In The Zone Training
Heart rate zone training
About
Train effectively by monitoring your heart rate zones in real-time. This app uses your Apple Watch data to guide your effort, providing visual cues and haptic feedback to keep you in your target zone. Track indoor and outdoor activities with detailed zone-colored maps and monitor your training load.
What's New in In The Zone Training
1.2
September 16, 2026
New: how recovered are you. • A Recovery card at the top of History reads the overnight heart-rate variability your Apple Watch already records and places last night against your own last four weeks: about your usual, above it, below it, or well below. It says what commonly causes a dip and that it is a signal, not a diagnosis. • The milliseconds are there for those who want them, behind "The numbers". Opt-in, compared with your own readings only, and nothing leaves your iPhone. • When your training load has been climbing while your recovery signal is below usual, the card says so in one sentence. • Uses the newer RMSSD measure on iOS 27 once it has a month of its own readings, and the SDNN your watch has recorded for years before that.
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FAQ
What is In The Zone Training?
In The Zone Training is a fitness app that helps you train by heart rate zones. It uses your Apple Watch to show you which of five training zones you are working in live, so you can adjust your effort accordingly.
How does In The Zone Training use my Apple Watch?
The app receives live heart rate data directly from an Apple Watch workout, ensuring immediate and accurate readings. Your watch can also tap your wrist with different patterns to alert you if you drift out of your target zone.
Can In The Zone Training be used for indoor workouts?
Yes, In The Zone Training is built for both indoor and outdoor activities. Treadmill, elliptical, bike, and rower workouts are fully supported, with a clear display of your effort zones.
How are heart rate zones calculated in In The Zone Training?
Heart rate zones are calculated using the Tanaka formula based on your age, or from a maximum heart rate you measure yourself. You can choose to use percentage of maximum or the Karvonen scale if you know your resting heart rate.
Does In The Zone Training track training load?
Yes, the app tracks training load by weighing your time spent in different intensity zones. It compares your current week's load against your recent average, providing a more insightful metric than total workout time alone.
What is the price of In The Zone Training?
In The Zone Training is a paid app, available for $1.99. This one-time purchase grants you access to all features without any recurring fees.
Does In The Zone Training have ads?
No, In The Zone Training does not contain advertisements. The app is designed to be ad-free, ensuring an uninterrupted training experience.
What devices does In The Zone Training support?
In The Zone Training is supported on Apple Watch and iPhone. This allows for seamless integration and use during your workouts.