Effective date: 28 September 2026

Fasting Coach is designed so that your data never leaves your iPhone. This policy explains what the app handles and why. The short version: we collect nothing.

What the app stores — on your device only

• Fasting activity: your goals, fast start/end times, streaks, and history.
• Coaching data: your preferences (coaching style, quiet hours, message limits), the coach's notes about what kind of support works for you, and a log of the coaching decisions the app made.
• Conversations: chats with the coach are processed on-device and are not retained as transcripts beyond the active session.

All of this lives in local storage on your iPhone. It is never uploaded, synced, or shared. Deleting the app deletes it. "Start over" in Profile also erases it.

Health data

If you enable Health integration, Fasting Coach reads steps, active energy, sleep, and workouts from Apple Health on your device, read-only, solely so coaching can reflect your day. Health data is never written back, never transmitted anywhere, and is not used for any purpose other than the coaching shown to you. You can revoke access anytime in Settings → Privacy & Security → Health.

On-device AI

Coaching decisions and messages are generated by Apple's on-device Foundation Models. Prompts and responses are processed locally on your iPhone.

If a future version offers optional cloud reasoning via Apple's Private Cloud Compute, it will be off by default, clearly labelled in Profile, and used only with your explicit permission. Private Cloud Compute is designed by Apple so that data is not stored or made accessible to Apple.

Microphone and speech

The voice coach uses the microphone only while you hold a conversation, and speech is transcribed on-device by Apple's speech frameworks. No audio or transcripts leave your iPhone.

What we don't do

• No accounts or registration
• No analytics, telemetry, or crash reporting
• No advertising or tracking of any kind
• No third-party SDKs
• No network requests — the app works fully offline

Notifications

Coaching reminders are local notifications scheduled on your device. You control them through iOS notification settings and the app's own quiet hours and message limits.

Children

Fasting Coach is not directed at children. Fasting is not appropriate for children; consult a doctor for any minor's dietary decisions.

Not medical advice

Fasting Coach offers lifestyle support, not medical advice, diagnosis, or treatment. Consult a qualified professional before making fasting decisions that affect your health, and stop fasting if you feel unwell.

Changes and contact

If this policy changes, the updated version will be published at the same URL with a new effective date. Questions: open an issue on the Fasting Coach GitHub repository or contact srinivas@rowdur.com.