Fitness app development

We turn ambitious fitness ideas into polished software products. Whether it’s IoT integration, activity tracking, live workouts or AI-powered personalization — we’ve got you covered.

Who is this for?

  • Gyms and fitness coaches
  • Influencers and creators
  • Fitness startups
  • Established brands 

What your fitness app can include

Tracking and monitoring

Let your users track every step, rep, meal, and milestone. From activity tracking and calorie logging to sleep, hydration, and heart rate monitoring—we build features that turn data into progress. It’s the foundation for a fitness journey that actually goes somewhere.

Personalization and customization

Every user is different. We make sure your app feels like it knows them. From AI-generated workout plans to adaptive difficulty and tailored nutrition advice, we help you deliver the right experience to the right person at the right time.

Social and community features

Motivation multiplies when it’s shared. Add challenges, leaderboards, community forums, social media tie-ins, and one-on-one coaching. Your users stay accountable, inspired—and coming back.

Guidance and support

Your app becomes a coach, a trainer, and a support system. Think workout videos, form correction with AI, voice guidance, live streaming, and even real-time chat with experts. Whatever the format, we help users feel confident every time they hit play.

Integration and connectivity

We connect the dots between your app and everything else users rely on—Apple Health, Google Fit, wearables, smart equipment, and IoT devices. Want to add AR/VR, blockchain, or AI chatbots? Let’s do it.

Business and monetization tools

Grow your business while keeping it easy to manage. We can build secure payment systems, subscription plans, admin panels, class schedules, trainer tools, marketing automation, and more. Your app becomes a business engine—not just a nice-to-have.

Apex hero

Charlie Lucas, Co-founder of Apex Rides

We developed an intuitive companion app, designed to smoothly connect with the Apex bike and provide live workout sessions. From tackling complex Bluetooth integrations to optimizing performance, we helped Apex deliver an engaging and reliable fitness solution.

Great, but why DECODE?

Here’s why we’re the right choice to develop your fitness app:


One team. One client.

When we work with you, we’re all in. You get a dedicated, cross-functional team that’s fully focused on your product—no juggling, no context-switching, no split priorities.

Extreme transparency.

From feature planning to weekly check-ins, we keep communication clear and honest. You’ll see exactly what’s being built, why it matters, and how it supports your product goals—no guesswork, no surprises.

We’re great at the hard stuff.

Fitness apps often involve tricky integrations, real-time data, multi-device support, and serious performance needs. That’s our sweet spot. We’ve built platforms that sync with wearables, adapt to user goals, and scale with growing communities.

What you get at the finish line

  • A fitness app that works exactly how your users expect.
  • Tech that scales with your audience.
  • Features that drive engagement, retention, and revenue.
  • Integration with wearables, APIs, and advanced tools.

In the spotlight

NEXT STEPS

Before we start our partnership, we have to make sure
we’re a right fit for you.

Over a relaxed call or two, we’d like to hear as much as possible about your project
(fully NDA’d of course).

We’ll talk about:

  • Your expectations
  • Services you need
  • Your vision

There are a few steps in this phase:

  • We’ll hand-pick a team based on your desired seniority level and other requirements.
  • We’ll send you their CVs so you’ll know every engineer working for you.
  • If necessary, we can set up interviews between you and every engineer.

Only when you’re 100% on board with our choice, we’ll go to the next phase.

If everything sounds good to you, we’re ready to get started.

This could be the start of a
great partnership

Want to get in touch? Just fill in the short form below, or skip to the bottom to arrange a chat direct with our client strategy specialist. Either way, we’ll be back in touch as soon as we can to arrange an informal call.

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Ivor Cindric

Arrange a chat with Ivor, our client strategy specialist.

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