Is there a good app for use an intermittent fasting timer?
Poorly Executed: 34 apps already serve this, and 11 data points mined from real user reviews across 2 sources show where they fall short. The right features exist but the execution is buggy, dated, or painful. Out-execute it.
Data refreshed September 28, 2026 · scores recompute weekly as new reviews are mined, so re-check before you build.
What users complain about
The most common complaints behind apps that try to use an intermittent fasting timer, mined and clustered from real reviews:
| Complaint area | Type | Mentions | What a user said |
|---|---|---|---|
| interval-timer accuracy | bug | 2 | il timer non preciso, la scansione dei periodi avviene con un'anticipo di 40/45". |
| interval metronome timing | bug | 2 | un coup le metronome s'arrête apres une minute, des fois non et à un moment il ne s'arrête plus du tout |
| no auto start/stop fasting with notifications | missing-feature | 1 | missing such basic features as auto start fasting and auto stop fasting with notifications |
| no fasting tracking | missing-feature | 1 | They also don’t have a way to track fasting |
| interval workout timer resets | bug | 1 | me hace repetir varias veces el primer intervalo, ya casi cumplo el tiempo y se reinicia |
| between-exercise rest timer | missing-feature | 1 | Please add a separate rest timer after the completion of an exercise |
| interval workouts pause/skip and miss recorded intervals | bug | 1 | it pauses doing my workout and speeds up the interval...did not record the last two intervals |
| interval timing with feedback | missing-feature | 1 | Would love to see ability to add interval timing w/ feedback |
| changing meal times only works intermittently | bug | 1 | changing times of meals only works half of the time |
Apps that already serve this
| App | Rating | Ratings | Price |
|---|---|---|---|
| 72Hour Fasting Timer | 4.3 | 3 | $1.99 |
| TimeFast | 0.0 | 0 | $6.99 |
| Intermittent Fasting - Fasted | 5.0 | 1 | $4.99 |
| AllyFast: Fasting Tracker | 5.0 | 19 | $0.99 |
| Bariatric Meal Timer | 4.4 | 69 | $1.99 |
| Interval Timer Pro | 4.5 | 598 | $2.99 |
| Strengthiness Interval Timer | 5.0 | 1 | $0.99 |
| Standard Interval Timer | 4.8 | 182 | $0.99 |
Should you build it?
The right features exist but the execution is buggy, dated, or painful. Out-execute it. Opportunity here scores 28 out of 100 — a function of demand, how crowded the field is, and how badly the existing apps perform. Use the live map to compare it against adjacent tasks.
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