Privacy policy

1. Apple Health data

With your permission, the app reads heart rate variability, resting heart rate, sleep and active energy from Apple Health. It never writes to Apple Health.

This data is processed on your iPhone to compare your latest reading with your own usual range. It is kept only in the app's local storage on your device, is never sent to us or to any third party, is never stored in iCloud, and is never used for advertising, marketing or profiling.

2. Camera readings

If you choose Measure with camera and allow camera access, the app uses the back camera and its light for one minute to see the pulse in your fingertip. Each video frame is reduced to a brightness value on your iPhone as it is captured. The video is never recorded, stored or sent to us or to any third party. The result is shown on screen; if you tap Save, its RMSSD (a heart rate variability measure), heart rate and the time it was measured are stored only on your device until you delete them, with measurement details: SDNN (another heart rate variability measure), how long it recorded, how many pulse intervals were detected and kept, the camera's frame rate and your iPhone's model name (not an identifier of your device) (swipe a saved reading away, or use Settings > Delete my data). Saved readings are used only to compare later camera readings with your own. They are never sent to us or to any third party and never written to Apple Health.

3. Your notes

Your first name if you enter one, the interests you pick during setup, context you log (such as sleep, workout or a short note), how you said you felt, and your answers after breathing breaks are stored only on your device. The app has no account and we do not receive it. Settings > Delete my data removes your name, your interests, your notes, saved camera readings and the app's cached readings; Apple Health keeps its own data.

4. Notifications

If you allow notifications, the app schedules a daily evening check-in reminder on your device. You can also turn on alerts for a new reading below their usual range; these are created on your device and contain only your own reading. You can turn both off in the app or in device Settings.

5. Advertising

The free version shows ads from Google AdMob. Google may process device identifiers, IP address, coarse location, ad interactions, and diagnostics to provide, secure, measure, or personalize ads where permitted. Your health data and notes are never shared with Google or used to choose ads. Where required, a consent message from Google is shown before ads load, and the app asks for tracking permission before personalized ads are used. Declining changes no feature.

6. Purchases

Remove Ads (a one-time purchase) and Remove Ads Yearly (an auto-renewable subscription) are optional purchases processed by Apple. Apple provides us with transaction status so the app can stop showing ads while a purchase is active; we do not receive your payment-card details. Neither purchase requires access to Apple Health.

7. Sharing and legal disclosures

We do not sell the content you create in Stress Meter. Information may be processed by the providers described above only as needed to operate a feature, process a purchase, provide advertising where applicable, secure the service, or comply with law. We may disclose information when reasonably necessary to respond to lawful requests, protect rights or safety, or prevent fraud and abuse.

8. Retention and security

Local data remains on your device until you delete it or uninstall the app, subject to device backups. Service providers retain information according to their policies and only as long as needed for their stated purpose, security, fraud prevention, dispute resolution, or legal obligations. We use reasonable safeguards, but no storage or transmission method is completely secure.

9. International processing

Service providers may process information in countries other than yours. Where required, they are responsible for applying appropriate safeguards under applicable law.

10. Children’s privacy

The app is not directed to children below the age at which they may consent to data processing in their jurisdiction. We do not knowingly collect personal information from children in violation of applicable law. Contact us if you believe a child has provided personal information inappropriately.

11. Your choices

You can deny or revoke Apple Health access in the Health app (Sharing > Apps > Stress Meter), deny or revoke camera, notification and tracking permission in device Settings, update your ad consent choices from Settings in the app where offered, delete the app's local data from Settings, buy Remove Ads to stop ads, and uninstall the app to delete its local data, subject to device backups.

12. Changes to this policy

We may update this policy when the app, its providers, or legal requirements change. The effective date identifies the latest version. Material changes will be communicated where required by law.