Tap "Start fast". Tap "End fast". That's it.
Fastrail is an intermittent fasting timer for people who just want to record their fasts and get on with the day. No quiz before you start, no locked features and no subscription. Pick a plan on one screen and the timer is running.
Get it on Google Play
A timer that stays out of your way
A big ring shows hours fasted and time left to your goal. Start and end are one tap each, from the app or the home screen widget.
16:8 to OMAD, or your own hours
Plans for 13:11, 14:10, 16:8, 18:6, 20:4, OMAD 23:1 and 36 hours, or type any number of hours. Every plan is free.
Edit start and end times, any day
Started before you tapped? Set the start or end time to yesterday, today or tomorrow. Edit or delete any fast in your history.
Add fasts you did before
Log fasts from before you installed the app so your history and streak are complete.
Keep going past your goal
When you reach your goal, the alert has "Keep going" and "End now" buttons. Long fasts are counted in hours, not squeezed into one day.
Progress in the status bar
Optional status bar progress and a reminder 1 hour before your fast ends, so you know where you are without opening the app.
Weight and water
Log weight in kg or lb with a 30-day graph (a goal is optional), and tap + to count glasses of water.
Your data stays on your phone
No account. Export a backup file and import it on your new phone. Supported by ads; every feature is available to everyone.
FAQ
- Is Fastrail free, or do I need a subscription?
- It is free and supported by ads. There is no subscription and no feature is locked, including OMAD and custom plans.
- I forgot to tap "End fast". Can I edit the end time?
- Yes. Open the fast and change the start or end time to any time yesterday, today or tomorrow.
- Can I add fasts I did before I installed the app?
- Yes. In History, add a past fast with its start and end time. It counts toward your totals and streak.
- Can I see how long I've fasted without opening the app?
- Yes. Turn on status bar progress, or add the home screen widget that shows elapsed time with a one-tap start/end button.
- Can I get a reminder 1 hour before my fast ends?
- Yes. Fastrail can remind you 1 hour before the end and when you reach your goal. If alerts are late on your phone, allow notifications and turn off battery optimization for Fastrail.
- What if I want to fast longer than planned?
- Tap "Keep going" on the goal alert. The timer keeps counting and the whole fast is saved in hours.
- What happens to my records if I change phones?
- Export a backup file from Settings and import it on the new phone. Nothing is uploaded unless you move the file yourself.
- Is Fastrail medical advice?
- No. It is a tracking tool. Talk to your doctor before starting intermittent fasting, especially if you are pregnant, diabetic or taking medication.