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Top iOS App Development Companies in Seattle, WA

We've found the best
iOS App Development Companies
 for you.

Looking for the best iOS app development company in Seattle? UpCity compiles authentic reviews, company descriptions, project examples, and more into a list for you to review. Feel confident you're finding the top provider for your business.

UpCity offers objective, independent research and verified user reviews. We earn compensation from some providers who sign up for sponsored profiles. Learn more about our trusted providers.

Location
Any/All Available
Provider's minimum per-project cost
Any/All Available
Up to $10,000
Up to $25,000
Provider's minimum retainer cost
Any/All Available
Up to $500, monthly
Up to $5,000, monthly
Industry Expertise
Any/All Available
Attorneys
Business Services
Construction
E-Commerce
Entertainment
Finance
Food/Beverage
Industrial
SaaS
Startups
Businesses provider works with
Any/All Available
Small Businesses: 1–250 employees
Medium Businesses: 251–999 employees
Enterprise Businesses: 1000+ employees
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Company Name
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5 Provider(s)Last Updated: October 28, 2025
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Montana Banana designs and develops Internet strategies for corporate, e-commerce and entertainment based clients. We have offices in Seattle, WA and Los Angeles, CA but design products for clients around the world.
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Businesses provider works with
Works with
Small, Medium
Provider's minimum per-project cost
Per-project minimum
$5,000 or more
Provider's minimum retainer cost
Retainer minimum
Less than $500, monthly
Provider updated information on 7/17/2024
Services Offered
WooCommerce DevelopmentAndroid App DevelopmentiOS App DevelopmentWordPress DevelopmentSoftware DevelopmentView All Services (13)
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Industry(s):
SaaS | E-Commerce | Business Services
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Watson Creative

Seattle, WA, US + 3 More Locations
5.0 | 30 reviews
Last reviewed on 8/21/2024
Our sights are set on strategy, design, storytelling, and creating an impact. Lifestyle brands to tech, startups to venture capitalists, professional services to professional sports—we dig down to build up.
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Businesses provider works with
Works with
Small, Medium, Enterprise
Provider's minimum per-project cost
Per-project minimum
$10,000 or more
Provider's minimum retainer cost
Retainer minimum
$2,000 or more, monthly
Provider updated information on 9/21/2025
Services Offered
Android App DevelopmentiOS App DevelopmentWordPress DevelopmentShopify DevelopmentWebsite DevelopmentView All Services (32)
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Jeff Maggioncalda — CEO
We had the pleasure of collaborating with watson creative, and i must say, their expertise in branding, web development, and SEO services has been a game changer for our educational company. Their team of talented professionals took a genuine interest in understanding our unique needs and goals, delivering a tailored solution that exceeded our expectations. Their branding expertise helped us establish a strong visual identity, while their web development skills created an engaging and user-friendly online presence. The SEO significantly improved our online visibility, driving more traffic and engagement.
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Sandcastle Web Design & Development

Seattle, WA, US See Location
5.0 | 2 reviews
Last reviewed on 2/29/2024
Sandcastle Web Design & Development is a full-service web design & development agency with a wealth of technical experience and a personalized approach to each project. We have 2+ decades of experience in web design, e-commerce, custom application development, mobile apps and digital marketing.
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Businesses provider works with
Works with
Small, Medium
Provider's minimum per-project cost
Per-project minimum
$5,000 or more
Provider's minimum retainer cost
Retainer minimum
Less than $500, monthly
Provider updated information on 3/5/2024
Services Offered
iOS App DevelopmentAndroid App DevelopmentMagento DevelopmentWebsite DevelopmentMobile App DevelopmentView All Services (7)
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Tim Fry — Founder
I have been working with Sandcastle since 2015. They have been an excellent partner in the development, management and ongoing refinement of a mobile app platform - including the native app as well as the admin tool used to manage it. The entire Sandcastle team are knowledgeable, responsive and generally a true pleasure to work with.
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We assist worldwide businesses to design and develop exceptional digital solutions that provide a consistent user experience throughout all advanced platforms and devices.
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Services Offered
iOS App DevelopmentMobile App Development
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JCMobTech

Seattle, WA, US See Location
IF YOUR PLANS DON’T INCLUDE MOBILE APP YOUR PLANS ARE NOT FINISHED
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Services Offered
iOS App Development
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