Top Mobile App Development Companies in Washington State
We ranked 9 mobile app development companies in Washington State on client reviews, how many are verified, service focus and profile completeness. Updated October 2026. How rankings work
Teams that design and build iOS, Android and cross-platform mobile apps.
- Rank 1
Seattle-area studio that designs, builds, tests, launches and maintains native iOS and Android apps for startups and large companies.
No reviews yet
Issaquah, WA
- Mobile App Development
- UX/UI Design
- Rank 2
Seattle interactive studio creating mobile apps, games, websites and video for consumer, entertainment and technology brands.
No reviews yet
Seattle, WA
- Mobile App Development
- Web Development
- UX/UI Design
- Rank 3
App and AI development agency with a Redmond office, building mobile apps and agentic AI products for mid-market and enterprise companies.
No reviews yet
Redmond, WA
- AI & Automation
- Mobile App Development
- Product Design & Development
- Team
- 100-249 people
- Rank 4
Vancouver, Washington software shop building custom web applications and mobile apps, with an in-house QA group and Linux managed services.
No reviews yet
Vancouver, WA
- Web Development
- Mobile App Development
- Custom Software Development
- Rank 5
Seattle digital agency designing and developing websites, headless commerce, web and mobile applications, and AI-enabled features.
No reviews yet
Seattle, WA
- Web Development
- Mobile App Development
- AI & Automation
- Team
- 10-49 people
- Rank 6
Bellevue firm that pairs strategy, experience design, software, hardware and AI engineering to take products from concept to launch.
No reviews yet
Bellevue, WA
- Product Design & Development
- Custom Software Development
- AI & Automation
- Team
- 250-999 people
- Rank 7
Vancouver, Washington software firm delivering product builds, custom business applications and web and mobile apps through its own global offices.
No reviews yet
Vancouver, WA
- Custom Software Development
- Mobile App Development
- Web Development
- Rank 8
Seattle software firm building custom business applications, mobile apps and system integrations, and modernizing and supporting existing software.
No reviews yet
Seattle, WA
- Custom Software Development
- Mobile App Development
- API & Integration Development
- Rank 9
Kirkland, Washington software firm building HIPAA-compliant healthcare systems, EHR integrations and AI products for health-tech companies.
No reviews yet
Kirkland, WA
- Custom Software Development
- API & Integration Development
- AI & Automation
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