uFast

uFast is a calm, private fasting, food and hydration tracker for real life. Whether you are starting a fast, logging a meal, adding a drink or looking back over your week, uFast keeps the essentials clear and easy to use. It works offline, requires no account and keeps your records on your iPhone.

FAST WITH CLARITY Start a fast now or record the time you actually began. Follow elapsed time, goal progress and target time. Choose a whole-hour fasting goal and keep the next step obvious. End, correct, edit or delete your own fasting records.

FOOD AND HYDRATION Record meals with optional nutrition details and save frequently used meals as favourites. Quickly add water, tea, coffee and reusable custom drink favourites. Mark custom drinks as caloric or non-caloric; food entries are always recorded as caloric events for fasting history.

HISTORY THAT HELPS Browse a calm, time-based view of fasts, food and drinks. Grouped events still open their individual entries for direct editing or deletion. Add or correct past entries directly from History.

Opt in to see clearly labelled inferred fasting intervals derived from your recorded caloric food and explicitly caloric drink entries. Review an inferred interval, save it as a regular fast, start the current one, or hide it from History. Hidden inferred intervals can be re-enabled later. Inferred patterns stay separate from user-recorded fasts and do not claim a biological state.

AT A GLANCE Keep an active fast visible with optional Lock Screen and Home Screen widgets. Show an optional Live Activity on the Lock Screen and Dynamic Island. All system surfaces are optional, user-controlled and read-only: they never create or change your fasting records.

PRIVATE BY DEFAULT Free to use with no advertising, analytics, tracking, subscription, HealthKit integration, cloud sync or developer-operated backend. Delete all uFast data from Settings whenever you choose. Deleting the app or losing the iPhone may permanently remove local records.

uFast is a personal record-keeping tool. It does not provide medical advice, diagnose, treat or guarantee health outcomes.