Fasting timer
A gentle ladder from 12:12 to 16:8 and beyond, with your window placed around your actual day.
ExploreIntermittent fasting, done gently
Eat in rhythm.
A fasting timer, food log and AI coach that learns from your own numbers.
Free on the web today. iOS and Android coming soon.
How it works
Three steps, at your pace
- 01
Tell the coach about you
Two minutes on your numbers, your routine and, only if you want to share them, any health conditions or medicines. A safety check keeps fasting off the table for people it is not right for.
- 02
Start gently
Most people begin at 12:12, an overnight fast, for two to three weeks. You step up only when it feels easy, never because a streak demands it.
- 03
See it in your numbers
Consistent weeks, protein hit rate, and the trend in weight, fat and muscle. Not a score, just what actually happened.
The evidence, plainly
In trials, time-restricted eating works about as well as cutting calories. Its appeal is simplicity: one rule about when, instead of counting everything.
It is not magic, and we will not pretend it is. Whether it suits you is something your own numbers will show within a few weeks.
Read the scienceWhat you get
Built to keep you going
Rhythm
One rule about when you eat, set around your mornings, your work and your evenings. No calorie maths at every meal.
Strength
A daily protein target and a nudge toward strength training, so the weight you lose is fat, not the muscle you want to keep.
Clarity
Your own data, plainly: what you did, what changed, and what to try next. No guesses, no hype.
Built around real food
From dal to Greek yoghurt
The food list starts with what people actually cook, with protein and micronutrients for each serving. Add anything that is missing in a few taps.
- Chicken breast 150 g46.5 g
- Paneer 100 g18.3 g
- Firm tofu 100 g17 g
- Greek yoghurt 150 g15.3 g
- Dal 1 bowl7 g
- Egg 1 large6.3 g
Protein per serving, from the app’s food list.
Meet your coach
Answers from your data, not a script
Ask how it is going and the coach looks at what you actually logged. It shows the figures it used, so you can check its working.
What it will not do: diagnose, read lab results, or tell you to change a medicine. For anything medical, it sends you to your doctor.
Example conversation
Am I actually sticking to this?
Mostly, yes. You finished 11 of your last 14 fasts, and the three you stopped early were all on Saturdays. A later window at weekends might be easier to keep than pushing through.
Fasts finished · 11Finish rate · 79%Weight · −1.4 kg
From your last 14 days of fasts and weigh-ins.Safety first
The guardrails are the feature
A health check before any plan
Pregnancy, type 1 diabetes, a history of disordered eating, insulin or sulfonylureas, being under 18 or underweight: Metabo will not build a fasting plan.
Nothing past 24 hours on your own
Daily schedules only. Longer fasts are locked unless a clinician is supervising, because that is how they are run in practice.
No medicine advice, ever
The coach never suggests changing a medicine or its timing. If you share a condition, your plan asks you to show it to your doctor first.
No disease claims
Metabo is a wellness app. It does not promise to treat, reverse or prevent anything, and it does not read your lab results.
Start your first fast tonight.
Finish dinner, start the timer, and let the coach take it from there.
Start free on the webComing soon to theApp StoreComing soon onGoogle Play