Support
How do intervals work?
Press Start and walk fast for 3 minutes, then slow for 3 minutes; repeat 5 times. The app vibrates and chimes at every phase change. Durations and cycle count are adjustable in settings (gear icon).
Where are my walks saved?
Every walk is saved in the app's own History. On iPhone and Apple Watch you can also tap "Save to Health" on the summary screen — the workout then appears in Apple Fitness and Apple Health with heart rate, distance and calories.
Why is there no heart rate on my phone?
A phone has no heart-rate sensor. On iPhone, if you wear an Apple Watch, the app reads the heart rate recorded during the walk back out of Apple Health.
Purchases & restore
The first 7 days are free with the App Store free trial; cancel before it ends and you are not charged. Plans: monthly, 6 months, yearly, or a one-time lifetime unlock. Already purchased? Tap "Restore purchase" on the purchase screen.