The Best Mobile App Development Companies in The Emerald City

Looking for top mobile app development companies in Seattle?

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 Seattle. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.

List of the Best Seattle Mobile App Development Companies

  • 1

    Inventive Mobile

    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.

    Notable Project

    A global IT and investment firm had a tight deadline for creating both Android and iOS apps before an important convention. Inventive Mobile delivered both apps on time without sacrificing quality.

    “Inventive Mobile excelled at delivering mobile apps to our specifications on extremely tight timelines. They were creative and worked within tight budgets, making it possible for our teams to land additional customers in the market very quickly.” – Director of Product Management, Global IT and Investment Firm

    Former clients
    Intel
    Xerox
    Oracle
    Meijer
    Concordia Publishing House
    UCSF Medical Center
    $ $ $ $ $
    equalizer $10,000+
    group10 - 49 Employees
    place Seattle, WA
    4.9
    4.9
    9 Clutch reviews
  • 2

    Zazz

    Zazz is a Seattle-based mobile app development company founded in 2011. They have an additional office in San Francisco. Their team of approximately 50 employees serves clients of all sizes and industries. In addition to app development, they also specialize in enterprise app modernization and UX/UI design.

    Notable Project

    Zazz created iOS and Android apps that connect to a Bluetooth-enabled barbecue. Users can switch the product on and off, as well as control its temperature, from their phone. The team delivered a bug-free product and great designs.

    "Besides development, they also did the UX/UI of the app and designed our logo, as well." — Chief Product Officer, Startup

    Former clients
    Inclose
    Ideal Smart
    Sparehandz
    $ $ $ $ $
    equalizer $25,000+
    group10 - 49 Employees
    place Seattle, WA
    5.0
    5.0
    2 Clutch reviews
  • 3

    projekt202

    Projekt202 is a software development and marketing company based in Addison, Texas. They were founded in 2003 and have a team of 285 employees. They specialize in custom software development, UX/UI design, and mobile app development to improve their client’s customer and employee experiences. 

    Notable Project

    Projekt202 designed a commercial consumer platform for a banking startup. They conducted extensive research and used it to design several versions of the platform, including a proof-of-concept, which was then developed into a working product. The clients says that the product was positively received by their consumers and that the design is intuitive, transparent, and relatively free from bugs or other issues. 

    “Their ideas were unique and thought-provoking and centered around getting the product to market faster.” – VP of Product Management, Banking Startup 
     

    Former clients
    Capital One
    Samsung
    7-Eleven
    $ $ $ $ $
    equalizer

    Undisclosed

    group250 - 999 Employees
    place Seattle, WA
    5.0
    5.0
    1 Clutch review
    Awards

    100 fastest-growing privately-held companies in Dallas-Fort Worth (2011-2016) , Fast Tech Awards (2017)

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  • 4

    8ninths

    Founded in 2008, 8ninths is a Seattle-based augmented and virtual reality (AR/VR) solutions company. The team of 13 also provides mobile and web development, UI/UX design, and strategy.

    Notable Project

    A membership service for government contracts redesigned its website but realized it needed more help to boost traffic and present information in a more user-friendly way. They hired 8ninths to create a seamless user experience for the site.

    “We're thrilled with the solutions 8ninths developed and anticipate that they will save employee time, improve customer satisfaction, and increase revenue.” – Executive Director, Membership Service

    Former clients
    Microsoft
    Toyota
    Starbucks
    Disney
    Coca-Cola
    Amazon
    Hallmark
    $ $ $ $ $
    equalizer

    Undisclosed

    group10 - 49 Employees
    place Seattle, WA
    4.8
    4.8
    2 Clutch reviews
  • 5

    UpTop

    Founded in 2000, UpTop specializes in UI/UX design but also shines in web and mobile app development. Their team of 50+ are passionate about solving complex problems and increasing revenue for their clients.

    Notable Project

    UpTop recently completed a project for a data services provider. They needed help creating a consumer-facing portal. UpTop developed and designed the entire portal from frontend to backend.

    “They were clear, honest and set expectations fairly. They knew when to push back and ask us to think twice about a request. On the other hand, they were able to take pressure from us since we're still the customer.” – CTO, Data Services Provider

    Former clients
    Amazon
    Microsoft
    Disney
    Boeing
    Intel
    Samsung
    $ $ $ $ $
    equalizer $25,000+
    group10 - 49 Employees
    place Seattle, WA
    4.9
    4.9
    10 Clutch reviews
    Awards

    2016 Seattle Business Top 100 Companies to Work For , Washington’s Best Workplaces

  • 6

    Smashing Ideas

    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.

    Notable Project

    A news outlet commissioned Smashing Ideas to create apps for its weather stations. Smashing Ideas developed both tablet and smartphone apps.

    “When they’re coming up with the ideas, they’re phenomenal ideas, and they’re also reasonable and feasible ideas. That mix of creativity and always knowing what can be executed is where they’re strongest. Their ability to execute on the creative ideas that the team comes up with is what distinguishes them for me.” – Senior Manager, Newspaper Publishing Company

    Former clients
    Sony
    Microsoft
    Mattel
    General Electric
    Panasonic
    $ $ $ $ $
    equalizer

    Undisclosed

    group50 - 249 Employees
    place Seattle, WA
    5.0
    5.0
    1 Clutch review
    Awards

    Davey Awards: Gold and Silver 2015 , W3: Gold and Silver

  • 7

    WaferWire Cloud Technologies

    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.

    Notable Project

    WaferWire Cloud Technologies is providing third-party web development for an analytics company. They contributed rapid prototyping and UI development for several models and decision support spaces. They offer competitive rates and provide great customer value.

     "Their rates are very competitive and represent a good value for their customer." –Owner, Analytics Company

    Former clients
    Treasury Curve
    Jamaica's Forestry Department
    World Vision
    Gazprom
    Book Your Container
    $ $ $ $ $
    equalizer

    Undisclosed

    group50 - 249 Employees
    place Bellevue, WA
    5.0
    5.0
    2 Clutch reviews
  • 8

    Ministry of Product

    Ministry of Product is a web development company that was founded in 2005 and is headquartered in Seattle. Their team of 3 employees specializes in mobile app development, web development, and UX/UI design. They mostly work with companies in the business services, entertainment, and consumer products industries.

    Notable Project

    Ministry of Product worked for a dog sitter booking service where they designed a mobile app for iOS. They incorporated different functions for the app, including searching and messaging features for users. The design of the app impressed the client.

    "The design work especially has been very top-notch." – Co-Founder/Director or Software Development, Dog Sitter Booking Service

    Former clients
    EarthCorps
    CEDAR
    Blue Nile
    $ $ $ $ $
    equalizer

    Undisclosed

    group2 - 9 Employees
    place Seattle, WA
    4.8
    4.8
    2 Clutch reviews
  • 9

    Kelsus

    Kelsus has been providing clients with software engineering teams to small businesses in the education, business services, and consumer product service industries since 2008. With a team of 50 in offices around the Colorado, Buenos Aires, Duvall, and Argentina areas, they help clients publish content, social strategy, and software development.

    Notable Project

    Kelsus partnered with pet-owner social media company to design, create the application, and build an algorithm for a weekly competition to feature owners pets. The results were 20,000 users and over 30,000 pets on the platform with Kelsus app development.

    “I can’t say enough positive things about them. Rather than just building whatever we ask of them, Kelsus has been very helpful about leading us through the development process. As a self-funded startup, we don’t always know what we’re building, so they advise us on the most efficient ways to proceed.” – Co-Founder & CEO, ZooPix

    Former clients
    Sphero
    Equifax
    Zoopix
    DigitalTown
    Chatbunker
    Intel
    $ $ $ $ $
    equalizer $50,000+
    group10 - 49 Employees
    place Duvall, WA
    4.7
    4.7
    3 Clutch reviews
  • 10

    New Normal

    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.
     

    Notable Project

    New Normal provided design and development services for a gamification platform. The client needed to create the platform to increase sign-up for their airline client’s frequent flier program. New Normal created the platform, and integrated multiple features that the client wanted. After the company developed the platform, the airline received thousands of sign-ups, and the client launched more campaigns. 

    “With New Normal’s help, we were able to help the airlines get over 80,000 new sign-ups to its loyalty program in the month that contest ran. The success of this project allowed us to run two more similar campaigns for the client with New Normal as the software team.”

    — Director of Creative Services, Digital Marketing Agency
     

    Former clients
    Amazon
    Bill & Melinda Gates Foundation
    State of Washington
    $ $ $ $ $
    equalizer $10,000+
    group10 - 49 Employees
    place Seattle, WA
    5.0
    5.0
    2 Clutch reviews
  • 11
  • 12

    Y-Designs, Inc

    Founded in 2010, Y-Designs’ small but powerful team of 3 offers design and development for mobile apps, websites, and other digital products. Based in Seattle, the team serves local small businesses.

    Notable Project

    Y-Designs built a web application and iOS and Android apps for a tech startup. The client originally hired Y-Designs for their design expertise but was impressed with their engineering talent, efficiency, and amiability.

    “I can really say that Y-Designs can move the ball faster and harder than even a team of 30 engineers at a very large, well-established corporation. That’s  because they know so much about the technology landscape.” – CEO, Tech Startup

    Former clients
    Vetri Glass
    Seattleite Guide
    Content26
    Conlon Dart
    $ $ $ $ $
    equalizer $25,000+
    group2 - 9 Employees
    place Seattle, WA
    5.0
    5.0
    4 Clutch reviews
  • 13

    Flower Press Creative Studio, LLC

    A full-service digital design and development agency, Flower Press Creative Studio takes on mobile app, web, and custom software development projects. Founded in 2001, the small team of 6 is headquartered in Seattle and also has experience in UI/UX design.

    Notable Project

    A founder of a social meetup company needed help launching the business. Flower Press Creative Studio agreed to help, developing an iOS app and assisting with branding.

    “She was really good at taking my ideas and turning them into something usable. She’s easy to work with, as well as versatile. She has a way of remedying doubts clients might have about their ideas.” – Founder, Social Meetup App

    Former clients
    Nike
    Disney
    SurveyMonkey
    Lipton
    Southern Living
    $ $ $ $ $
    equalizer $5,000+
    group10 - 49 Employees
    place Medina, WA
    4.9
    4.9
    17 Clutch reviews
  • 14

    ITIRRA

    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. 

    Notable Project

    ITIRRA provides ongoing development services to a healthcare solutions company. The team worked on a product that would improve case management processes. Their honest feedback made the first version of the product a success.

    "Communication was great." – CEO, Healthcare Solutions Company

    Former clients
    Sports Aptitude
    ADURO
    Vitagramma
    AIDA Healthcare
    $ $ $ $ $
    equalizer $5,000+
    group10 - 49 Employees
    place Kirkland, WA
    5.0
    5.0
    1 Clutch review
  • 15

    Bonsai Media Group

    Bonsai Media Group is a full service internet marketing agency located in Seattle, Wash. Founded in 2006, Bonsai Media Group specializes in web design, web development, and social media marketing. Bonsai Media Group employs a team of around 35.

    Notable Project

    Bonsai Media Group worked with a restaurant chain seeking assistance with web design and social media marketing, specifically in creating a website for hosting the client's social media contest. Bonsai Media Group developed user credentials and improved the website's social media integration. The client was impressed by Bonsai Media Group's ability to drive measurable growth, including social media engagement, web traffic, and mobile app usage. 

    "We got great results from the work they did for us. Our social media growth was 12 percent Facebook fan growth, 20 percent Foursquare growth, and 6 percent Twitter growth. Our restaurant website growth had an 8 percent increase in traffic for the same period month prior." – Marketing Manager, Restaurant Chain 

    Former clients
    Amazon.com
    iSupport
    Plan Washington
    Pyramid Alehouse
    Velo Apartments
    Sammamish Mortgage
    $ $ $ $ $
    equalizer $25,000+
    group10 - 49 Employees
    place Seattle, WA
    4.7
    4.7
    12 Clutch reviews
  • 16

    Helpful Human

    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.

    Notable Project

    A tech startup hired Helpful Human for their design expertise. They conducted background research, made suggestions for a prototype test, and will assist with future phases. The client prides Helpful Human on being responsive. 

    "Their experience and expertise played a major part and they were thoughtful and insightful." – Owner, Technology Startup 

    Former clients
    Rudy's
    naturewise
    Elm Coffee Roasters
    Holland America Line
    $ $ $ $ $
    equalizer $10,000+
    group10 - 49 Employees
    place Seattle, WA
    5.0
    5.0
    2 Clutch reviews
  • 17

    Rainfall

    Rainfall is a creative studio and design agency headquartered in Seattle, with an additional office in New York City. Founded in 2016, the company has a team of 4 people who specialize in UX/UI design, branding, and web design. Their clients are mostly small businesses, and they work with some mid-market businesses. The businesses they work with are in industries including the arts, entertainment & music, consumer products & services, and hospitality & leisure industries.

    Notable Project

    Rainfall design the UX and UI for an aftermarket automotive website. Rainfall developed the frontend design of the client's cloud-based web app. They also designed the client’s logo, emails, and marketing materials. After working with Rainfall, the client saw an increase in customer engagement, and they could work more efficiently. 

    “We saw about a 25–30% increase in customer engagement with our platform and its features once we introduced the new designs. With their help, we were also able to double our development velocity so that we could launch new features more quickly.” — Former Executive, Aftermarket Automotive Website
     

    Former clients
    The Metropolitan Museum of Art
    Chase
    Brinks Home Security
    $ $ $ $ $
    equalizer $50,000+
    group2 - 9 Employees
    place Seattle, WA
    5.0
    5.0
    3 Clutch reviews
  • 18

    Grinev Software

    Grinev Software is a development company based in Federal Way, Wash. Their team was founded in 2007 and has around 10 employees. They primarily provide mobile app, web, and e-commerce development. 

    Notable Project

    Grinev Software developed the frontend of an AWS-hosted sales firm's site. They created the tools and handled necessary customizations. The delivered work was a success and the project was productive. 

    "They were incredibly fun to work with. Life's too short to not work with people you like and respect." – Managing Director, Sales Firm

    Former clients
    Salesfolks, Inc.
    True Virtual Tours
    Syzeit
    FromTo.City
    TechService, LTD
    $ $ $ $ $
    equalizer $1,000+
    group2 - 9 Employees
    place Federal Way, WA
    5.0
    5.0
    1 Clutch review
  • 19

    CASoft Seattle

    CASoft Seattle is a web design, development, and marketing company located in Kirkland, Wash. Founded in 2017, CASoft Seattle has a team of three employees that not only specialize in web development but also mobile app and custom software development. Their marketing expertise spans SEO, PPC, and branding. They primarily work with small businesses. 

    Notable Project

    CASoft Seattle built a platform for a social media streaming app. The product emphasized group navigation and privacy. For example, users who uploaded a video to the platform could control who saw the content. After working with a development team that could not complete the project, the social media platform hired CASoft Seattle. They built a custom iOS platform that included the client's desired featured and addressed coding issues in the backend.

    "After working with some of the highest rated development firms, I appreciate how CASoft Seattle does business. Their ability to communicate and work within a partnership is second to none. They had a lot of issues working with the original code but were ultimately able to succeed where other companies failed." – Founder and CEO, Social Media Streaming App

    Former clients
    Footlogix
    Great Plains College
    Modern Metals
    Mobile Veterinary Mission
    $ $ $ $ $
    equalizer $1,000+
    group2 - 9 Employees
    place Kirkland, WA
    5.0
    5.0
    3 Clutch reviews
  • 20

    Lunarbyte.io

    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.  

    Notable Project

    Lunarbyte.io developed payment systems, mailing solutions, and deliverability functionality for a flight deals platform. They also provided support with WordPress. The client's business more than doubled as a result. 

    "Everything they do is delivered well, and they aren’t stressed about the production process. Those are qualities you can’t buy." – COO, Flight Deals Platform

    Former clients
    Preflight Mitigator
    Dollar Flight Club
    Storytellers for Change LLC
    $ $ $ $ $
    equalizer $10,000+
    group2 - 9 Employees
    place Seattle, WA
    5.0
    5.0
    3 Clutch reviews
  • 21

    SWECKER

    Founded in 2003, Swecker is a Seattle-based web development agency that serves small and mid-market businesses. In addition to web development, the team of fewer than 10 also offers mobile app and custom software development and design.

    Notable Project

    When a wine company noticed their online presence dwindling, they hired Swecker. Swecker developed and modernized the client’s Drupal8 and WordPress websites, and helped troubleshoot their content management system (CMS) issues.

    “Everything is done in a timely manner. They're always super communicative, and they do quality work.” – Creative Coordinator, Wine Company

    Former clients
    Microsoft
    Farmers Insurance
    The Pike Place Market
    Canoe Ridge Vineyard
    Mackie
    $ $ $ $ $
    equalizer $5,000+
    group2 - 9 Employees
    place Seattle, WA
    5.0
    5.0
    2 Clutch reviews
    Awards

    Top 10 Enterprise Web Design Companies – 10bestdesign.com

  • 22

    TECLA

    TECLA is a staff augmentation firm with offices in Seattle, Mexico, Lima, Peru, and various other South American countries. Since 2012, their small team of around 10 specializes in custom software, web, and e-commerce development.  

    Notable Project

    TECLA built an e-commerce platform for a retail company. They took pre-existing designs and API specs and implemented them into the solution's frontend. The client was pleased with how TECLA's work reflected the requirements and said that it exceeded expectations.

    The work was primarily on the frontend and the agency met all of the client's expectations. 

    "Tecla Labs always puts up with it, makes the changes, and delivers how I want it." —Founder, Retail Company 

    Former clients
    Pepsi
    Witlee.com
    BMW
    Miller
    $ $ $ $ $
    equalizer

    Undisclosed

    group10 - 49 Employees
    place Seattle, WA
    4.8
    4.8
    5 Clutch reviews
  • 23

    Kind+Human

    Founded in 2018, Kind+Human is a small development firm. Their team is based in Los Angeles, with an additional office in San Francisco and Seattle. They focus on custom software, web, and mobile app development.

    Notable Project

    Kind+Human provided UI/UX designs for an automotive digital company. The team created custom and modernized layouts and flows.

    "Their creativity stands out." – CTO, Automotive Digital Company

    Former clients
    Dataship
    Munch Citi
    Woolly Labs
    $ $ $ $ $
    equalizer $10,000+
    group10 - 49 Employees
    place Seattle, WA
    5.0
    5.0
    3 Clutch reviews
  • 24

    Purely CRM

    Purely CRM is a Microsoft Dynamics 365 CRM firm based in Vancouver. Founded in 2014, their team of around 14 employees provides CRM consulting, cloud consulting, and custom software development services.

    Notable Project

    The team transitioned a development company to a Dynamic 365 in Azure Cloud environment and continues to provide consulting services as needed. Their considerable level of expertise in cloud consulting ensured a seamless, predictable engagement that met all requirements.

    Former clients
    MAINT S.A.
    TEXCAN
    XYPEX
    $ $ $ $ $
    equalizer $75,000+
    group10 - 49 Employees
    place Seattle, WA, WA
    5.0
    5.0
    1 Clutch review
  • 25

    JoDi Services

    JoDi Services is a tech solutions provider based in Bothell, Wash. Their team of less than 10 serves small business, midmarket, and enterprise clients across IT and other industries. Services include web, mobile app, e-commerce, and more software development.

    Notable Project

    JoDi Services built the app for a startup. The app was built for iOS and android and allows the user to manage functions' attendance, RSVPs, and more.

    "Services went beyond my expectations and made an app that meet industry standards. The final app didn't have any bugs or flaws." - Founder, Startup

    Former clients
    FunkiCases
    Tshirts Are Us
    Dahmein
    My Home Answers
    $ $ $ $ $
    equalizer $1,000+
    group2 - 9 Employees
    place Bothell, WA
    5.0
    5.0
    1 Clutch review
  • 26

    Seattle New Media

    Seattle New Media is a website development agency based in Seattle. The agency, founded in 2006, has a team of less than ten that provides, among others, video production, web development, and mobile app development services to various companies and clients. 

    Notable Project

    A digital marketing company outsourced to Seattle New Media the development of an interactive and user-friendly website for one of its customers. Seattle New Media completed the project on time and met all expectations in terms of quality.

    "After the website had been optimised, over the last 2 months the traffic has increased by 10%." - Assistant Manager - SEO, Digital Marketing Company

    Former clients
    Legacy Homes
    Location Lincoln
    Foundry by the Park
    Microsoft Learning platform
    $ $ $ $ $
    equalizer $1,000+
    group2 - 9 Employees
    place Seattle, WA
    5.0
    5.0
    1 Clutch review
Tell us about your project
NEED HELP SELECTING A COMPANY?

Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

TELL US ABOUT YOUR PROJECT