Loved by 150,000 fasters worldwide

Fast better.
Live longer.

The intermittent fasting tracker that disappears into your routine — eight zones, eight protocols, and a timer that stays out of your way.

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No account required Data stays on deviceFree forever
FastBreak app timer
90%
Ketosis · zone 414:23:18
Streak
23 days
0K+
Active fasters
0M+
Fasts completed
0.0
App Store rating
12languages
Worldwide
The product

Designed to disappear.

Four pillars. One quiet timer. The fastest path from intention to a finished fast.

TimerZonesInsightsNutrition
Timer
Timer

A timer
that just
works.

Start fasting in one tap. Track every minute, every zone, every milestone — without thinking about it.

  • 8 fasting protocols
  • Live zone progress
  • Background updates
Zones
Zones

Watch your
body change.

Eight fasting zones — from blood sugar drop to ketosis to autophagy. Visualize every stage as you cross it.

  • Real-time biology
  • Educational deep dives
  • Push at every milestone
Insights
Insights

Insights
that actually
mean something.

Track weight, body, photos and water — but more importantly, see how fasting reshapes them over weeks.

  • Weight & body trends
  • Progress photos
  • Streaks & badges
Nutrition
Nutrition

Eating, but
intentional.

Log what breaks your fast and what fuels you after. Calorie awareness, not calorie counting.

  • Smart food log
  • Macro overview
  • Eating-window tips
Inside the fast

Eight zones, one body.

Scroll through what happens, hour by hour, when you stop eating — from glucose burn to deep autophagy.

0–4 h

Anabolic

You've just eaten. Insulin is high; your body is storing energy from your last meal.

4–12 h

Catabolic

Insulin drops. Your body shifts from storing to using — first burning glucose, then glycogen.

12–16 h

Fat burning

Glycogen stores deplete. The body taps into fat for fuel and growth hormone rises.

16–18 h

Ketosis begins

Liver converts fat into ketones. Mental clarity sharpens. Hunger usually fades.

18–24 h

Deep ketosis

Brain runs on ketones. Inflammation drops, BDNF rises — the brain-fertilizer molecule.

24–48 h

Autophagy

Cellular cleanup begins. Old, damaged proteins are recycled. Repair mode is on.

48–72 h

Stem-cell renewal

Immune system regenerates. Stem cells multiply. Reserved for advanced fasters.

72 h+

Extended

Long fasts. Only attempted with medical guidance — never recommended for beginners.

Pick your rhythm

Eight protocols.
One you'll keep.

16h
fast · 8h eat
Stories

Quiet wins,
loud results.

“I lost 7 kg in three months without ever thinking about calories. The zone tracking is what hooked me.”

Marta P.−7 kg

“Finally an app that doesn't shame me. The interface is so clean I actually open it.”

Daniel R.16:8

“Energy through the roof by week two. The autophagy explainer alone is worth it.”

Anya S.Week 8

“Switched from another app. The premium feel is immediately obvious. Worth it.”

Jared M.−4 kg

“I'm 52 and finally found something that fits my routine. The 14:10 protocol is gentle.”

Yuki T.14:10

“The progress photos side by side at month three made me cry. Real change, real proof.”

Lucia C.−9 kg
Frequently asked

Quick answers.

Is intermittent fasting safe for beginners?
For most healthy adults, yes. Start with a gentle 12:12 or 14:10 window for a week, drink plenty of water, and listen to your body. People with diabetes, eating-disorder history, or who are pregnant should talk to a doctor first.
Will I lose muscle?
Not if you eat enough protein in your eating window and maintain resistance training. Short fasts (under 24 hours) actually elevate growth hormone, which is muscle-protective.
Does coffee break a fast?
Plain black coffee, plain tea and water do not break a fast. Anything with calories — milk, cream, sugar, sweeteners that spike insulin — does.
How fast will I see results?
Most people notice better energy and sleep within the first week. Visible body changes typically show up between weeks 3 and 8, depending on diet and consistency.
What's the best protocol to start with?
16:8 is the most popular and the easiest to sustain — fast overnight, eat between noon and 8 pm. If that's too aggressive, start at 14:10 and tighten the window each week.
Is FastBreak really free?
Yes. The core timer, zones, weight tracking and food log are free forever. You can also use the app without creating an account — your data stays on your device.

Start your
first fast tonight.

Free to use. No account needed. Sixty seconds to set up.

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