Privacy Policy
Last updated September 22, 2026. FastKept is in development; we will update this policy before launch if anything below changes.
This policy explains how FastKept (the iPhone app and fastkept.com) handles information. The app is operated by Timothy Hess ("we").
Summary
Fasting records, plans and optional logs are planned to be stored on your iPhone without an account or server. Local data may be lost if you delete the app or lose your phone, so CSV export will be easy to find.
Information we collect
- If you purchase the optional supporter subscription: purchase and subscription status
- Crash and error diagnostics limited to technical details, with no fasting or body data
Information we do not collect
- Your fasting times, history or schedules
- Weight, water, mood or measurement logs
- Health data (Apple Health is not part of the current plan)
- Location, contacts or advertising identifiers
Health information
FastKept is a timer and log, not medical advice. It does not measure ketosis, autophagy or any other body state. Fasting isn't right for everyone. Talk to a doctor or other qualified professional before fasting, especially if you have a health condition, take medication, are pregnant or breastfeeding, or have a history of disordered eating.
Optional account
The app does not require an account.
iOS permissions
- — For local reminders you set. Declining them doesn't affect the timer or history.
Service providers
We use a small number of providers only to run the app. They may not use your information for their own purposes.
- RevenueCat — Processing the optional supporter subscription and restoring purchases. It does not receive your app content.
- Sentry — Crash and error diagnostics that exclude your personal content. We will confirm the exact fields in this policy before launch.
Advertising
Any ads in the free version promote other apps by the same developer. We do not sell personal information, do not share it for cross-app advertising, and do not use Apple's advertising identifier to track you.
Purchases
Optional supporter subscriptions are processed by Apple. We receive purchase status (for example, whether a subscription is active) but never your payment card details.
Children
The app is not directed to children under 13, and we do not knowingly collect their personal information.
Your choices and rights
You can use the app without an account, turn off notifications and permissions in iPhone Settings, and delete local data by deleting the app. To access or delete information connected to you, email [email protected]. Depending on where you live (for example, the EU, UK or California), you may have additional rights, and we will honor them.
Retention and security
We keep information only as long as needed for the purposes above and protect it with reasonable safeguards. Crash reports are kept for a limited period.
Changes
We will post changes here and update the date above.