Privacy
Calmence is a resonance-breathing app. We keep data collection to the minimum needed to make the app useful, and we try not to surprise you.
What the app collects
Calmence is a Flutter app for iOS and Android. With your explicit permission, it reads your resting heart rate variability (HRV) from Apple HealthKit or Android Health Connect. This read happens on your device. We do not upload your HRV to any server.
Your session history (date, duration, pace) is stored locally on your device using SharedPreferences. There is no cloud account yet. Uninstalling the app deletes this data.
What this website collects
This site is a static landing page. We do not set cookies, run analytics, or collect form submissions. We do load Google Fonts from Google's CDN, which sets its own cookies under Google's policy. If you want to avoid that, most browsers let you block third-party requests.
Third parties
- Apple HealthKit — you grant read access in iOS Settings; Apple governs that data.
- Android Health Connect — you grant read access through Health Connect; Google and the data providers govern that data.
- Google Fonts — used only on this website for typography.
Data retention
Session data lives on your device until you delete it or uninstall. When we introduce accounts and cloud sync later, we will update this page before shipping it and ask for consent inside the app.
Your rights
You can revoke Health permissions at any time in iOS Settings → Privacy & Security → Health, or in Android Health Connect. Uninstalling Calmence removes the local session history. Since we don't have accounts yet, there is no server-side profile to delete.
Children
Calmence is not directed at children under 13. Please don't use it if you're under the age required by your local law to consent to this kind of app.
Changes
If we change how data is handled, we will update the "Last updated" date and, for material changes, notify users in-app.
Contact
Questions: hello@calmence.com
HRV reflects weeks of practice, not single sessions. Your data should too — we keep it yours.