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

83 Companies - Rankings updated: September 05, 2026

Each agency undergoes DesignRush evaluation for professional expertise and genuine client satisfaction to assist your search. Some featured placements are paid.

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  • Velosys

    Where Windows Apps Fuel Smart Business Solutions

    Where Windows Apps Fuel Smart Business Solutions

    Velosys is a leading technology consulting firm specializing in Windows App Development, offering tailored software solutions for major clients in financial services, energy, and the Federal Government, including the Department of Defense...

    Top Services:

    • Mobile App Development
    Location
    Poulsbo, Washington
    Number of Employees
    50 - 99
    Average Hourly Rate
    $150/hr
    View Profile

  • Itirra

    Small enough to care, big enough to get the job done

    Small enough to care, big enough to get the job done

    A boutique technology consulting firm with passion, care, and innovation at its core...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • IT Services
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $50/hr
    View Profile
    5.0 5.0 (2)

  • New Normal

    Unleash Innovation. Embrace Change.

    Unleash Innovation. Embrace Change.

    New Normal is a dynamic agency specializing in website and mobile development services, guiding clients through strategic decisions and technical solutions. It helps businesses navigate the complexities of technology selection and implementation. The agency's expertise extends to custom web applications...

    Top Services:

    • Mobile App Development
    • Web Development
    • IT Services
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • Makeen Technologies

    Tech Solutions For Your Business

    Tech Solutions For Your Business

    Profit from our highly qualified teams' expertise in selecting the ideal technological solution for your requirements...

    Top Services:

    • Mobile App Development
    • Web Development
    • Software Development
    Location
    Redmond, Washington
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $25,000 - $50,000
    View Profile

  • Digital Awesome

    Get an app that wins!

    Get an app that wins!

    Digital Awesome is a reliable and comprehensive mobile app development company that has been dedicated to serving its clients since 2014. Our focus is on building long-term partnerships with our clients, making us a trusted partner that you can rely on throughout the entire lifespan of your app...

    Top Services:

    • Mobile App Development
    • Web Development
    Location
    Airway Heights, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • AccelOne

    Accelone Advancing What's Possible

    Accelone Advancing What's Possible

    Embark on your digital transformation journey with AccelOne's Software Development delivery model, strategically designed for optimal outcomes. Initiate your digital transformation seamlessly through our comprehensive nearshore and US-based services...

    Top Services:

    • Software Development
    • Mobile App Development
    • Blockchain
    • UI/UX Design
    • eCommerce Development
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Minimal Budget
    $25,000 - $50,000
    Portfolios Count
    5 Projects Listed
    View Profile
    4.2 4.2 (5)

  • Strive Enterprise

    Lets Grow Online

    Lets Grow Online

    Strive Enterprise is the ultimate solution for impactful web design, custom digital marketing solutions, and professional SEO services...

    Top Services:

    • Web Design
    • SEO
    • Digital Marketing
    • Web Development
    • WordPress Website Design
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    10 Projects Listed
    View Profile
    5.0 5.0 (360)

  • 9series

    Handcrafted Technology Solutions

    Handcrafted Technology Solutions

    At 9series, we help organizations move beyond traditional software by building intelligent systems powered by AI...

    Top Services:

    • Mobile App Development
    • AI Development
    • IoT
    • Software Development
    • Cloud Consulting
    • Show more
    Location
    Bellevue, Washington
    Number of Employees
    250 - 499
    Average Hourly Rate
    $40/hr
    Portfolios Count
    3 Projects Listed
    View Profile

  • Pelotech

    Seasoned Senior Developers Specialized In Kubernetes And Cloud Solutions

    Seasoned Senior Developers Specialized In Kubernetes And Cloud Solutions

    At Pelotech, we're a team of seasoned senior developers specialised in Kubernetes and cloud solutions. We partner with companies, from Fortune 500 giants to mid-sized businesses, to solve complex challenges in cloud migration, integrations, application development and modernisation initiatives...

    Top Services:

    • Software Development
    • Cloud Consulting
    • Mobile App Development
    • Managed Services
    • DevOps Consulting
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $200/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • Arcade Dev House

    Australia-Based Product Studio

    Australia-Based Product Studio

    We support entrepreneurs and companies as they reach a global audience with amazing digital products...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • UI/UX Design
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • AIM Consulting

    An Addison Group Company

    An Addison Group Company

    AIM Consulting partners with businesses to set a strategic direction, understand the customer journey, design and develop innovative software, leverage data for actionable insights, and automate deployment to secure cloud platforms. We help companies launch their most ambitious initiatives. Solving the...

    Top Services:

    • Mobile App Development
    Location
    Bellevue, Washington
    Number of Employees
    500 - 999
    View Profile
    4.1 4.1 (38)

  • Sandcastle Web Design & Development

    A conscientious team delivering consistent results.

    A conscientious team delivering consistent results.

    Sandcastle is a full-service web design and development company specializing in e-commerce, custom application development, mobile technologies, hosting and maintenance. Our capabilities focus on creating platforms tailored to meet the specific needs of your business. These include third-party integrations...

    Top Services:

    • eCommerce Development
    • Web Development
    • Mobile App Development
    • Web Design
    • Software Development
    • Show more
    Location
    Burien, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $125/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    9 Projects Listed
    View Profile
    4.4 4.4 (9)

  • Jelvix

    GLOBAL TECH PARTNER FOR DIGITAL TRANSFORMATION AND SOFTWARE INNOVATION

    GLOBAL TECH PARTNER FOR DIGITAL TRANSFORMATION AND SOFTWARE INNOVATION

    Jelvix is a global tech partner with 15+ years of experience, empowering industry leaders and startups. With 450+ IT experts, we drive digital transformation across Europe, North America, Nordics, and Southeast Asia...

    Top Services:

    • Software Development
    • Mobile App Development
    • VR/AR
    • AI Development
    • IoT
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    500 - 999
    Average Hourly Rate
    $70/hr
    Portfolios Count
    10 Projects Listed
    View Profile

  • Sam's Solution

    Software Application Masters.

    Software Application Masters.

    Sam's Solution is a dynamic software company specializing in custom software, web and mobile app development, IT consulting, and digital transformation. We deliver innovative, tailored tech solutions that help businesses streamline operations, boost efficiency, and achieve their strategic goals...

    Top Services:

    • Mobile App Development
    • Web Development
    • AI Development
    • Digital Marketing
    • eCommerce Development
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $30/hr
    Portfolios Count
    8 Projects Listed
    View Profile

  • Uruit

    A Nortal company

    A Nortal company

    We build web & mobile apps for leading brands...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • AI Development
    • UI/UX Design
    • Show more
    Location
    Kirkland, Washington
    Number of Employees
    250 - 499
    Average Hourly Rate
    $55/hr
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    8 Projects Listed
    View Profile

  • Altarey

    Big ambition. Small steps. Great results

    Big ambition. Small steps. Great results

    US based custom software development company with local presence in New York, Seattle and Bogota that has a strong industry focus on FinTech, E-Commerce and Blockchain industries. Besides being a great IT employer, we have been featured in Global Outsourcing List...

    Top Services:

    • Blockchain
    • Mobile App Development
    • Software Development
    • Business Consulting
    • Show more
    Location
    Bellevue, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $80/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    9 Projects Listed
    View Profile

  • BlueLabel

    A highly recommended mobile app development company

    A highly recommended mobile app development company

    Blue Label Labs is a premier digital product agency, providing a comprehensive array of services to transform businesses in the digital realm. With a strong global presence, we specialize in mobile app development, especially iPhone app development, publishing app development, web design, and product...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • Blockchain
    • Wearables
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    22 Projects Listed
    View Profile
    5.0 5.0 (17)

  • Opus Online

    Software development that goes beyond coding

    Software development that goes beyond coding

    We've got the know-how to deliver top-notch corporate web portals, eCommerce sites, mobile apps, and information systems. Plus, we're experts at tackling complex custom software engineering projects. Trust us to navigate even the trickiest technical terrain with ease...

    Top Services:

    • Software Development
    • Mobile App Development
    • eCommerce Development
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile
    4.8 4.8 (8)

  • UKAD-group

    Build a team you can rely on!

    Build a team you can rely on!

    Development services delivered with a personal approach...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    Location
    Seattle, Washington
    Number of Employees
    50 - 99
    Average Hourly Rate
    $30/hr
    Portfolios Count
    3 Projects Listed
    View Profile

  • Ravenna

    Strategic Web and Mobile App Development

    Strategic Web and Mobile App Development

    We are Ravenna. A website design and development firm in Seattle, WA. We know design and development like the back of our hand but to be honest, so does everybody else. What makes us different is our approach at Ravenna, we use our ears as much as our keyboards. Listening is the key to making sure your...

    Top Services:

    • Web Development
    • Mobile App Development
    • Design Services
    • Web Design
    • Branding
    • Show more
    Location
    Lynnwood, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $150/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    3 Projects Listed
    View Profile

  • Limelyte Technology Group

    Professionalism. Responsiveness. Quality.

    Professionalism. Responsiveness. Quality.

    We design and develop software applications to help your business run more efficiently and generate new revenue. Tell us what you do, and we'll help you do it better...

    Top Services:

    • Mobile App Development
    • IT Services
    • Software Development
    • Web Development
    • AI Development
    • Show more
    Location
    Spokane, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $100/hr
    View Profile
    4.4 4.4 (7)

  • Tragic Media

    Don't let your next technology project turn into a tragedy!

    Don't let your next technology project turn into a tragedy!

    We provide fractional CTO services backed by a senior product and engineering team...

    Top Services:

    • AI Development
    • Software Development
    • Mobile App Development
    • eCommerce Development
    • Web Design
    • Show more
    Location
    Federal Way, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $130/hr
    Minimal Budget
    $10,000 - $25,000
    Portfolios Count
    2 Projects Listed
    View Profile

  • Avanade

    Look forward to a sustainable future with us!

    Look forward to a sustainable future with us!

    Avanade is a leading digital innovator that offers a comprehensive suite of services to empower businesses with transformative technology solutions...

    Top Services:

    • CRM Consulting
    • DevOps Consulting
    • Mobile App Development
    • Cloud Consulting
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    1000 & Up
    Portfolios Count
    3 Projects Listed
    View Profile
    3.8 3.8 (10)

  • Blink UX

    Break Through With Blink

    Break Through With Blink

    From insight to impact, Blink UX builds the strategy, design, and confidence you need to launch products that break through...

    Top Services:

    • UI/UX Design
    • Product Design
    • Design Services
    • Branding
    • Digital Services
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    4 Projects Listed
    View Profile
    4.6 4.6 (29)

  • Synapse Product Development

    Synapse is a product development and consultancy firm.

    Synapse is a product development and consultancy firm.

    With deep expertise across a vast range of engineering and consulting disciplines, our teams own the challenge of delivering technology solutions to transform businesses...

    Top Services:

    • Mobile App Development
    • VR/AR
    • IoT
    • AI Development
    • Software Development
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    100 - 249
    View Profile
    4.6 4.6 (18)

  • Cloud Analogy Inc

    Cloud Analogy, a Salesforce Silver Consulting Partner, is a premier Salesforce Implementation Partner and Salesforce Development Company. It has experienced and resourceful teams of 200+ CRM administrators, developers, and consultants who have successfully delivered more than 400 projects...

    Top Services:

    • Mobile App Development
    • Software Development
    • Web Development
    • Web Design
    • IT Services
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    250 - 499
    View Profile

  • Onetree

    Onetree: Creating beautiful interactive solutions

    Onetree: Creating beautiful interactive solutions

    At Onetree, we are a technology services and consulting company that leverages our expertise and knowledge in software development and UI/UX design to assist clients across a wide range of industries in more than 10 countries. Our goal is to provide high-quality solutions that help our clients achieve their...

    Top Services:

    • Mobile App Development
    • AI Development
    • Software Development
    • IoT
    • UI/UX Design
    • Show more
    Location
    Kirkland, Washington
    Number of Employees
    100 - 249
    Average Hourly Rate
    $99/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile
    4.4 4.4 (29)

  • Markup Designs

    Mark your Brand Up

    Mark your Brand Up

    Global Leader in Mobile App Development & Digital Engineering...

    Top Services:

    • Mobile App Development
    • Software Development
    • Blockchain
    • AI Development
    • IoT
    • Show more
    Location
    Sammamish, Washington
    Number of Employees
    250 - 499
    Average Hourly Rate
    $50/hr
    Minimal Budget
    $1,000 - $10,000
    View Profile
    4.0 4.0 (152)

  • Montana Banana

    Expert Internet strategies for your evolving needs.

    Expert Internet strategies for your evolving needs.

    We provide comprehensive needs analysis, design, and implementation services to ensure successful Internet strategies for our clients. Our team specializes in LAMP-based codebases and offers ongoing website evolution support to ensure our clients stay up-to-date with the latest technology. Trust Montana...

    Top Services:

    • Web Development
    • Mobile App Development
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile

  • Smashing Ideas

    Driving Digital Impact, Powered by Motivational UX.

    Driving Digital Impact, Powered by Motivational UX.

    Smashing Ideas, founded in 1996, is a Seattle-based design and innovation agency partnering with Global 500 companies. With expertise in smart products and digital experiences, their unique Motivational UX process accelerates transformation and enhances user engagement...

    Top Services:

    • Software Development
    • Product Design
    • UI/UX Design
    • Big Data Analytics
    • Cloud Consulting
    • Show more
    Location
    Seattle, Washington
    Number of Employees
    50 - 99
    Minimal Budget
    $50,000 & Up
    Portfolios Count
    1 Project Listed
    View Profile
    5.0 5.0 (4)

  • MSOFT

    Technology Partner

    Technology Partner

    Since 2014, MSOFT has created high-load, complex, and distributed systems for enterprise clients. We engage industry leaders in digital transformation, designing online platforms and products, automating processes, and developing smart strategies in a digital environment...

    Top Services:

    • Web Development
    • Mobile App Development
    • Software Development
    Location
    Bellevue, Washington
    Number of Employees
    100 - 249
    Average Hourly Rate
    $75/hr
    Minimal Budget
    $25,000 - $50,000
    View Profile

  • VAO

    VAO: Full-Stack Web and Mobile Development for Your Business

    VAO: Full-Stack Web and Mobile Development for Your Business

    At VAO, over 80% of our business comes from our current clients' referrals...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $49/hr
    Minimal Budget
    $10,000 - $25,000
    View Profile
    4.7 4.7 (3)

  • Lunarbyte

    Talented Development Team

    Talented Development Team

    We work with startups, marketing agencies and enterprise companies to craft and launch big ideas...

    Top Services:

    • Software Development
    • Mobile App Development
    • Web Development
    Location
    Seattle, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $149/hr
    Minimal Budget
    $25,000 - $50,000
    View Profile

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