12:12
Balanced fasting and eating windows for beginners.
Intermittent fasting tracker for Android
A fasting timer that fits your actual start time
Start, pause, resume, and end a fast on Android. Forgot to start the timer? Record when your fast began using a custom start time. Keep water intake, reminders, and fasting history together, with no account required.
- Currently free on Android
- Live fasting timer
- Android reminders
What is HydroFast fasting tracking?
HydroFast runs intermittent fasting sessions on Android with a live timer, flexible plans, reminders, history, and progress views. Water tracking is available in the same app.
- Start, pause, resume, and end fasting sessions
- Follow 12:12, 14:10, 16:8, 18:6, 20:4, OMAD, or custom fasting plans
- View elapsed and remaining fasting time
- See fasting status and eating window information
- Review fasting history and progress charts
- Use Android notification actions and widget quick actions
HydroFast is built as a fasting tracker app for Android and intermittent fasting timer while also supporting hydration tracking in the same app.
Choose a fasting plan that fits your routine
Choose a preset or set custom fasting and eating windows that total 24 hours. Fasting is optional during setup; select a plan when you are ready to use the timer.
14:10
A gentle step toward longer fasting routines.
16:8
A popular intermittent fasting schedule with a 16-hour fast.
18:6
A longer fasting window for users who prefer fewer eating hours.
20:4
A focused fasting routine with a shorter eating window.
OMAD
One Meal A Day style fasting support.
Custom
Create a custom fasting and eating window that completes 24 hours.
HydroFast supports custom plan validation so fasting hours plus eating hours always equal 24 hours.
Getting started
Forgot to start your fasting timer?
You can give a new session the date and time when your fast actually began. You do not need to pretend the fast started when you opened the app.
Select a fasting plan
Open the fasting plan screen and choose a preset or a custom plan. The plan determines the target duration.
Set the actual start
Tap Set custom start time and choose a past date and time. Future start times are not accepted.
Start and review the session
Start the fast with that time and check the timer. Pause and resume remain available. This flow creates a session; it does not change an existing session's start time.
Control your fast with a clear fasting timer
HydroFast gives users simple fasting controls and clear session states so they always know whether a fast is idle, active, paused, or completed.
Start fast
Begin a fasting session based on the selected fasting plan.
Pause fast
Pause an active session when needed.
Resume fast
Continue a paused fasting session.
End fast
Finish a fasting session and save it to history.
Elapsed time
See how long the current fast has been running.
Remaining time
See how much time remains in the fasting window.
See your fasting and eating window
The selected plan and active session show whether you are fasting, eating, paused, or finished.
Fasting window
Know when the fasting period is active.
Eating window
See when the eating window is expected.
Completion status
Understand whether a session is active, paused, or completed.
Fasting reminders for Android
Fasting reminders arrive as ordinary Android notifications, scheduled on the device rather than through a remote push service. There are prompts for the start of a fast, its completion, and a gentler nudge during the day.
Fasting start reminder
Receive an optional prompt at your profile's wake time when a fasting plan is saved.
Fasting completion reminder
Get notified when a fasting session reaches completion.
Motivation reminder
Receive a gentle reminder during the day.
Start and end actions
Start Fast uses your saved plan; End Fast ends the current session. The app's snooze action belongs to water reminders.
HydroFast supports fasting start and completion alerts through Android notification scheduling.
The fasting reminder app for Android guide explains schedule examples, notification actions, and delivery troubleshooting.
Start or end fasting from Android quick actions
Start and end a fast from the buttons on a notification, or check where the current session stands from the home screen widget.
Start Fast notification action
Start a fasting session from an Android notification.
End Fast notification action
End a fasting session from an Android notification.
Widget fasting status
View active fasting status from the Android home screen widget.
Review fasting history and progress
Session history, charts, and total fasting hours provide a clear record of your routine over time.
- Fasting session history
- Fasting bar chart
- Total fasting hours
- Today, Week, and Month insights
- History filter for fasting sessions
- Fasting streak support
- Achievement badges
- Wellness score
Hydration and fasting in one Android app
HydroFast is more than a fasting tracker app for Android. It also includes water intake tracking, hydration reminders, progress charts, history, streaks, achievements, and daily wellness tools in one app.
HydroFast supports users looking for a 16:8 fasting tracker and OMAD fasting tracker while keeping hydration and reminders connected in the same routine.
Fasting screenshots
Fasting tracker FAQ
Can I record a fast with an earlier start time?
Yes. Before starting a session, select a fasting plan and choose Set custom start time. Pick the date and time when your fast began, then start the session. Future start times are not accepted. This sets a new session's start time; it does not edit an existing fast.
Is HydroFast free to use?
Yes. HydroFast is currently free to use on Android, with no purchase required for water tracking, fasting timers, reminders, or progress history.
Does HydroFast require an account?
No. You complete a local profile setup, but do not create an account or sign in. Tracking data stays on your device. Sending a voluntary Help and Support request shares the information needed to handle that request.
What is the HydroFast fasting tracker?
HydroFast is an Android fasting tracker with start, pause, resume, and end controls, plus a live timer and progress history.
Does HydroFast support 16:8 fasting?
Yes. 16:8 is one of the presets, next to 12:12, 14:10, 18:6, 20:4, OMAD, and a custom plan.
Can I create a custom fasting plan?
Yes. Set your own fasting and eating hours; the two windows have to add up to 24 hours before the plan saves.
Can I pause and resume a fast?
Yes. Pausing keeps the session open so you can pick it up again instead of starting over.
Does HydroFast show fasting progress?
Yes. Elapsed and remaining time stay on screen, along with the current status and when the eating window opens.
Does HydroFast have fasting reminders?
Yes, for both ends of a session: one to begin, one when the fast completes.
Can I start or end a fast from Android notifications?
Yes. Start Fast and End Fast are buttons on the notification itself.
Does HydroFast include fasting history?
Yes. Completed sessions stay in your history, and progress rolls them up into charts and total hours.
Is HydroFast a medical fasting app?
No. HydroFast is a wellness and habit tracking app. It does not provide medical advice, diagnosis, or treatment.
Android app
Start and manage your fasting routine
Pick a plan from 12:12 to OMAD, run the timer with pause and resume, and keep every finished session in your history.