Language, units and reminders
Language
The app speaks German, English and French. Switching in Settings takes effect immediately — no restart needed. "System" follows your iPhone's language.
Units
Kilograms or pounds, kilometres or miles. Internally everything is stored metric and only converted for display — so you can switch any time without losing anything.
Reminders
Under Notifications you decide whether the app reminds you of planned workouts, nudges you when the rest timer ends, and whether it mentions a running streak. Each one can be switched off separately — and all of them, if you'd rather have silence.
Apple Watch
The watch can train on its own: load a planned session, tick off sets, jump freely between exercises, or log with no plan at all. After the workout everything moves over to your iPhone.