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Mobile · Case Study

How we built a fitness app that reached a 4.7-star rating

A fitness startup needed a mobile product for guided plans, progress tracking, and coach-client engagement.

Client

Fitness startup · India

Service

Mobile App Development

Timeline

8 weeks

Budget

$8K-$15K

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4.7

Average App Store rating

Weeks to launch

Core user journeys shipped

30%

Increase in coaching engagement

The challenge

A fitness startup needed a polished app without enterprise cost

The client had strong coaching content but no scalable app experience. Clients were receiving plans across chat, spreadsheets, and manual check-ins.

They needed a mobile product that felt polished enough for paid customers while staying focused on launch-critical user journeys.

Before Solidity Labs

Workout plans were difficult to track consistently

Coach-client communication was fragmented

Progress data was not visible in one place

The first version needed to launch within a fixed budget

Our solution

What we built and why it worked

We built a React Native app with guided workout plans, progress tracking, check-ins, and coach visibility. The backend supported user profiles, plan assignment, and analytics for engagement.

The product was delivered as a focused first release with a clear roadmap for subscriptions, deeper analytics, and community features.

Delivered outcomes

Mobile app for workout plans and progress tracking

Coach dashboard for client visibility

Check-in flows and engagement reminders

Launch-ready app store assets and handover

Technology stack

Built with the right tools for the project.

Mobile

React NativeExpo

Backend

Node.jsFirebase

Analytics

Event trackingUser engagement

Launch

App StorePlay Store

Development process

How the project moved from first call to delivery.

4 days

Journey mapping

Mapped workouts, check-ins, progress tracking, and coach workflows.

1 day

Milestone agreement

Confirmed fixed scope, 50% advance, and the first release backlog.

5 weeks

Mobile build

Built the app screens, backend workflows, and coach visibility tools.

2 weeks

Beta testing

Collected feedback from early users and improved onboarding friction.

3 days

Store launch

Prepared release assets, store submissions, and handover documentation.

“The first release gave us exactly what we needed: a polished app, clear user journeys, and enough analytics to understand what customers wanted next.”

Anonymised Client

Founder · Fitness startup · India

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