Ounces or milliliters
Choose oz or ml in Settings. Your recorded intake stays the same.
HydroFast for Android
Water tracking and fasting, together.
Log water in ounces or milliliters, manage your fasting timer, and see your daily progress in one Android app. Set reminders around your routine and keep your tracking history on your phone.
Currently free. No account required.
- US fluid ounces or mL
- Fasting timer with reminders
- Core tracking works offline
No account required
Set up your preferences on your phone and start tracking.
Android reminders
Schedule prompts and respond from notifications.
Stored on your device
Logs, sessions, and preferences remain on your Android phone.
Interactive product tour
Explore HydroFast
Choose a topic to see how HydroFast brings water, fasting, reminders, and daily progress together on Android.
Hydration
Water tracking that takes seconds
Log common amounts quickly, correct an entry when needed, and keep the daily goal visible.
- Quick and custom entries in US fluid ounces or milliliters
- Daily goal and remaining water
- Editable hydration history
Fasting
A fasting timer that keeps the plan clear
Follow the active session, see elapsed and remaining time, and choose a routine that fits your schedule.
- Start, pause, resume, end, and custom past start times
- 12:12 through OMAD and custom plans
- Live fasting and eating window details
Reminders
Reminders built around your day
Set hydration and fasting prompts around your routine, then respond quickly when a reminder appears.
- Hydration intervals and custom times
- Fasting start and completion reminders
- Android notification actions and snooze
Progress
See the pattern behind each day
Move from weekly context to a longer monthly view without separating hydration and fasting activity.
- Today, Week, and Month views
- Hydration and fasting charts
- History, completion, and consistency context
Achievements
Make daily consistency visible
Use streaks and achievement milestones as simple motivation for keeping water and fasting records up to date.
- Hydration and fasting streaks
- Unlocked and upcoming badges
- Wellness score for habit motivation
Personalization
Set HydroFast around your routine
Choose the goals, schedule, units, fasting plan, and appearance that make daily tracking feel familiar.
- Name, weight, and optional gender
- Wake and sleep schedule
- Water goal, units, and fasting plan
- Light, dark, and system appearance
A simple daily flow
Four everyday actions, one steady rhythm
Track water, run a fast, stay on schedule, and see progress without moving between separate habit apps.
- Track water
- Run a fast
- Stay on schedule
- See progress
Track water
Your 8 oz glass. Your 20 oz bottle.
Choose oz in Settings, open Water, and tap + Custom to enter the amount you drank. Half of a 32 fl oz bottle? Log 16 oz. Your goal, remaining water, and saved entries stay together.
- Quick amounts in oz or mL
- Custom water entries
- Edit and delete saved logs
Run a fast
Started at 8 PM, opened the app at 7 AM?
Give a new fast its actual start date and time. On a 16:8 plan, an 8 PM start leaves five hours at 7 AM the next day, assuming no pauses or clock changes. The timer follows your recorded start.
- Live elapsed and remaining time
- Pause and resume controls
- 12:12 through OMAD and custom plans
Stay on schedule
Set reminders around the day you already have
Hydration intervals, custom reminder times, and fasting prompts help keep daily tracking visible without requiring a remote push notification service.
- Hydration reminder intervals
- Custom reminder times
- Fasting start and completion prompts
See progress
Review the pattern behind each day
Move between Today, Week, and Month views to review hydration and fasting activity, then use history, streaks, and achievements for context.
- Hydration and fasting charts
- Today, Week, and Month views
- History, streaks, and achievements
Ready when your routine is
Keep water and fasting within reach.
A direct answer
What is HydroFast?
HydroFast is an Android app for tracking daily water intake and intermittent fasting in one place. It combines quick water logging, fasting session controls, reminder settings, progress charts, streaks, achievements, and Android quick actions.
- Log water in US fluid ounces or milliliters
- Start, pause, resume, and end fasting sessions
- Follow plans including 16:8, 18:6, 20:4, OMAD, or custom
- Use notification actions and an Android home screen widget
- Review Today, Week, and Month progress
No sign-in is needed for tracking. Voluntary support requests send information so we can reply. See what stays on your device.
HydroFast is a wellness and habit tracking app. It does not provide medical advice, diagnosis, or treatment.
Personal from the first screen
Built around your routine
Set the details that shape daily tracking once, then keep the app focused on the plan, units, schedule, and appearance you selected.
- Name, weight, and optional gender
- Wake and sleep times
- Daily water goal
- Fasting plan and experience
- oz or mL
- Light, dark, or system theme
Consistency without pressure
Daily habits stay visible
Reminders bring the routine back into view, history records what happened, and achievements mark simple tracking milestones.
Reminders that follow your schedule
Choose hydration intervals, custom times, and fasting prompts from one settings screen.
Learn moreOne history for both routines
Review water logs and fasting sessions together, or focus on either activity.
Learn more
Milestones that stay grounded
Use streaks and achievement badges as simple motivation for consistent tracking.
Learn more
The same focus, in every mode
Light, dark, or matched to Android
HydroFast supports light, dark, and system appearance modes, so the app can follow the way your Android device already looks.
Explore all HydroFast features
Fasting and hydration together
Water and fasting tracking in one Android app
HydroFast gives Android users one place to track water intake and intermittent fasting sessions. Quick water logging, flexible plans, a live fasting timer, reminders, history, and progress insights stay connected without turning the app into a medical service.
The focus is practical habit tracking: record what happened, see the current status, and review consistency over time.
Practical Android guides
Choose the tools that fit your routine
Two guides cover combined tracking and reminder schedules, so you can judge whether HydroFast fits before installing it.
Google Play Reviews
Loved by HydroFast users
5.0 on Google Play · 36 ratings · 35 written reviews
HydroFast is an Android hydration and intermittent fasting tracker. The reviews below are selected genuine reviews written by Google Play users.
HydroFast has been really helpful for me, especially during busy workdays. I often get so focused on work that I forget to drink enough water during my eating window while intermittent fasting. The hydration reminders help me stay on track, and having both water tracking and fasting in one app makes everything much easier to manage. Simple, useful, and great for building a consistent routine.
HydroFast is a great combination of a hydration tracker and intermittent fasting tracker. Logging water is quick, fasting schedules are easy to manage, and the progress stats make it simple to see how consistent you’ve been. I also like the clean interface and the ability to customize goals and reminders. Very useful for everyday habit tracking.
I use HydroFast every day to keep track of my water and fasting. The reminders help me stay on track, and I really like the reports because I can easily see how I’m doing over time.
Great in its simplicity I was looking for a simple app to track and manage my fasting cycles, and I’ve just found this one. I would gladly pay once for a lifetime Pro version if it allowed me to set a start time earlier than the current time, for those moments when I forget to log it straight away, and to delete unnecessary logs from the history. Updated 20th July 2026 Amazing update. This app is great. To anyone who wants to control hydration and fasting this is the app!
I requested a feature from this HydroFast application, and I was really impressed with the response. The team contacted me personally, listened to my request, and implemented the feature in a very short time. It’s rare to see developers who are this responsive and genuinely care about user feedback. Great app, excellent support, and an amazing development team. Highly recommended! 👏
This app is simple, clean, and very effective for tracking water and fasting. It helps me stay consistent with my fasting schedule and reminds me to stay hydrated throughout the day. The interface is easy to understand, even for beginners, and I really like how it shows progress clearly without unnecessary complexity. It keeps me disciplined and focused on my health goals. Overall, a very useful app for anyone serious about intermittent or water and fasting. Highly recommended
Clear answers
HydroFast FAQ
Cost, accounts, ounces, offline use, and the fasting controls to check before you install.
What is HydroFast?
HydroFast is an Android hydration and intermittent fasting tracker for keeping daily routines organized.
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.
Can I track water in ounces instead of milliliters?
Yes. In HydroFast, open Settings, find Units, and choose oz. Water amounts use US fluid ounces, with 1 fl oz equal to about 29.57 mL. You can switch back to ml without changing the amount of water recorded in your history.
Does HydroFast work offline?
Yes. Core water and fasting tracking works from data stored on your device, and reminders are scheduled locally. Downloading the app and sending a Help and Support request require internet access. There is no cloud sync or backup-and-restore feature.
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.
Can I track water during fasting?
Yes. Water logs and the fasting timer run independently, so you can keep logging water through a fast.
Can I use HydroFast for 16:8 fasting?
Yes. 16:8 is a preset, next to 12:12, 14:10, 18:6, 20:4, OMAD, and a custom option.
Android app
Bring water and fasting into one Android routine
HydroFast is currently free to use for water tracking, fasting sessions, reminders, history, and progress insights.