Best-in-Class Mobile App Development Companies in Washington
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Best-in-Class Mobile App Development Companies in Washington

Build your next breakthrough with the right partner. Explore the best Mobile App Development companies in Washington on ITProfiles.

We make it simple to discover, compare, and connect with vetted teams that fit your goals, budget, and timeline. Our neutral, data-driven rankings are built on transparent criteria and verified client feedback, so your shortlist is based on unbiased insights, not paid placement.

Filter by industry, tech stack, and company size to quickly find your perfect match. Ready to move? Create your shortlist and request proposals today.

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Average project size: $10,000 to $25,000 Average hourly rate: $50 - $99
  • Zazz
  • Salvo Software
  • Parthenon Software Group
  • 9series Inc
  • UpTop
  • Flower Press Interactive
  • AccelOne
  • States of Matter
  • Beyondsoft Consulting Inc.
  • ThirstySprout

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Top-Performing Mobile App Development Companies in Washington

15 Companies Showing Top 15 Mobile App Development Companies In Washington Updated on May 26, 2026 Editor:
    Isha Shrivastav
Every agency on ITProfiles is evaluated for expertise and client feedback to help you make informed decisions. See how we rank companies
  • Zazz
    Seattle, United States

    Crafting Memorable Digital Experience

    At Zazz, we aid your business to stay ahead of the curve by developing the necessary tech eco-system. We excel in delivering mobile, web & custom software development solutions.
    Mobile App Development, Web Development, Artificial Intelligence, User Experience
    • 51-100 Members
    • $25 - $49/hr
    • $25,000 to $50,000
  • Education, B2B, Enterprise & Real Estate Software

    Salvo Software is a software development company with experience in education, B2B, enterprise, and real estate sectors. Their multi-sector exposure provides cross-industry perspective for custom software projects. Direct inquiry about their technology stack, portfolio, and team composition is recommended for evaluating fit with specific project requirements.
    Mobile App Development, Web Development, Web Design, Product Design
    • 21-50 Members
    • $50 - $99/hr
    • $25,000 to $50,000

    Multi-Sector Custom Software Development

    Best for organizations in education, B2B, enterprise, and real estate needing custom software. Salvo Software brings cross-industry development experience for multi-vertical software projects.

    Cross-Industry Development Perspective

    With experience across education, B2B, enterprise, and real estate, Salvo brings insights from different sectors to each project. This cross-pollination can produce more flexible, better-designed software than single-industry specialists.

    Custom Software Focus

    As a custom software house, Salvo builds solutions tailored to specific business requirements rather than forcing clients into pre-built templates. This bespoke approach suits organizations with unique processes that off-the-shelf software cannot address.
  • 12 Years Building World-Class Software

    We build high performing web apps, mobile apps, and custom software for our clients. We differentiate ourselves with world-class client service and deep technical expertise with our ability to solve complex technical challenges.
    Mobile App Development
    • 21-50 Members
    • $100 - $149/hr
  • 9series Inc
    Bellevue, United States

    9series Inc is a leading software development company based in Bellevue, WA. We specialize in providing cutting-edge solutions in Web Development, Artificial Intelligence, Market Research, Mobile App Development.
    Mobile App Development, Web Development, Artificial Intelligence, Market Research
    • 51-100 Members
    • $50 - $99/hr
    • $10,000 to $25,000
  • UpTop
    Seattle, United States

    UpTop is a Seattle-based software development company that specializes in providing top-notch solutions for businesses of all sizes.
    Mobile App Development, User Experience, Software Development
    • 21-50 Members
    • $150 - $199/hr
    • $25,000 to $50,000
  • Flower Press Interactive, headquartered in Medina, WA, is a dynamic company that specializes in Mobile App Development, Web Development, Artificial Intelligence, User Experience, and Software Development.
    Mobile App Development, Software Development, User Experience, Artificial Intelligence
    • 21-50 Members
    • $150 - $199/hr
    • $25,000 to $50,000
  • AccelOne
    Kirkland, United States

    AccelOne, based in Kirkland, WA, is a leading technology company that specializes in providing a wide range of services to help businesses thrive in the digital landscape.
    Mobile App Development, Software Development, User Experience, Staff Augmentation
    • 51-100 Members
    • $50 - $99/hr
    • $10,000 to $25,000
  • States of Matter is a design and development agency based in the vibrant city of Seattle, WA. We pride ourselves on creating innovative solutions that resonate with our clients and their audiences.
    Mobile App Development, Web Development, Software Development, Web Design
    • 2-10 Members
    • $100 - $149/hr
    • $5,000 to $10,000
  • Beyondsoft Consulting Inc. is a leading technology solutions company based in Bellevue, WA. With a passion for innovation and a commitment to excellence, we pride ourselves on delivering top-notch services tailored to meet our clients' diverse needs.
    Mobile App Development, Product Design, Web Development
    • 10001+ Members
    • $150 - $199/hr
    • $10,000 to $25,000
  • Based in the vibrant city of Seattle, WA, ThirstySprout is a leading technology company specializing in innovative development solutions. With a focus on providing cutting-edge services, our team at ThirstySprout is dedicated to helping businesses thrive in the digital world.
    Mobile App Development
    • 51-100 Members
    • $50 - $99/hr
    • $50,000 to $75,000
  • Slashdev
    Seattle, United States

    Slashdev is a leading technology company based in Seattle, WA, specializing in cutting-edge software development solutions. Our team of expert developers is dedicated to providing top-notch services to help businesses thrive in the digital world.
    Mobile App Development
    • 21-50 Members
    • $25 - $49/hr
    • $5,000 to $10,000
  • Inventive Mobile is a leading mobile app development company based in Issaquah, WA. Our team of skilled developers and designers have a passion for creating innovative and user-friendly mobile applications that help businesses grow and succeed.
    Mobile App Development
    • 21-50 Members
    • $5,000 to $10,000
  • Facet Digital, LLC is a leading technology company based in Kirkland, WA, specializing in a wide range of services to meet the diverse needs of businesses looking to enhance their digital presence.
    Mobile App Development, Web Development, Software Development, User Experience
    • 21-50 Members
    • $150 - $199/hr
    • $5,000 to $10,000
  • Redmond WA: Big Data, AI & Cloud Solutions (Consulting, Dev, Testing)

    Quadrant Technologies is a Redmond, WA-based technology company providing a comprehensive suite of IT services with expertise across big data & BI, consulting, artificial intelligence, testing, cloud computing, DevOps, mobile app development, and user experience. Located in the heart of the Puget Sound tech corridor (near Microsoft headquarters), they serve clients requiring deep technology expertise with local presence. For organizations in the Seattle/Redmond area seeking a technology partner that can handle everything from AI implementation and cloud architecture through testing and mobile app delivery, Quadrant Technologies offers a broad capability set with a Pacific Northwest base.
    Mobile App Development, Big Data & BI, Consulting, User Experience
    • 1001-2000 Members

    AI, Big Data & Cloud Solutions: Redmond Tech Hub

    Organizations in the Pacific Northwest with needs spanning big data/BI, AI/ML implementation, cloud migration, testing, DevOps, and mobile app development. Best suited for companies that prefer a single vendor for diverse technology needs rather than managing multiple specialist relationships.

    AI & Big Data as Core Differentiators

    Quadrant Technologies positions big data/BI and artificial intelligence as their primary service pillars, not adjacent offerings. Their ML and predictive analytics capabilities are designed for practical business outcomes -- optimization of processes, enhanced customer experiences, and data-driven decisioning -- rather than purely theoretical AI work.

    End-to-End Digital Transformation Services

    With services spanning consulting, cloud, AI, testing, DevOps, mobile development, and UX, Quadrant Technologies covers the full digital transformation lifecycle. This breadth allows clients to evolve their technology stack holistically rather than addressing cloud, data, and mobile needs as disconnected initiatives. Their Redmond location provides proximity to Microsoft ecosystem resources.

  • Bellevue WA: Broad-Spectrum IT (AI, Big Data, Cloud, eCommerce, Mobile, DevOps)

    BrickRed Systems is a Bellevue, WA-based IT company offering an unusually broad portfolio spanning IT services, testing, consulting, artificial intelligence, big data & BI, cloud computing, DevOps, eCommerce development, and mobile app development. Their breadth suggests they can serve clients with diverse or evolving technology needs without introducing new vendors at each stage. For organizations in the Pacific Northwest -- particularly those in or near the Eastside tech corridor -- that want one technology partner capable of handling AI, cloud, eCommerce, mobile, and data analytics under one roof, BrickRed Systems offers comprehensive coverage from a single provider.
    Mobile App Development, Testing, Consulting, eCommerce Development
    • 201-500 Members

    Comprehensive IT: AI, Cloud, eCommerce & Mobile (Bellevue)

    Mid-market and enterprise organizations in the Seattle/Bellevue area that need a multi-capability IT partner covering AI, big data, cloud, DevOps, eCommerce, and mobile. Best suited for buyers who want a single vendor relationship rather than managing a panel of specialized firms across different technology domains.

    AI & Big Data as Core Offerings

    BrickRed includes artificial intelligence and big data/BI as first-class service offerings, not adjacent practices. Their AI services focus on process automation and data analytics, while their big data capabilities extract actionable insights from organizational data. For companies exploring AI adoption alongside traditional IT modernization, this built-in AI capability removes the need to source a separate AI partner.

    eCommerce & Mobile App Development

    Their specific inclusion of eCommerce development and mobile app development alongside core IT services means BrickRed can build customer-facing digital products (online stores, mobile apps) that integrate with the backend systems they also architect. This end-to-end capability from customer-facing mobile experiences to cloud infrastructure creates a more unified technical architecture than siloed vendor relationships would produce.

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