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

3 Companies-Rankings updated: September 05, 2026

Every agency on DesignRush meets evaluation criteria around expertise and client feedback to empower informed choices. Some listings include paid partnerships.

Expertise
Arts
$10,000 - $25,000
Sort by: Sponsored
United States × California × Arts × $10,000 - $25,000 ×Clear Filters

  • Ptolemay

    IT Solutions for Promising Businesses

    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

    Ptolemay Services

    • Mobile App Development
    • Software Development
    • AI Development
    • UI/UX Design
    • Web Development
    • Staff Augmentation
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Samsung
    • Knauf
    • Tilda RetailCRM
    • Coca-Cola
    • Roonyx INC
    • Sola
    • Technaxis
    • Arsidian LLC
    • Cumulative Business Solutions LLC
    • Tegen LLC
    Data sourced from the agency's DesignRush profile

    Ptolemay Reviews & Testimonials

    • Vladimir Drogan
      Vladimir Drogan ceo at roonyx
      5.0★

      Mobile App Development Review from Vladimir Drogan

      They are the top app developers Ive ever worked withI'm most impressed with Ptolemay's ability to properly plan the process, manage their work, and communicate early about what it will take. They're clearly experienced, understand what's needed, and are truthful and honest about it. With Ptolemay, I don't have to worry about the ongoing process since all updates are easy to access.

    • Ekaterina Rebus
      Ekaterina Rebus Marketing Manager at MetaLamp
      4.8★

      Mobile App Development Review from Ekaterina Rebus

      They are true experts in mobile app development!The most important thing to us when working with any company is that they take responsibility for the work they do and show a high level of expertise in their field. We have never worked with a company that has demonstrated such dedication to their craft as Ptolemay. They have always shown up prepared and ready to get started on the project at hand, and they have even gone above and beyond in order to produce exceptional products.

    • Анастасия Головенко
      Анастасия Головенко Review from Google
      5.0★

      Анастасия Головенко's Review Sourced from Google

      We cooperate with Ptolemay for the last couple of years in terms of outstaffing demands. As we have already worked on more than 6 big projects, they have proven themselves as a reliable partner that provide high quality developers. Despite the difficulty of the position we need, they are always ready to involve their team to help us cover the demand. Even though any cooperation tend to have its own issues and misunderstanding, the Ptolemays’ team has always been open for resolving problems and finding compromise

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit WebsiteView Profile
    4.4 4.4 (2)
    5.0 5.0 (10)

  • Double Coconut

    We Build Games That Players Love.

    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

    Double Coconut Services

    • Software Development
    • Web Design
    • Mobile App Development
    • Blockchain
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Microsoft
    • WB
    • Cartoon Network
    • Ellen Degeneres
    • MIT
    • IBM
    • SAP
    • iWin
    • Addicting Games
    • Penn Gaming
    Data sourced from the agency's DesignRush profile
    Visit WebsiteView Profile

  • Chainlift

    Make the Boring Part Easy.

    Chainlift is a specialized web development firm offering tailored solutions for front-end, back-end, and middleware development. Dedicated to empowering startups, small businesses, and entrepreneurs, Chainlift is committed to elevating great ideas to new heights...

    Top Services:

    • eCommerce Development
    • Mobile App Development
    • Web Design
    Location
    Oakland, California
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    1 Project Listed

    Chainlift Services

    • eCommerce Development
    • Mobile App Development
    • Web Design
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • The Utzat Group
    • GEM Theatre
    • SoCal Powerlifting
    Data sourced from the agency's DesignRush profile

    Chainlift Reviews & Testimonials

    • Jacob Zaionz
      Jacob Zaionz Review from Google
      5.0★

      Jacob Zaionz's Review Sourced from Google

      Chainlift has been nothing short of a blessing for me and my business! I've had so many questions and they've been continually patient and informative at every step of the way. They even set me up with weekly reports on search engine rankings to provide me with insights about how we're performing in our market. 11/10, would recommend to a friend!!!Thank you, Chainlift!!!

    • Justin Melbourne
      Justin Melbourne Review from Google
      5.0★

      Justin Melbourne's Review Sourced from Google

      I discovered Chainlift through their videos on YouTube and was immediately impressed with their LiftKit system.I’m in the process of transferring my personal and professional websites over to their system so that they can put my best foot forward.The team has been very professional and provided personal approach to my projects.

    • Kelly Pratt
      Kelly Pratt Review from Google
      5.0★

      Kelly Pratt's Review Sourced from Google

      Would highly recommend Chainlift for any web design and development needs. They were a huge help to us when we needed support building a new website. Communication was great throughout the entire process, the team is highly knowledgeable, and we are thrilled with the final results of the project.

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit WebsiteView Profile
    5.0 5.0 (4)

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