketing programmes for premium hotel organizations. Our core competencies are the creation, implementation, management and marketing of custom-made programmes designed to drive incremental revenue and profits into each partner...

    Location
    Newport Beach, California
    Number of Employees
    250 - 499
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  • Venice Solution

    Turn Opportunities Into Success.

    Digital Marketing and Creative Consulting - strategy, technology, and design are the cornerstones of developing user experiences that support your needs and strengthen your business...

    Location
    San Mateo, California
    Number of Employees
    Under 49
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  • Slick

    Leading UI/UX design experts

    We are a product design studio with the power to change the world by improving the entire design process within organizations...

    Location
    San Jose, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile
    5.0 5.0 (10)

  • SweetSoft INC.

    Innovative Software Solutions for Your Business

    Sweetsoft is a client-oriented software development and outsourcing company that specializes in web, mobile and desktop app development, data science, QA & Automated testing, bot development and UX/UI services. With a presence in Santa Monica, Budva, and Kharkiv, our experts can join existing teams or execute...

    Location
    Santa Monica, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $50,000 & Up
    Visit WebsiteView Profile

  • E8 Labs

    We Build Startups

    E8 Labs goes beyond the typical agency role by providing founders and startups with a distinctive approach to reaching product market fit at an accelerated pace. In addition to developing an MVP, we also prioritize scalability for subsequent versions...

    Location
    San Jose, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $199/hr
    Minimal Budget
    $25,000 - $50,000
    Visit WebsiteView Profile
    4.6 4.6 (41)

  • All Star Technology

    Results-Focused Methodology

    We are more than just a group of knowledgeable software developers. We are a company that provides product solutions, from concept to launch...

    Location
    Irvine, California
    Number of Employees
    500 - 999
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile

  • Bean Machine

    Startup professionals you can trust

    Founded by a team of seasoned startup professionals, Beanmachine is a dedicated platform designed to assist entrepreneurs and businesses in transforming their mobile or web ideas into reality...

    Location
    Orange County, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $10,000 - $25,000
    Visit WebsiteView Profile

  • SETA International

    Light up Ideas To Create Future.

    Offering IT outsourcing and consulting services, we specialize in web and mobile development that harnesses the potential of AI, IoT, Big Data, and Blockchain technologies. Our focus is on tailoring cutting-edge solutions to effectively address clients' challenges and drive achievements across diverse...

    Location
    Irvine, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $18/hr
    Minimal Budget
    $1,000 - $10,000
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  • Bransys

    You Set Expectations. We Exceed Them.

    Bransys Group was first introduced into the marketplace in 2008 in Skopje, Macedonia, founded by Branko Trajkovski. Bransys is a product-oriented company that makes, develops and sales Hardware and Software, designed for GPS and tracking devices...

    Location
    Walnut Creek, California
    Number of Employees
    50 - 99
    Average Hourly Rate
    $50/hr
    Minimal Budget
    Under $1,000
    Visit WebsiteView Profile

  • Coreware Group

    Custom Software for Businesses

    Consider us an extension of your team and your technical co-founders, the highly qualified engineers who will create, develop, and maintain the software systems required to power your idea...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $25,000 - $50,000
    Visit WebsiteView Profile
    4.9 4.9 (325)

  • Atlantis

    Straight hands. Hot heads.

    We use the best world practices (YAGNI, KISS, DRI, and SOLID). An enterprise approach is an advantage, not an excuse. An extreme approach to development allows us to resort to the use of development-driven methodologies, in particular design, domain, bound, and testing...

    Location
    Newport Beach, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile

  • MEV

    Software Development Made Easier.

    Craft exceptional digital solutions with a team of design, development, and strategy specialists. Everything you need is in one place...

    Location
    Walnut Creek, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $45/hr
    Minimal Budget
    $50,000 & Up
    Visit WebsiteView Profile

  • Aunimeda

    From The Silicon Steppe To Silicon Valley

    Aunimeda Software is a premier IT agency specializing in high-performance Next.js development, international SEO, and strategic branding. Established in 2010, we bridge the gap between US business standards and elite Central Asian engineering. With a 24/7 "Follow-the-Sun" development cycle across our hubs in...

    Location
    Los Angeles, California
    Number of Employees
    100 - 249
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $1,000 - $10,000
    Visit WebsiteView Profile
    5.0 5.0 (11)

  • EltexSoft

    Senior Web, Mobile & AI Engineering

    Boutique studio of senior engineers building web, mobile, and AI products since 2015. We embed as a long-term extension of your team and ship code that lasts. 5.0 on Clutch, top 1% on Upwork...

    Location
    Los Angeles, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $25,000 - $50,000
    Visit WebsiteView Profile
    5.0 5.0 (3)

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