CardioLog – Privacy Policy

Last Updated: January 15, 2026

CardioLog is developed and published by QuietByte Studio. We respect your privacy and follow a Privacy by Design approach.

1. Data We Collect

CardioLog does not collect or store personal health data on our servers. All health readings (blood pressure, heart rate, sugar levels, etc.) are:

Stored locally on your deviceNever transmitted to usNever sold or shared

2. Analytics & Crash Reporting

Services Used

PostHogProduct analytics, feature flags, and surveys
SentryCrash and error monitoring
RevenueCatPurchase and subscription management

Data Collected

Device type and operating-system versionApp versionAnonymous or pseudonymous identifiersApp interactionsCrash and error diagnosticsSubscription and entitlement status

These services may process the limited technical information listed above to help us understand app usage, manage features and surveys, diagnose errors, and manage purchases and subscriptions. Health readings, profile names, dates of birth, notes, and exported health reports are not sent to these services.

3. No Accounts

CardioLog does not require an account. Analytics and diagnostic information uses anonymous or pseudonymous identifiers and is not intended to directly identify you.

4. Data Backup & Loss

Since data lives only on your device, uninstalling the app may delete your records.

⚠️ Recommendation: Please use your device's native iCloud/Google Drive backup to keep your data safe.

Children’s Privacy

CardioLog is not intended for children under 13. We do not knowingly collect data from minors.

Changes to Policy

We may update this policy occasionally. Continued use of the app implies acceptance of any changes.

Questions regarding privacy?

cardiolog@quietbyte.net

End of Policy