> For the complete documentation index, see [llms.txt](https://app.inwisso.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://app.inwisso.com/apps/fastfaster-intermittent-fasting-and-health-tracker/pp.md). # Privacy Policy FastFaster ("we," "our," or "us") is committed to protecting your privacy. This Privacy Policy explains how we collect, use, disclose, and safeguard your information when you use our mobile application **FastFaster: Intermittent Fasting** (the "App"). Please read this Privacy Policy carefully. If you do not agree with the terms of this Privacy Policy, please do not download or use the App. *** ### 1. Information We Collect FastFaster is designed to protect your data. We operate under a **privacy-first, local-only architecture**. The App does not require user accounts, email registration, or passwords to function. #### A. HealthKit Data (Apple Health Integration) The App requests read and write access to Apple's HealthKit database (`HKHealthStore`) to provide weight and workout tracking features. * **Data Requested:** Weight (Body Mass), active energy burned (calories), distance (cycling/walking/running/swimming), and workout activity types. * **Storage:** All HealthKit data is read from and written directly to your device's Apple Health App database. We do not store, upload, or transmit this data to any external servers. * **HealthKit Restrictions:** In compliance with Apple developer policies, **we do not use HealthKit data for marketing, advertising, or profiling**, nor do we sell, rent, or disclose your HealthKit data to any third parties. #### B. Local App Storage (SwiftData & CoreData) * Your fasting sessions, manually logged weights, and customized goals are saved locally on your device using Apple's secure SwiftData framework. * If you have iCloud backup enabled on your device, this local database may be backed up to your personal, secure Apple iCloud account. We do not have access to your iCloud backups. #### C. Technical Data & Logs * The App runs entirely on-device and does not send telemetry, analytics, crash logs, or usage metrics to us or any third-party analytics SDKs. *** ### 2. How We Use Your Information We do not have access to your information. The data processed on your device is used solely to: 1. Calculate and display fasting timer durations and biological phases. 2. Visualize weight loss trends and goal progression via interactive charts. 3. Calculate active calories burned and exercise minutes for daily activity rings. 4. Trigger local notifications reminding you of fasting milestones (e.g., entering Ketosis or completing a fast). 5. Generate Dynamic Island and Lock Screen Live Activities. *** ### 3. Sharing and Disclosure of Information **We do not sell, trade, license, or rent your personal health data to anyone.** Because we do not collect or store your data on external servers, we cannot disclose it to third parties. Your data remains under your absolute control on your physical iOS device. *** ### 4. Security of Your Data We rely on Apple's robust security architecture (iOS Sandbox, File Data Protection, and Apple Health encryption) to safeguard your data. Since your health data is stored directly in Apple's Health database, it is encrypted on-device when your phone is locked passcode/FaceID. *** ### 5. Your Choices and Data Management You have complete control over your data: * **HealthKit Permissions:** You can grant, modify, or revoke FastFaster's access to read or write weight and workout data at any time by opening the native Apple **Health App > Profile (top right) > Apps > FastFaster**. * **Notification Controls:** You can enable or disable fasting milestone alerts in **Settings > Notifications > FastFaster**. * **Live Activities:** You can disable Lock Screen and Dynamic Island widgets in **Settings > FastFaster > Live Activities**. * **Data Deletion:** To permanently delete all fasting sessions and weight entries recorded in the App, simply uninstall the App from your device. To delete HealthKit records, you must delete them from the native Apple Health App. *** ### 6. Children's Privacy (COPPA Compliance) Our App is not intended for use by children under the age of 13. We do not knowingly collect personal information from children under 13. Since we do not collect any user registration data or upload files, children's privacy is protected on-device. *** ### 7. Changes to This Privacy Policy We may update our Privacy Policy from time to time. We will notify you of any changes by updating the "Effective Date" at the top of this document and displaying a notice in the App Store update notes. You are advised to review this Privacy Policy periodically for any changes. *** ### 8. Contact Us If you have any questions, concerns, or feedback regarding this Privacy Policy or our privacy practices, please contact us: * **Email:** --- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://app.inwisso.com/apps/fastfaster-intermittent-fasting-and-health-tracker/pp.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.