iPhone app

A little movement. A promise kept.

Promise helps you keep one small movement promise a day: four squats or five push-ups. Prop up your iPhone, step back and move. The camera counts every rep, and Momo the bear moves with you.

Coming soon to the App Store

For iPhone. This page shows the App Store button as soon as Apple approves the app.

Momo, the sage-green movement bear, waving

How it works

  1. 1

    Pick a promise you can keep

    Choose a movement, a number that feels easy on a bad day, and the weekdays you plan to move. The other days are rest, and rest is part of the plan.

    Promise setup screen titled Which days?, with Monday, Wednesday and Friday selected and an optional reminder
  2. 2

    Prop up your phone and move

    Step back so Momo can see all of you. The camera counts every rep on your iPhone. Nothing to tap, nothing to log.

    Promise screen with Momo the bear: Let's count your first 6 squats. The camera is only used to count; nothing is recorded or leaves your phone.
  3. 3

    Promise kept

    Your movement is saved on your iPhone, then you see the kept promise and your week.

    Promise Today screen saying Promise kept, with a weekly rhythm calendar showing one completed day

What's inside

Squats, push-ups and jumping jacks

Three movements the camera counts on your iPhone. More moves arrive in updates as each one is verified.

Momo moves with you

Momo is an animated 3D bear who mirrors your movement live and counts along with an Apple system voice.

A rhythm, not a guilt trip

See your week with planned rest days. Miss a day? Come back. Your history stays.

Private by design

  • Your body position is analysed on your iPhone. Camera images are never recorded, saved or uploaded.
  • Your progress is stored only on your device.
  • No account, no ads, no analytics, no tracking.
Read the privacy policy

Promise Pro

  • Yearly, with a 7-day free trial
  • Weekly

Promise needs a subscription after the short setup. Choose a yearly plan that starts with a 7-day free trial, or a weekly plan. The exact price for your country is shown in the app before you start. Cancel any time in your iPhone settings.

Start with one small promise.

Coming soon to the App Store

For iPhone. This page shows the App Store button as soon as Apple approves the app.

Promise is a movement habit app, not a fitness programme or medical advice. Check with a professional if you have a condition that affects exercise.