Top 100 Mobile App Developers in Seattle
The Best of December 2025Looking for a top mobile app development company in Seattle?
Your mobile app is an extension of your branding. Quality assurance is paramount when building a product representing your brand's identity.
To improve your success rate, find the right partner through this list of the top mobile app developers in Seattle.
List of the Best Seattle Mobile App Development Companies
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1$1,000+10 - 49 employeesSeattle, WAChopDawg.com is an application development firm. Their small team is located in Philadelphia, Pennsylvania; Smyrna, Georgia; Seattle, Washington and Boston, Massachusetts. The company specializes in Mobile App Development and Web Development. The company was launched in 2009.Read More
Clients
Alpha Paw Big Brothers Big Sisters Choice Home Warranty City of Peachtree Corners, GeorgiaIndustries
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2$100,000+250 - 999 employeesSeattle, WAMatellio is a San Jose, California-based mobile application development firm. The midsize team provides Mobile App Development, IT staff augmentation, Web Development, IoT development, and more and was established in 2014.Read More
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StartupsIndustries
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3$10,000+50 - 249 employeesSeattle, WAMobile app development firm 9series Inc is headquartered in Bellevue, Washington; Ahmedabad, India and Seattle, Washington. They focus on Mobile App Development, Artificial Intelligence, Web Development, and Low/No Code Development and were founded in 2014.Read More
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4$50,000+250 - 999 employeesKyiv, UkraineLocated in Tallinn, Estonia; Kharkiv, Ukraine; Stuttgart, Germany and London, England, Jelvix is a software development company. The midsize agency was established in 2011. Their services include Custom Software Development, Mobile App Development, Artificial Intelligence, and cloud consulting & SI.Read More
Clients
Tiber Capital GroupIndustries
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5$5,000+10 - 49 employeesStockholm, SwedenRead More
Slashdev is a small custom software development firm based in Winter Park, Florida; London, England; Stockholm, Sweden and San Diego, California. They specialize in Custom Software Development, Web Development, Mobile App Development, IT staff augmentation, and more and were founded in 2020.
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6$5,000+50 - 249 employeesSeattle, WAWeb design agency UPQODE was launched in 2015. They are based in Nashville, Tennessee; New York, New York; Tampa, Florida and Seattle, Washington and have a midsize team. UPQODE focuses on Web Design, Web Development, UX/UI Design, Custom Software Development, and more.Read More
Clients
Gracenote - Entertainment ProvidersIndustries
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7$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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8$25,000+50 - 249 employeesSeattle, WAMobcoder, an IT staff augmentation company, is located in Seattle, Washington; Cobham, England; Ghaziabad, India and Burnaby, Canada. The midsize company was launched in 2014. Their services include IT staff augmentation, Artificial Intelligence, UX/UI Design, BI & big data consulting & SI, and more.Read More
Clients
General millsIndustries
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9$50,000+50 - 249 employeesSeattle, WAThirstySprout is an IT staff augmentation company. They are based in Seattle, Washington; San Francisco, California; Austin, Texas and Buenos Aires, Argentina and have a midsize team. The company provides IT staff augmentation, Generative AI, Custom Software Development, Web Development, and more.Read More
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Rover.comIndustries
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10Undisclosed1,000 - 9,999 employeesL'viv, UkraineRoom 8 Group, an app development firm, was founded in 2011. They specializes in Mobile App Development and Custom Software Development.Read More
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11$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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12$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.
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DDM ImportsIndustries
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13$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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14$25,000+10 - 49 employeesDallas, TXLaunched in 2015, Groove Jones is an AR/VR development company. Their small team is based in Dallas, Texas; Minneapolis, Minnesota; West Hollywood, California and Chicago, Illinois. Their team provides AR/VR development, Artificial Intelligence, Web Development, Mobile App Development, and more.Read More
Clients
3M AT&T American Heart Associaiton Charles SchwabIndustries
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15$10,000+50 - 249 employeesKirkland, WARead More
Founded in 2013, AccelOne is an artificial intelligence firm. They are headquartered in Kirkland, Washington; Buenos Aires, Argentina and Mission Viejo, California and have a midsize team. The firm offers Artificial Intelligence, Generative AI, IT managed services, IT staff augmentation, and more.
Clients
XapoIndustries
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16$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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17Undisclosed50 - 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 -
18$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.
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University of WashingtonIndustries
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19$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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20Undisclosed50 - 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 -
21$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.
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AmazonIndustries
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22$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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23$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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24$25,000+2 - 9 employeesSeattle, WACodble is a Seattle, Washington-based application development firm. Founded in 2020, the small team offers Mobile App Development, Custom Software Development, Web Development, IT strategy consulting, and more.Read More
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25$25,000+10,000+ employeesKraków, PolandPersistent Systems is a data analytics company. Established in 1990, the large agency is headquartered in Pune, India; Santa Clara, California; Paris, France and Lyne, England. Their services include BI & big data consulting & SI, cloud consulting & SI, Cybersecurity, Custom Software Development, and more.Read More
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26$5,000+10,000+ employeesSan Francisco, CAGlobant is a large web development firm. They offer Web Development and Custom Software Development and were founded in 2003.Read More
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27$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.
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28$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
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29$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
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30Undisclosed50 - 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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