iPhone & Apple Watch
01
A window, not a scale.
Harder isn't better. The zone is specific.
02
Reads, doesn't write.
Apple Watch already has the data. Kadenza just observes. Nothing leaves your iPhone.
03
Your week, day by day.
How many minutes inside the window. Nothing more.
04
Haptics and sound.
On your wrist, in your ears, when it matters.
Two apps, one thing.
ON IPHONE
Your week, your data, your history.
ON WATCH
Start workouts here. See live BPM. Feel the zone.
Other apps count steps, calories, goals, streaks.
Kadenza counts one thing: how long you stayed inside the specific window between 60% and 74% of your max HR.
- No weight loss promises.
- No leaderboard.
- No account.
Privacy first. No accounts. No tracking.
Download on the App Store