Calmgraph: Stress & HRV
iOS app by YANGLI CHEN. Health & Fitness · YANGLI CHEN
- Store rating
- 0 / 5
- Store rating count
- 0
- Download price
- Free to download
- In-app purchases
- Unknown
- Version
- 1.2
- Listing last refreshed
- 2026-09-08
View the original store listing
Store description excerpt
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 and calendar Tag work, sleep, exercise, caffeine and more, layered onto your score. The calendar view shows a month at a glance, and you can tap any past day to fix its tags or check-in. ■ Weekly insight and tag correlations See what likely moved your score each week. The Pro correlation report compares your average on days with a tag against days without it, and always shows the sample size. These are correlations, not conclusions. ■ Apple Watch and widgets The Watch app and complication put your score on your watch face and let you check in from your wrist - free. Home and Lock Screen widgets are part of Pro. ■ Breathing guide and reminders A 1, 3, or 5 minute breathing guide for the days that sit in the strain band. Daily logging reminders and a weekly review notification are optional. ■ One-time purchase and backup Buy once instead of subscribing. There is no cloud sync, but you can export a backup to a single file and restore it on another device. ■ Monthly & yearly summary / Weekly history (Pro) Averages by month and year, with the calm / mixed / strained mix. Past weeks with their average and what was moving your score. 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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