Fasted - Intermittent fasting

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About this app

A free fasting tracker and fasting timer in one app. Fasted runs the clock, names the phase your body has reached, and keeps the whole record.

No account. Nothing to pay to start. Your first fast can begin tonight.

THE FASTING TIMER, FREE
One tap starts it. Fasted counts every minute and marks the phase you have moved into:
- Fed State: 0-4h
- Catabolic: 4-8h
- Fat Burning: 8-12h
- Ketosis: 12-16h
- Deep Ketosis: 16h and beyond

A live timer sits on your home screen and updates in real time. It costs nothing and it does not ask you to sign up first.

ALL SIX PROTOCOLS, ALSO FREE
Not a sampler — the whole set, on the free tier:
- 16:8 intermittent fasting: the most common. Fast 16 hours, eat inside 8.
- 18:6 fasting: a longer stretch in the fat-burning window.
- OMAD: One Meal A Day. Nothing left to plan.
- 5:2: eat normally five days, restrict two.
- 20:4 fasting: for experienced fasters aiming at deep ketosis.
- 12:12: the easiest way in.

Custom windows, set to your own start time and length, come with Pro.

KETOSIS, TRACKED BY THE HOUR
The last two phases are the point for a lot of fasters. Fasted marks the hour a fast crosses into ketosis and the hour deep ketosis begins. If you are eating keto alongside it, blood ketones and glucose go into the same log, so the fast and the numbers behind it read off one screen.

WHAT THE FREE VERSION INCLUDES
Fasted is a free fasting app first and a subscription second. Without paying anything you get:
- Fasting timer with all 5 metabolic phases
- Six protocols: 16:8, 18:6, OMAD, 5:2, 20:4 and 12:12
- Streak tracking and the full history calendar
- Water logging
- Share cards for a finished fast, a streak or an achievement
- Data export in CSV and JSON
- No account required

FASTED PRO, A PAID SUBSCRIPTION
Everything above stays free. Pro adds:
- Buddy system: fast with a partner in real time
- Multi-week fasting programs with automatic scheduling
- Weight, electrolyte and blood level tracking
- Hunger map and fasting heatmap
- Body measurement tracker
- Advanced stats and long-term trends
- Custom fasting protocols
- Unlimited streak freezes and fast notes

FAST WITH A PARTNER
Pair with a friend and see their fasting timer live. Send reactions, leave comments, watch each other cross into fat burning and ketosis. Fasted is the only intermittent fasting app with a live partner system. Accountability outlasts willpower.

MULTI-WEEK PROGRAMS
Plan further ahead than tonight. Assign a protocol to each day, set automatic start times, and let the program run itself. A fasting coach that does not charge by the hour.

STREAKS THAT HOLD UP
Every finished fast extends the chain. Fasted tracks the streak, sets off confetti at the milestones, and gives streak freezes for the weeks life organizes for you. There are 18 achievements in 5 categories, and share cards for whichever ones you want to post.

THE REST OF THE LOG
- Water intake, with a daily goal
- Weight, charted over time, so weight loss shows as a line and not a guess
- Electrolytes: sodium, potassium and magnesium
- Body measurements: waist, hips, chest and thighs
- Blood levels: ketones and blood glucose
- Hunger intensity across 24 hours and 7 days, so you can see which hour of which day is the hardest

WHY IT WORKS
Intermittent fasting is not a diet. It is a schedule. Most people start it for weight loss and stay because the schedule is easy to keep. Nothing is banned, nothing is weighed, no calorie is counted — you decide when you eat and leave the rest alone. Research consistently shows intermittent fasting reduces body fat, improves insulin sensitivity and triggers autophagy (cellular repair), and for most people it is the approach that finally sticks.

Pick a favourite protocol, start the free timer tonight, and let the streak build from there.

Terms of service: https://getfasted.app/terms
Privacy policy: https://getfasted.app/privacy
Free fasting tracker & fasting timer: 16:8, OMAD, ketosis phases, streaks.
Updated on
Oct 4, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • No data shared with third parties
    Learn more about how developers declare sharing
  • This app may collect these data types
    Personal info, App activity and App info and performance
  • Data is encrypted in transit
  • You can request that data be deleted

What’s new

Sign-in now works on networks that used to block it: Google, Apple and email
A clear message when your network blocks the connection, instead of "No internet"