Top 10 Fitness App Development Companies in Seattle (2025 Rankings)

Alexey Porubay
Tech Journalist
June 20, 2025
5 min read

Table of Contents

Seattle is home to one of the most vibrant and innovative tech communities in the US. In 2025, the city continues to attract fitness brands and health tech startups looking for expert mobile app development partners.
Seattle-based agencies offer a strong mix of mobile development, UX/UI design, AI integration, and cloud services to help fitness brands scale and succeed.

This guide highlights the top 10 fitness app development companies in Seattle. Whether you are launching your first fitness app or expanding an existing digital product, these agencies can help bring your vision to life.

If you'd prefer to skip detailed descriptions and go straight to the ranking table, you can jump directly to the full comparison below.

Jump to the Comparison Table

Zfort Group

Zfort Group is a global fitness app development company with over two decades of experience. They collaborate with fitness brands in Seattle to build mobile apps with AI integrations, wearable connectivity, and personalized fitness tracking.
Their full-service team supports clients from concept to launch and post-launch growth.

Employees: 250–300
Hourly Rate: $50–$99/hr
Location: Servicing Seattle, WA

New Normal

New Normal is a Seattle-based digital product studio that helps fitness brands create engaging, high-performance mobile apps. They combine mobile development with UX/UI design, web development, and branding to offer a full product experience.

Employees: 10–49
Hourly Rate: $100–$149/hr
Location: Seattle, WA

pubGENIUS

pubGENIUS helps fitness and wellness brands in Seattle build scalable mobile apps and custom software solutions. They focus on delivering quality development services with a fast turnaround and strong project management.

Employees: 10–49
Hourly Rate: $50–$99/hr
Location: Seattle, WA

Helpful Human

Helpful Human is a creative digital studio in Seattle specializing in custom software, mobile apps, and UX/UI design for fitness and wellness companies.
They are known for their clean design approach, user-first thinking, and high-end digital craftsmanship.

Employees: 10–49
Hourly Rate: $150–$199/hr
Location: Seattle, WA

Lunarbyte.io

Lunarbyte.io is a development agency in Seattle that works with fitness brands to design and launch intuitive mobile apps and web applications.
Their services also include custom software development and web platform optimization for fitness brands.

Employees: 2–9
Hourly Rate: $100–$149/hr
Location: Seattle, WA

Montana Banana Web Development

Montana Banana Web Development offers mobile and web development solutions for fitness and health companies in Seattle.
They also specialize in eCommerce optimization, conversion rate optimization, and user-centric design to support product success.

Employees: 2–9
Hourly Rate: $100–$149/hr
Location: Seattle, WA

UpTop

UpTop is a Seattle design and development studio focused on delivering superior UX/UI design combined with custom software and mobile app development for fitness brands.
They are known for blending deep design expertise with strong technical execution.

Employees: 10–49
Hourly Rate: $150–$199/hr
Location: Seattle, WA

Mobcoder

Mobcoder is a full-service development company in Seattle. They help fitness brands launch and scale mobile apps with added AI capabilities, IoT integrations, DevOps, and custom software development.
Mobcoder is a great choice for companies seeking large-scale fitness technology solutions.

Employees: 50–249
Hourly Rate: $50–$99/hr
Location: Seattle, WA

Zazz

Zazz is a Seattle app development company that works with fitness and wellness companies to create polished and scalable mobile applications.
They focus on delivering high-quality mobile solutions combined with strong UX/UI design.

Employees: 50–249
Hourly Rate: $25–$49/hr
Location: Seattle, WA

ThirstySprout

ThirstySprout helps fitness companies in Seattle with development outsourcing, AI integrations, custom software development, and recruiting.
They offer flexible engagement models and focus on helping clients scale their digital fitness products quickly.

Employees: 50–249
Hourly Rate: $50–$99/hr
Location: Seattle, WA

Conclusion

Seattle remains a prime destination for fitness app development in 2025. From creative boutique agencies like Lunarbyte.io and Montana Banana to large development partners like Mobcoder and ThirstySprout, the city offers a wide range of expertise.
No matter the size of your project, the companies listed here can help turn your fitness app idea into a market-ready product.

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