Interval‑O‑Matic

A workout interval timer and tracker with a 1970s look.

Four looks

Pick the one you like in the Menu. Shown here on iPhone.

How it works

  1. Build routines

    A routine is a list of exercises, each with sets, work time and rest time. Make one for each part of your session: a warmup, a lifting routine, a stretch.

  2. Combine them into a workout

    Chain saved routines in order, like Warmup + Lift + Stretch, and the timer runs straight through from one to the next.

  3. Try a stack

    Want a different mix today? Stack routines for a one-off sequence, with no new workout to save. If you like it, name it and keep it.

For iPhone

The full app, in beta: four looks, your history in iCloud, and workouts saved to Apple Health if you want them.

Join the iPhone beta

Free through Apple’s TestFlight. The link walks you through installing TestFlight, then the app.

In your browser

The web app runs on any phone or computer. On iPhone, tap Share, then Add to Home Screen, to keep it like an app.

Open the web app