Your records. Your choice.

The Fast is operated by Prime Adventure LLC. You can use the fasting timer, local history and widgets without an account. This policy covers the mobile app, its watch companions and thefast.day.

On your device

Your fasting start and end times, original time zones, goals, corrections and preferences are stored on your device. The app shares the information needed to display your timer with its widgets and optional live timer display on the same device. When you use a paired watch companion, the phone and watch exchange the current fast, display preferences and start or end actions through Apple or Google’s device connectivity services. Using the watch does not require cloud record saving. Reminders are scheduled locally. If you resolve a sync conflict, both copies are first saved as a local backup. You can export or delete these backups in Account & records (Account & sync in older versions). Device backups are subject to your operating system and backup settings.

Optional account and records

If you link an account, we receive an account identifier, your email address and the basic profile information supplied by your sign-in provider, such as your name and profile image URL. Your email may be an Apple private relay address. Authentication uses Google, Apple or an email code. We do not receive your Google or Apple password. Apple authorization tokens are encrypted on our server so we can revoke access when you delete your account.

Starting with version 1.0.5, signing in to keep records across devices enables automatic saving of your history, current fast and default duration. The sign-in page explains this purpose. Older versions use a separate Sync records action; an existing account that has not enabled saving still requires an explicit choice. After saving is enabled, local changes upload when the app can connect, and cloud changes are checked on sign-in, reopening and periodically while the app is active. Those records include fasting dates, times, durations, goals, time zones and correction information. They may reveal health-related information about you. You can sign out to stop syncing and keep using the app locally. If you sent feedback anonymously before linking an account, those notes become associated with that account.

Feedback and support

Sending feedback shares your note, any optional reply email you provide, a submission identifier, platform, app version and build number. Older app versions also include the feedback category you selected. A linked account or a limited anonymous account identifies the sender. Fasting records are not attached automatically. If you contact us by email, we receive your email address and the content you send. Please leave out information you do not want us to receive.

Sharing

Share images are generated on your device. You choose the image, its details and where to send it using the system share sheet. The recipient service handles the image under its own policy.

Basic usage statistics

App versions with basic usage statistics automatically send daily counts of app use, fasts started and saved, opening the calendar and record or month share screens, and opening the app from a widget. Counts include the day in UTC, iOS or Android, the app version and a randomly generated installation identifier. We use these counts to understand feature use and repeat use. They do not include fasting start or end times, durations, goals, record identifiers, record contents or share images.

Usage statistics are sent directly to our Supabase service, separately from account sync. We do not link the installation identifier to your account or use advertising identifiers or device fingerprinting. This is pseudonymous data, not a claim of complete anonymity. The app can queue up to 31 days of daily counts locally while offline. Daily counts expire after 90 days through scheduled cleanup. Uninstalling the app stops future collection from that installation; previously uploaded counts expire on the same schedule. Provider backups and security logs follow provider retention periods; if hosting is paused, overdue cleanup runs after service resumes. No statistics are backfilled from your fasting history.

Services we use

Supabase provides authentication and cloud storage in the United States. Resend delivers sign-in emails. Apple and Google process their own sign-in flows. OpenAI Sites and Cloudflare provide website hosting and domain services. These providers may process network information such as IP addresses and operational logs to deliver and protect their services. See Supabase, Resend, Apple, Google, OpenAI and Cloudflare.

Use and retention

We use this information to provide account access, sync the records you request, deliver support, protect the service and improve the product through basic usage statistics. The app has no advertising or analytics SDK. We do not sell your information or use your fasting records for advertising.

Cloud records and feedback remain until you delete the associated account or request deletion. Deletion removes the account and its records and feedback from the live database. Provider backups and security logs may remain until their normal retention periods end. Records kept on your device remain until you delete them or remove the app; operating system backups may retain earlier copies.

Your choices

In version 1.0.5 and later, use Settings → Account & records → Delete account, then confirm. This also removes the limited anonymous account created when you send feedback without signing in. Older versions use Account & sync → Delete cloud account for linked accounts, or Help & feedback → Delete feedback data for anonymous feedback. See deletion instructions.

Depending on where you live, you may have rights to access, correct, receive a copy of or delete your personal information, object to processing, or complain to your local data protection authority. Email hi@thefast.day to make a request. We may need to verify that the information belongs to you. International processing is subject to the safeguards offered by our service providers.

Children and updates

The Fast is not directed at children under 13, and we do not knowingly collect their personal information. Contact us if you believe a child has provided information. We will update this page when our practices change and provide additional notice when required.