Calmgraph turns Apple Watch HRV or quick subjective check-ins into a daily 0–100 stress score, layered with cause tags so you can see what moved it. Fully offline. No subscription, no account, one-time purchase.
Download on the App StoreMeasured against your personal baseline rather than a single reading, so daily noise doesn't throw you off.
A 0–100 score from HRV, resting heart rate, and sleep, relative to your personal baseline. The first 14 days are a calibration period shown as provisional.
Tag work, sleep, exercise, caffeine and more onto your score, and look back at what may have moved it.
See your score over day / week / month. Days with tags show as larger points.
See what likely moved your score each week. These are correlations, not conclusions.
Quick 1-tap check-ins (5 levels) give you the same visualization.
Everything is processed on your device. No account, no data sent off-device, no ads.
One-time purchase, no subscription. Buy once, keep it forever.
| Feature | Free | Pro US$9.99 |
|---|---|---|
| Today's score | ✓ | ✓ |
| Quick check-ins | ✓ | ✓ |
| History graph | 7 days | Unlimited |
| Cause tags | 3 tags | 8 + custom |
| Weekly insight | First line | Full |
No. Quick 1-tap check-ins give you the same visualization on their own. With a Watch, your score is computed automatically from HRV and more.
Everything stays on your device. Nothing is sent off-device, collected, or used for advertising. No account is needed, and every feature works in airplane mode.
Your score is measured against your personal baseline. It grows more accurate as it learns, so the first 14 days are a calibration period.
No. It's a one-time purchase (US$9.99). Today's score and your recent timeline are available for free.