ZoneMax turns the heart rate, HRV, sleep and VO₂ Max data already sitting in Apple Health into a daily recovery score and live training zones — no extra wearable, no new account.
Coming soon to the App StoreFor iPhone and Apple Watch
A look inside
What it does
ZoneMax doesn't ask you to log anything new. It reads what your phone and watch already recorded and turns it into a plan for today.
A 0–100 score each morning from HRV, resting heart rate, sleep and recent training load — so you know if today's a push day or a rest day.
Max-HR percentage, Karvonen, LTHR, or fully custom floors — pick the model you already train with instead of learning ours.
Your Apple Watch already estimates it on outdoor runs and walks. ZoneMax plots it over time so you can see the trend, not just today's number.
Recovery Score and Zone Breakdown, right on your watch face. Open ZoneMax on your phone once and the watch stays in sync.
Reads whatever's already in Health — heart rate, sleep, workouts — and skips gracefully around anything it can't access. No separate data entry.
No servers, no accounts, no analytics. Your health data stays exactly where Apple put it.
ZoneMax reads from Apple HealthKit on your device and stores only display snapshots locally. There is no ZoneMax server for your data to reach — there's nowhere else for it to go.
Landing on the App Store for iPhone and Apple Watch.
Coming soon to the App Store