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

2 Companies - Rankings updated: September 04, 2026

All agencies on DesignRush undergo evaluation based on professional expertise and verified client reviews. Please note that certain placements are paid partnerships.

Expertise
Transportation & Logistics
$1,000 - $10,000
Sort by: Sponsored
United States × Washington × Transportation & Logistics × $1,000 - $10,000 × Clear Filters

  • Sigma Software

    Superior Business Solutions

    Sigma Software specializes in developing software and is a globally distributed team of more than 2000 skilled IT professionals, spanning 12 countries including the USA, Sweden, UK, Canada, Israel, Singapore, UAE, Australia, Austria, Ukraine, and more. With a track record of over 20 successful years, we take...

    Top Services:

    • Software Development
    • Web Design
    • Mobile App Development
    • VR/AR
    • Business Consulting
    • Show more
    Location
    Bellevue, Washington
    Number of Employees
    1000 & Up
    Average Hourly Rate
    $40/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    14 Projects Listed

    Sigma Software Services

    • Software Development
    • Web Design
    • Mobile App Development
    • VR/AR
    • Business Consulting
    • Web Development
    • UI/UX Design
    • Cybersecurity
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Knorr-Bremse
    • AstraZeneca
    • Volvo Penta
    • SAS
    • Fortum
    • Mindvalley
    • Aol.
    • IGT
    • Viaplay
    • DanAds
    Data sourced from the agency's DesignRush profile

    Sigma Software Reviews & Testimonials

    • Nikita Vershinin
      Nikita Vershinin VP of Engineering at Ankorstore
      5.0 ★

      Software Development Review from Nikita Vershinin

      We've partnered with Sigma Software for almost three years, and they proved to be a strong partner with whom we'll keep working. Their adaptability and willingness to get things done are unique, setting them apart from other providers. Moreover, they demonstrate a strong sense of ownership.

    • Michael Meyer
      Michael Meyer Managing director at trendwaerts GmbH
      5.0 ★

      Software Development Review from Michael Meyer

      We were so positively surpised and happy about Sigmas services - as usual I might add. It is a pleasure working with their software engineers. After we provided a briefing, the effort estimation came right away. Shortly after the project started we could see first tangible results. The code quality was excellent and comprehensive. Minor feedback was implemented right away. What can I say more: 10 out of 10 points!

    • Esther Howard
      Esther Howard Founder / CEO at Bezyl
      5.0 ★

      Mobile App Development Review from Esther Howard

      The client is incredibly happy with Sigma's services and work. It has referred 3 other clients who also say how much they really love the team and process to get set up with the agency. Sigma is a fantastic company with excellent experienced professionals. Its experts care about quality and customer satisfaction, and they operate like the internal team's extension. (Verified via email)

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    4.6 4.6 (4)
    4.8 4.8 (81)

  • Integrated IT Solutions

    Honesty - Respect & Reliability. Technology That Works for You As You.

    Integrated IT Solutions provides IT services that help businesses grow and thrive. With over 15 years of experience in software development, mobile apps, digital marketing, and custom integrations, were making the digital journey smooth and successful...

    Top Services:

    • Software Development
    • Web Development
    • Mobile App Development
    • Digital Marketing
    • Show more
    Location
    Clarkston, Washington
    Number of Employees
    Under 49
    Average Hourly Rate
    $65/hr
    Minimal Budget
    $1,000 - $10,000
    Portfolios Count
    2 Projects Listed

    Integrated IT Solutions Services

    • Software Development
    • Web Development
    • Mobile App Development
    • Digital Marketing
    Data sourced from the agency's DesignRush profile, its website, and other relevant accounts
    • Fresh Tracks Transportation
    • Delta Transportation
    • Blue Shuttle Van
    • Ride Taxi
    • Bitmaven
    • Heavenly Hands
    • A Promising Tomorrow
    • A1SC
    • Blue Birds Transportation
    • Transport Solutions
    Data sourced from the agency's DesignRush profile

    Integrated IT Solutions Reviews & Testimonials

    • Alegnta Yimam
      Alegnta Yimam Review from Google
      5.0 ★

      Alegnta Yimam's Review Sourced from Google

      Definitely recommend! Integrated has been our most reliable partner for the last five years. They designed and deployed our dispatching software from scratch, followed up, and addressed all the concerns we had. They are also handling our marketing and providing all other IT support we need. Bryan is very well-rounded and trustworthy! I wanted to give them a sixth star... but Google came up short.

    • Lauren Bo
      Lauren Bo Review from Google
      5.0 ★

      Lauren Bo's Review Sourced from Google

      I would truly recommend utilizing Integrated IT solutions. The database that they have created for my business has done wonders. The team is always ready to help whenever I reach out and guides me step by step on how to resolve any issue that may occur. I would definitely recommend!

    • Lisa Liberatore
      Lisa Liberatore Review from Google
      5.0 ★

      Lisa Liberatore's Review Sourced from Google

      Integrated IT solutions have exceeded every hope and expectation! In partnering with them to create a Web platform for my agency's 25 employees to use, not only has my workload and stress been reduced, but the platform has received raves from my employees, who love using it! I can now dedicate more time and energy towards increased growth of my agency instead of tedious paperwork. Thank you to Bryan and the whole team, they never disappoint!

    Reviews verified by DesignRush and sourced from the agency's profile View All Reviews
    Visit Website View Profile
    5.0 5.0 (6)

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