Find the top mobile app development companies in Washington that create high-performing and user-friendly apps to help businesses drive conversions. Use our practical tool to filter them by cost, team size and client reviews.
Organic rankings are determined by five factors: top services, reviews, portfolio, awards/press, and team expertise. Sponsored listings pay for a placement that appears above organic positions. Sponsorship does not affect star ratings or review content - read more on our methodology page.

eSEOspace
VerifiedVerified by the DesignRush team for authenticity and credibility.Award WinnerRecipient of a Best Design Award for outstanding work.Custom Website Design Company. Local US-based team! We Preserve & Optimize your SEO in the Process
Services We Offer: Software, Web Applications. We have 15+ years of experience designing and developing websites and software from scratch. Our background and emphasis in behavior science allows us to creatively design websites and software systems to convert. Call us at: (916) 866-7893 for a quote!...
Top Services:
- Web Design
- Web Development
- WordPress Website Design
- eCommerce Development
- SEO
- Show more
- Location
- Vancouver, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $100/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 32 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountseSEOspace Services
Data sourced from the agency's DesignRush profileExecutive Partners Atlantic Partners Corp Canyon Plastics J Allen Fabrics onePRgroup The Sleep Nest EdgeCTP Consultants in Corporate Innovation CalMuni Advisors Avitasen
eSEOspace Reviews & Testimonials

Web Design Review from Muriell Carlisle, LMHC, RAS, C.H.T.
I just want to express my deepest gratitude for all of your help. I can't tell you enough how much I LOVE the website. I think it's so beautiful, professional and elegant. I think it's one of the best therapist's website[s] on the market. :) Thanks to Jeanette and [the] rest of the team for their creativity and neat work and Irina for her incredible knowledge about SEO and resources! You guys rock! (Verified via email)

Web Design Review from Alyssa Brenke
Specifically, working with Ben was amazing! He was incredibly responsive and answered all my questions throughout the process of updating our website. Our original site was built roughly a decade ago (or longer) so we were in need of some streamlining and modernization. The team did just that and quickly! The first iteration was spot on for what we were looking for. Not to mention, they were able to launch quickly and without any interruption to our daily operations. Would 100% recommend [it]!
Web Design Review from George Shvaya
Irina and Ben from [eSEOspace] were a dream to work with! Not only did they turn[...]around work quickly, but their attention to detail is fantastic, as is their regular communication. I will definitely be reaching out to [eSEOspace] again in the future with more work! (Verified via email)
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsAt Mobcoder AI, certified engineers and data scientists help you identify high-ROI AI use cases and operationalize them at scale. With 150+ deployments, CMMI Level 3 certification and 12+ years of experience, we build AI solutions governed by design and model-agnostic frameworks...
Top Services:
- Mobile App Development
- AI Development
- Software Development
- Web Development
- VR/AR
- Show more
- Location
- Seattle, Washington
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $55/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 14 Projects Listed

Design In DC
VerifiedVerified by the DesignRush team for authenticity and credibility.A Digital Agency For The Future
Design in DC engineers native and cross-platform apps that power businesses through prototyping, UI/UX design, m-commerce development, backend API development, QA, App Store submission, and optimization. Its impressive client portfolio includes Under Armour, the World Bank, and Virginia Tech...
Top Services:
- Web Development
- Web Design
- UI/UX Design
- Video Production
- Logo Design
- Show more
- Location
- Seattle, Washington
- Number of Employees
- 50 - 99
- Average Hourly Rate
- $160/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 12 Projects Listed
Data sourced from the agency's DesignRush profile, its website, and other relevant accountsDesign In DC Services
Data sourced from the agency's DesignRush profileConsumer Bankers Association Examit Summit Ridge Energy JFL Consulting Lateenz Solar Landscape Warfel Construction CiviClick Priovant Therapeutics Hilton
Design In DC Reviews & Testimonials

Web Design Review from Mackenzie Shriner
I contracted design in DC to build me a custom website. they were accommodating of my budget, very responsive, and gave good insight on layout, content and design. the process was very straightforward and the final product is great!

Web Design Review from Jo Maney
DDC has been an excellent partner since we engaged with them in 2023. The DDC team worked with us to completely redesign our website and work to provide ongoing digital marketing services. The DDC team has been responsive, proactive, and thorough with their work. They are also very transparent about how they operate and how much time special projects will require. We have referred DDC to several clients and partners thanks to their outstanding process and product. DDC is a very professional, creative, and well-organized team.

Web Design Review from Sapna Doshi, Ph.D.
My experience working with Design in DC was incredible. Everyone was friendly, approachable, and seemed to genuinely care about helping create the best possible website for my business. They were also invested in making sure the process was one in which I enjoyed and felt taken care of. The regular meetings made me feel like I was a priority and that progress was continually being made. I so appreciated the attention to detail in regards to the user experience. The collaboration in understanding my wishes and desires for the website and user experience was met with patience and paying attention to detail on my behalf. Not only were they taking my suggestions but offering their own to help me maximize the potential of my website. The design and functionality is more than what I could have imagined. I know, undoubtedly, that the work that Design in DC did for me will help my business grow. After wasting money in years past on website designers, I was worried I'd be doing hte same here. I was wrong. I don't think I'll ever need to search for another website designer group again. I would recommend this group to anyone I know. Thank you, Design in DC! It was an absolute pleasure working with all of you!
Reviews verified by DesignRush and sourced from the agency's profile View All ReviewsFrom UX design to custom development and everything in between; CodeBru is your partner for digital growth...
Top Services:
- UI/UX Design
- eCommerce Development
- WordPress Website Design
- Web Development
- Web Design
- Show more
- Location
- Seattle, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $105/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 4 Projects Listed
Serbyte Web Design & Development builds custom websites that function as growth systems, combining web design, Next.js development, SEO, analytics, lead capture, and automation to help businesses turn traffic into leads and sales...
Top Services:
- Web Design
- SEO
- Web Development
- Software Development
- UI/UX Design
- Show more
- Location
- Kirkland, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $75/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 6 Projects Listed
We provide fractional CTO services backed by a senior product and engineering team...
Top Services:
- Mobile App Development
- Web Design
- eCommerce Development
- Software Development
- AI Development
- Show more
- Location
- Federal Way, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $130/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 2 Projects Listed
Sandcastle is a full-service web design and development company specializing in e-commerce, custom application development, mobile technologies, hosting and maintenance. Our capabilities focus on creating platforms tailored to meet the specific needs of your business. These include third-party integrations...
Top Services:
- eCommerce Development
- Web Development
- Mobile App Development
- Web Design
- Software Development
- Show more
- Location
- Burien, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $125/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 9 Projects Listed
We are Ravenna. A website design and development firm in Seattle, WA. We know design and development like the back of our hand but to be honest, so does everybody else.What makes us different is our approach at Ravenna, we use our ears as much as our keyboards. Listening is the key to making sure your...
Top Services:
- Web Development
- Mobile App Development
- Design Services
- Web Design
- Branding
- Show more
- Location
- Lynnwood, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $150/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 3 Projects Listed
At VAO, over 80% of our business comes from our current clients' referrals...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- Location
- Seattle, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $10,000 - $25,000
At DigitalMara, we are a company of high-qualified tech professionals with Estonian roots, specializing in top-notch IT solutions for startups, small/medium businesses, and enterprise companies. Our engineers have a wide range of experience with technologies and domains, including Java, Python, NodeJS, .NET...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- IT Services
- Show more
- Location
- Bellingham, Washington
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $10,000 - $25,000
At Onetree, we are a technology services and consulting company that leverages our expertise and knowledge in software development and UI/UX design to assist clients across a wide range of industries in more than 10 countries. Our goal is to provide high-quality solutions that help our clients achieve their...
Top Services:
- Mobile App Development
- AI Development
- Software Development
- IoT
- UI/UX Design
- Show more
- Location
- Kirkland, Washington
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $99/hr
- Minimal Budget
- $10,000 - $25,000
We support entrepreneurs and companies as they reach a global audience with amazing digital products...
Top Services:
- Mobile App Development
- Software Development
- Web Development
- UI/UX Design
- Show more
- Location
- Seattle, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $49/hr
- Minimal Budget
- $10,000 - $25,000
Digital Awesome is a reliable and comprehensive mobile app development company that has been dedicated to serving its clients since 2014. Our focus is on building long-term partnerships with our clients, making us a trusted partner that you can rely on throughout the entire lifespan of your app...
Top Services:
- Mobile App Development
- Web Development
- Location
- Airway Heights, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $149/hr
- Minimal Budget
- $10,000 - $25,000
At our core, we specialize in planning, designing, and developing bespoke mobile and web products that drive measurable business outcomes. Our team is well-versed in all aspects of the software development process, from strategic planning and innovative user-experience design to development, pre-launch...
Top Services:
- UI/UX Design
- Mobile App Development
- Web Development
- Software Development
- Web Design
- Show more
- Location
- Seattle, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $99/hr
- Minimal Budget
- $10,000 - $25,000
SolDevelo is a dynamic and innovative IT company that delivers high-quality software solutions to clients worldwide. Since our establishment in 2009, we have successfully completed over 280 projects in 20 locations, making us a trusted partner for tackling modern world challenges. With a team of nearly 80...
Top Services:
- Software Development
- Mobile App Development
- Web Development
- UI/UX Design
- Cloud Consulting
- Show more
- Location
- Seattle, Washington
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $99/hr
- Minimal Budget
- $10,000 - $25,000
Flower Press Interactive designs and builds websites, apps, and platforms. We take early ideas and bring them into a user-validated, production-ready state. From marketing websites to internal systems, we turn complex problems into products worth building...
Top Services:
- Web Design
- UI/UX Design
- Web Development
- Software Development
- Mobile App Development
- Show more
- Location
- Medina, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $165/hr
- Minimal Budget
- $10,000 - $25,000
We've got the know-how to deliver top-notch corporate web portals, eCommerce sites, mobile apps, and information systems. Plus, we're experts at tackling complex custom software engineering projects. Trust us to navigate even the trickiest technical terrain with ease...
Top Services:
- Software Development
- Mobile App Development
- eCommerce Development
- Location
- Seattle, Washington
- Number of Employees
- 100 - 249
- Average Hourly Rate
- $99/hr
- Minimal Budget
- $10,000 - $25,000
We provide comprehensive needs analysis, design, and implementation services to ensure successful Internet strategies for our clients. Our team specializes in LAMP-based codebases and offers ongoing website evolution support to ensure our clients stay up-to-date with the latest technology. Trust Montana...
Top Services:
- Web Development
- Mobile App Development
- Location
- Seattle, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $149/hr
- Minimal Budget
- $10,000 - $25,000
New Normal is a dynamic agency specializing in website and mobile development services, guiding clients through strategic decisions and technical solutions. It helps businesses navigate the complexities of technology selection and implementation. The agency's expertise extends to custom web applications...
Top Services:
- Mobile App Development
- Web Development
- IT Services
- Location
- Seattle, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $99/hr
- Minimal Budget
- $10,000 - $25,000
US based custom software development company with local presence in New York, Seattle and Bogota that has a strong industry focus on FinTech, E-Commerce and Blockchain industries. Besides being a great IT employer, we have been featured in Global Outsourcing List...
Top Services:
- Blockchain
- Mobile App Development
- Software Development
- Business Consulting
- Show more
- Location
- Bellevue, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $80/hr
- Minimal Budget
- $10,000 - $25,000
- Portfolios Count
- 9 Projects Listed
Synodic Arc is a team of passionate developers and artists pushing the envelope of the next generation of games. We take ideas wherever they come, and we never want to do the same thing twice. Our goal is to create a unique player experience that reminds you of why you started playing games in the first...
Top Services:
- Software Development
- VR/AR
- Mobile App Development
- Location
- Bellevue, Washington
- Number of Employees
- Under 49
- Minimal Budget
- $10,000 - $25,000
At Pelotech, we're a team of seasoned senior developers specialised in Kubernetes and cloud solutions. We partner with companies, from Fortune 500 giants to mid-sized businesses, to solve complex challenges in cloud migration, integrations, application development and modernisation initiatives...
Top Services:
- Software Development
- Cloud Consulting
- Mobile App Development
- Managed Services
- DevOps Consulting
- Show more
- Location
- Seattle, Washington
- Number of Employees
- Under 49
- Average Hourly Rate
- $200/hr
- Minimal Budget
- $10,000 - $25,000
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