Built by our founders · our own product, not client work

Gym Commitment: a workout log on iOS, Android and Apple Watch

A workout log for people who train with weights. Last time's numbers on every set, and AI plans from your own Claude or ChatGPT.

  • 5.0★App Store rating (US)
  • 3iOS, Android, Apple Watch

In plain words

What it does, and what it means for you

What it does

People who lift weights open it between sets to note what they lifted, with last time's weight and reps right on screen. Anyone who wants a plan asks their own Claude or ChatGPT, and the plan arrives in the app.

What it shows we can build

One app for iPhone, Android and Apple Watch, connected to AI assistants, and run live after launch.

Ideas for your organisation

  • A gym or training business

    An app your members open every day, with their progress and reminders.

  • A school or clinic

    One app for iPhone and Android, built once, so it is simpler to look after.

  • A product that uses AI

    An app that works with the AI assistants people already have, with privacy rules built in.

Ideas to show what is possible. Not client projects.

The screens

See it for yourself

  • Gym Commitment logging a deadlift set, with last time's weight and reps shown
    Gym Commitment logging a deadlift set, with last time's weight and reps shown
  • Gym Commitment set screen with the muscles worked highlighted on a body figure
    Gym Commitment set screen with the muscles worked highlighted on a body figure
  • A workout plan sent to the app from Claude
    A workout plan sent to the app from Claude

The full story

How we built it

What it means for your project

What it does

People open Gym Commitment between sets to log what they lifted, with last time's weight and reps on screen. Someone who wants a plan asks their own Claude or ChatGPT, answers a short trainer-style interview, and the finished plan arrives in the app, ready to follow.

What we built

  • One codebase for iOS and Android, plus Apple Watch. The same app ships to both stores, with a companion Apple Watch app.
  • AI plans from the user's own Claude or ChatGPT. The person adds our connector to their assistant. Our server runs the first session like a trainer would, twelve questions one at a time, and sets the starting weights from lifts the person stated, never from the AI. The plan reaches the phone with a push notification.
  • Privacy by design. Nothing from the interview is stored, only the finished plan. A plan that mentions age, body weight, health, an injury or a photo is refused, and only the real iPhone and Android apps can pair with the connector.
  • Everything a live app needs. Apple Health and Android Health Connect, home-screen widgets, in-app purchases, push notifications, crash reporting and analytics.

Outcome

5.0★ on the App Store (US).

Need something like this?

Tell us what you want to build. A founder replies within one working day.