Calmgraph: Stress Score & HRV

One-time purchase. No subscription, no account, no cloud. Your stress score stays on your device - see what moves it, week by week.

Calmgraph turns your daily stress into one number you can actually act on - fully on-device, no subscription.

• Stress score (0-100) From Apple Watch HRV, resting heart rate, and sleep, measured against YOUR personal baseline rather than a single absolute value. The first 14 days are a calibration period shown as provisional.

• Cause tags Tag work, sleep, exercise, caffeine and more, layered onto your score so you can see what may have moved it.

• Weekly insight See what likely moved your score each week. These are correlations, not conclusions.

• No Apple Watch? No problem Quick 1-tap check-ins give you the same visualization.

• One-time purchase, not a subscription.

All measurements are processed on your device. Nothing is sent off-device, collected, or used for advertising.

Calmgraph is not a medical device and is not intended to diagnose or treat any condition. Consult a healthcare professional about any health concern.

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