Find the top mobile app development companies in Washington that create high-performing and user-friendly apps to help businesses drive conversions. Use our practical tool to filter them by cost, team size and client reviews.

Best Washington Mobile App Developers

108 Companies - Rankings updated: August 13, 2026

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

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  • United Monks Technologies

    Great is Just the Beginning

    Great is Just the Beginning

    United Monks excels in helping businesses make the journey from ideation & strategy to project execution with a host of solutions like UI/UX, Mobile App Development, E-Commerce, Web & SaaS Applications, Social Media Marketing, Graphic Design, Content Strategy, Content Writing, Branding, and Cloud...

    Top Services:

    • UI/UX Design
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $10/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile

  • Altolab

    ELEVATE YOUR TEAM

    ELEVATE YOUR TEAM

    We collaborate with businesses that want to bolster the technical teams they already have on staff to create online, mobile, and desktop applications...

    Top Services:

    • IT Services
    • Software Development
    Location
    Tacoma, Washington
    Number of Employees
    Under 49
    View Profile

  • Jamie Brehm

    Humanizing technology through inclusive design.

    Humanizing technology through inclusive design.

    Hello! My name is UX designer with a desire to create social change. With a drive to provide usability solutions to complex applications, I want to focus on creating opportunities and awareness to marginalized communities...

    Top Services:

    • Mobile App Development
    • eCommerce
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    View Profile

  • Verttx

    Efficiency. Reliability. Scalability.

    Efficiency. Reliability. Scalability.

    Verttx is a premier website and mobile app development agency committed to transforming clients' concepts into reality with bespoke software solutions. Its skilled developers use the latest tools and technologies to create scalable, reliable, and maintainable software. Verttx ensures continuous support and...

    Top Services:

    • Mobile App Development
    • UI/UX Design
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile

  • RobLinx Infotech LLP

    Navigating The Path For Digital Transformation!

    Navigating The Path For Digital Transformation!

    RobLinx is an esteemed tech company based in Ahmedabad, Gujarat, known for its excellence in web development, cloud-based software development, and commitment to client success...

    Top Services:

    • Mobile App Development
    • Web Development
    • eCommerce Development
    • Software Development
    • UI/UX Design
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    View Profile
    5.0 5.0 (9)

  • Persistent

    See Beyond, Rise Above.

    See Beyond, Rise Above.

    Persistent Systems, a renowned global leader in software product development and technology services. Delve into our innovative offerings to stay ahead in the ever-evolving landscape of technology...

    Top Services:

    • AI Development
    • Software Development
    • Web Development
    • Mobile App Development
    • Blockchain
    • Show more
    Location
    Bellevue, Washington
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $100/hr
    Minimal Budget
    $50,000 & Up
    View Profile
    4.6 4.6 (730)

  • PIT Solutions

    Turn Your Digital Dreams Into Reality

    Turn Your Digital Dreams Into Reality

    PIT Solutions is a technology-driven digital services provider with a people-first culture and a proven track record of delivering impactful solutions...

    Top Services:

    • Web Development
    • UI/UX Design
    • IT Services
    • Managed Services
    • Mobile App Development
    • Show more
    Location
    Bellevue, Washington
    Number of Employees
    500 - 999
    Average Hourly Rate
    $35/hr
    View Profile
    4.5 4.5 (153)

  • Triffid Marketing

    We Help Ambitious Businesses Increase Profit

    We Help Ambitious Businesses Increase Profit

    Our goal is to offer you the top digital marketing strategies and utilize our professional expertise to your advantage. We assess and understand your business requirements to create a personalized and effective digital campaign, ultimately assisting you in succeeding online...

    Top Services:

    • Email Marketing
    • CRO
    • Digital Marketing
    • PPC
    • SEO
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    4.4 4.4 (21)

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