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TensionRadar

HRV and stress at a glance
Chen He · Health & Fitness
View on App Store ↗
★ 5.00average rating
1ratings
—new ratings, last 7 days
—not in top charts now

Ratings breakdown

★★★★★
100%
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0%
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App info

Developer
Chen He
Category
Health & Fitness
Released
Oct 6, 2026
Version
1.1.0 (Oct 16, 2026)
Price
Free
Size
20.9 MB
Requires
iOS 18.0
Age rating
9+
Languages
English, French, German, Japanese, Korean, Portuguese, Simplified Chinese, Spanish, Traditional Chinese

In-app purchases

Character Pack$0.99
Current prices, App Store US.
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About TensionRadar

TensionRadar turns the heart data your Apple Watch already records into a picture of your stress, with a small cartoon character that feels what your heart feels. HOW IT WORKS Heart rate variability (HRV) is the tiny variation between heartbeats. More variation means a relaxed, adaptable nervous system; less means load. TensionRadar learns your personal HRV baseline over a few weeks and scores every new reading against it, blended with how far your heart rate sits above resting. The result is a 0 to 100 stress score in five bands: Serene, Calm, Steady, Tense and Overloaded. UPDATES AS DATA BECOMES AVAILABLE TensionRadar reads new Apple Watch measurements from Health and supports background updates. Apple controls when HRV is measured and when apps and widgets refresh, so readings may be delayed and are not continuous. Open the app to check the latest available data. BEAT-TO-BEAT DETAIL…
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