Free fasting timer. Wear OS watch & extras: monthly or yearly subscription
FastHour is a fasting timer for Android phones and Wear OS watches: choose a schedule, tap start and see how long is left, everywhere. FastHour is not a medical device and does not diagnose, treat, cure, or prevent any medical condition.
Open and start
No questionnaire, no account, no sign-in. The first screen has a start button, set to 16:8. Explanations and settings are there when you want them.
Every intermittent fasting schedule
• 12:12, 14:10, 16:8, 18:6, 20:4 and 23:1 (OMAD, one meal a day)
• Your own duration in hours and minutes
• Extended fasts of several days
• Open end: no goal, you stop when you want
• A weekly plan with a reminder or an automatic start
Your eating window counts down too
After your fast, FastHour counts down your eating window and shows when your next fast begins.
Fix it afterwards
Forgot to tap start? Move the start back to last night, change the end, or add a fast you missed.
Always in view
• A home screen widget
• An ongoing notification with a countdown, and a Live Update on Android 16
• A Quick Settings tile and app shortcuts
On your wrist with Wear OS (Plus)
• A watch app to start, end and adjust your fast
• A tile that counts down live
• Complications for your watch face: short text, long text and a progress ring
• Works without your phone and syncs both ways when they reconnect
The time is right everywhere
FastHour does not run a counter in the background. It stores the moment you started and calculates everything from there. That is why the app, widget, notification, tile and complication always show the same time, also after a night with the screen off and across daylight saving changes.
Counted per fast
A three-day fast counts as one fast of 72 hours. A fast over midnight never breaks your streak.
Also included
• History with a calendar, and statistics: average, total, longest fast and streak
• Water and weight in kg, lb or stone, and you can hide them
• The fasting phases explained, with sources, and tips for fasting safely
• Export to CSV and JSON, import, and Android backup
• Dark mode, Material You colors, 12 or 24 hour clock
• In English, German and Dutch
What is free and what is Plus
Free, with no time limit and no ads: the timer, every schedule, your history, the widget, the ongoing notification and Live Update, water and weight, the fasting phases, and export and import.
Plus is an optional monthly or yearly subscription for the Wear OS app with tile and complications, Health Connect (weight, water and meals), extended insights and color themes. You see the price in your own currency in the app and in Google Play before you buy. There is no trial and no card upfront, and you can cancel any time in Google Play.
No account, no ads, no trackers
Your fasting log, weight, water and notes stay on your device. Phone and watch sync directly with each other. A diagnostic report only leaves your device if you allow it or send one yourself.
Report a problem
Something not right? "Report a problem" in the app sends us a short technical report with a code, and the app tells you when it is fixed.
If you have diabetes, take medication, are pregnant or breastfeeding, are under 18 or have had an eating disorder, talk to your doctor before you fast.
Novedades
First release of FastHour: the fasting timer with every schedule, the eating window, history, widget, ongoing notification and the Wear OS app with tile and complications. Prices are shown in your own currency. Something off? Please use "Report a problem" in the app.