Top 100 Mobile App Developers in Washington
The Best of December 2025Looking for a top mobile app development company in Washington?
Building a mobile app is expensive. In fact, it can cost $10,000 to $150,000, unless you want an out-of-the-box solution with a DIY app builder. So, choosing the right app developer is important because it can save you time and money and result in an app that makes your business stand out.
As you begin the process of hiring an app development company, remember to define the type of app you want before starting conversations with developers. How complex your app idea is will determine your budget and the skill level you need in an app developer. Then, once conversations begin, ask for portfolio items, reviews, and references. Be sure to bring up timeline, too, so you align on expectations.
Overall, with about 90% of time on mobile spent in apps, investing in a mobile app for your business may help attract customers and get your brand in front of more people.
To assist you in your search for a partner, we’ve compiled this list of the top mobile app developers in Washington. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best Washington Mobile App Development Companies
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1$100,000+10 - 49 employeesVancouver, WARead More
A development company founded in 2005, Infinite Red, Inc. is based in Vancouver, Wash. Their team of fewer than 50 works in additional offices in San Rafael, Calif., servicing small to midmarket businesses. They offer web and mobile app development as well as web and UX/UI design services.
Clients
MicrosoftIndustries
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2$25,000+10 - 49 employeesSeattle, WARead More
UpTop is a small UX company. Founded in 2000, the team offers UX/UI Design, Custom Software Development, and Mobile App Development. The firm is based in Seattle, Washington.
Clients
Amazon F5 SAP Concur LogitixIndustries
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3$10,000+250 - 999 employeesBellevue, WARead More
Affirma Consulting is a custom software development firm established in 2001. Their midsize team is in Bellevue, Washington; Ahmedabad, India; Dublin, Ireland and Fayetteville, Arkansas. The firm focuses on Custom Software Development, AI Consulting, Generative AI, Mobile App Development, and more.
Clients
MicrosoftIndustries
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4$25,000+2 - 9 employeesSeattle, WARead More
Lunarbyte.io is a development agency based in Seattle. Since 2019, the 3-person team has built websites, custom software, and mobile apps for predominantly small businesses.
Clients
DDM ImportsIndustries
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5$25,000+10 - 49 employeesMedina, WAFlower Press Interactive is a small user experience agency launched in 2001. Their team offers UX/UI Design, Mobile App Development, Custom Software Development, Web Development, and more. The company is located in Medina, Washington.Read More
Clients
Insurance LoungeIndustries
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6$1,000+10 - 49 employeesSEATTLE, WARead More
PubGENIUS is an app development firm. They are based in SEATTLE, Washington and have a small team. The firm offers mobile app development, custom software development, and web development.
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7$1,000+10 - 49 employeesWaitsburg, WAWallaWallaStudio is an user experience agency based in Kyiv, Ukraine and Walla Walla, Washington. They focus on ux/ui design, product design, graphic design, packaging design, and more and were established in 2018.Read More
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8$10,000+2 - 9 employeesSeattle, WAMontana Banana Web & Mobile Development + Design is an Ecommerce Marketing company based in Seattle, Washington. The small team offers Ecommerce Marketing, Conversion Optimization, Web Design, Web Development, and more and was founded in 1996.Read More
Clients
ESS Eye ProIndustries
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9Undisclosed50 - 249 employeesSeattle, WARead More
Smashing Ideas is a mobile app development company that offers an array of services such as UI/UX design, web design, data strategy and analytics, and quality assurance and testing. Since its founding in 1996, Smashing Ideas has grown to over 50 employees who are passionate, curious, and creative.
Clients
ReachNow -
10$5,000+10 - 49 employeesIssaquah, WARead More
Since its founding in 2010, Inventive Mobile has been dedicated to mobile app development. Their small but expert team completed over 30 projects for both Android and iOS with over 10 million downloads.
Clients
University of WashingtonIndustries
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11$5,000+50 - 249 employeesSeattle, WAHeadquartered in Seattle, Washington; Yerevan, Armenia and Almaty, Kazakhstan, Innova is a big data analytics company. The midsize agency was established in 2021. Their services include BI & big data consulting & SI, cloud consulting & SI, IT managed services, Custom Software Development, and more.Read More
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12Undisclosed10 - 49 employeesVancouver, WARead More
Located in Portland, OR, Parthenon Software Group and its team of nearly 40 develop web and mobile apps. Founded in 2006, the company also has experience in custom software development.
Clients
Intel -
13Undisclosed50 - 249 employeesBellevue, WARead More
Founded in 2010, WaferWire Cloud Technologies is located in Bellevue, Wash. Their team of about 50 employees provides web design, graphic design, and ERP consulting and SI services.
Clients
Treasury Curve -
14$50,000+10 - 49 employeesSeattle, WARead More
New Normal, founded in 2012, is a software services agency headquartered in Seattle. Their company consists of a team of 22 people who specialize in web development, mobile app development, and e-commerce development. While they mostly work with mid-market businesses, they also work with enterprise and small businesses. The businesses they work with are mostly in the advertising & marketing, e-commerce, and financial services industries.
Clients
AmazonIndustries
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15$5,000+10 - 49 employeesSeattle, WALaunched in 2017, Fenyx Studio is a mobile app development company. The small team specializes in Mobile App Development and Web Development.Read More
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16$1,000+10 - 49 employeesVancouver, WARead More
Based in Vancouver, Washington, DreamsToLife, LLC is an e-commerce development company. The small company was founded in 2021. Their team focuses on e-commerce development, web development, custom software development, direct marketing, and more.
Industries
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17$5,000+10 - 49 employeesBellevue, WARead More
Scalex Technology Solutions is a digital agency founded in Bellevue, Wash. in 2015 with fewer than 50 employees. They specialize in cloud consulting, mobile app development, and custom software development for clients in the fields of education, financial, and IT services.
Clients
World VisionIndustries
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18$1,000+250 - 999 employeesBellevue, WARead More
E-commerce development firm Neighborsoft.team was established in 2009. Their midsize team is headquartered in Bellevue, Washington. Neighborsoft.team provides e-commerce development, web development, custom software development, mobile app development, and more.
Industries
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19$1,000+10 - 49 employeesNewcastle, WAHyperBeans is a web development firm headquartered in Newcastle, Washington. The agency offers Web Development, Mobile App Development, Custom Software Development, Enterprise App Modernization, and more and has a small team.The agency was launched in 2011.Read More
Industries
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20$5,000+50 - 249 employeesSeattle, WAINFINITE ART SOLUTIONS is a graphic design agency. Established in 2014, the firm is located in Seattle, Washington. Their services include Graphic Design and Mobile App Development.Read More
Industries
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21Undisclosed50 - 249 employeesSeattle, WANTSprint LLC is a software development company. They are located in Seattle, Washington and have midsize team of experts. Their services include Custom Software Development and Web Development.Read More
Industries
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22$25,000+2 - 9 employeesVancouver, WACascadian Software is a small Vancouver, Washington-based software development company. They offer Custom Software Development, Web Development, Mobile App Development, UX/UI Design, and more and were established in 2022.Read More
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23$5,000+10 - 49 employeesKirkland, WARead More
Based in Kirkland, Wash., ITIRRA is a boutique technology consulting firm. Since 2008, their team of 12 has been specializing in web development, mobile app development, IT strategy consulting, and more.
Clients
Sports Aptitude -
24$1,000+2 - 9 employeesMarysville, WARatynski Digital is a small SEO company based in Marysville, Washington. Their services include Search Engine Optimization, Web Design, Custom Software Development, Sales Outsourcing, and more.Read More
Clients
Ideal Weight Loss ClinicIndustries
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25$1,000+10 - 49 employeesSeattle, WATekByt LLC is a web design agency established in 2024. They are in Seattle, Washington and have a small team. Their services include Web Design, UX/UI Design, Custom Software Development, Web Development, and more.Read More
Industries
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26$25,000+2 - 9 employeesBainbridge Island, WABased in Bainbridge Island, Washington, Apsis Labs is a small web design company. They offer Web Design, UX/UI Design, Web Development, Mobile App Development, and more and were launched in 2014.Read More
Industries
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27$5,000+50 - 249 employeesBellevue, WAMidsize mobile application development firm Tech Pathway, is in Jaipur, India and Bellevue, Washington. Their services include Mobile App Development and Web Development.Read More
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28$5,000+2 - 9 employeesBurien, WASandcastle Web Design and Development is a software development company established in 1998. The team specializes in Custom Software Development and Mobile App Development.Read More
Clients
Aviation Supplies & Academics Cevala / Brandvia Allegiant Commercial Asset Services GroupIndustries
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29$10,000+10 - 49 employeesSeattle, WARead More
Helpful Human is a development agency based in Seattle. Since 2013, their team of 15 has been specializing in web design and development, mobile app development, and UX/UI design. They work primarily with small businesses in the information services and business services industries.
Clients
Rudy'sIndustries
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30Undisclosed10 - 49 employeesSpokane, WALimelyte Technology Group is a custom software development company and application development firm. They were launched in 1999 and provide Custom Software Development and Mobile App Development.Read More
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