Fasting · 1 of 17 modules

See if 16:8 actually works for you.

tr8ck logs your fasting window and connects it to sleep, mood, weight and energy — in your numbers, not the average podcast guest.

16:8, 18:6, OMAD or your own Connects to sleep + mood No streak guilt
tr8ck fasting screen

You tried 16:8 streak.
You tried fasting podcast.
You tried water-only Sunday.
And no idea if it is doing anything.

Zero gave you a timer. The podcasts gave you a religion.

Nobody told you if your body is actually responding.

Zero A 16:8 spreadsheet "Trust the process" Andrew Huberman Vibes
How fasting works in tr8ck

Three steps. One real answer.

Stop the timer. Start the answer.

1

Pick your window.

16:8, 18:6, OMAD, your own. tr8ck handles them all. Voice-log your last meal — done.

tr8ck food
2

tr8ck cross-checks the day.

Sleep, mood, training, weight. tr8ck sees how your fast lands — not just whether you finished it.

tr8ck sleep
3

See if it is working.

"On 16:8 days you sleep 22 minutes more." Or you do not. tr8ck tells you the truth.

tr8ck progress
What you actually get

A fasting tracker that asks the only question that matters.

Forget the streak. Is it actually moving your body?

Smart timer
Smart timer
16:8, 18:6, OMAD or your own.

Voice-log your last meal. tr8ck handles the timer in the background. No fiddly buttons.

Fasting → Sleep
Fasting → Sleep
See the eating window that wrecks your sleep.

Late-night meals are the #1 sleep killer tr8ck detects. The Fasting module shows you yours, by name.

Fasting → Mood
Fasting → Mood
See if hunger is hurting your day.

Some people thrive on a long fast. Some go to pieces by 11am. tr8ck shows you which one is you.

Weight trend
Weight trend
Real trend, not Tuesday's number.

tr8ck filters out the daily scale noise and shows you the actual response across your fasting protocol.

GLP-1 friendly
GLP-1 friendly
Works with or without meds.

Combining IF with GLP-1? tr8ck handles both. See whether the fast is adding anything on top of the medication.

No streak shame
No streak shame
Miss a day. Move on.

tr8ck does not run guilt loops. Miss a day, log it, move on. The pattern beats the streak.

The difference

Other apps speak in numbers.
tr8ck speaks in answers.

If you wanted a doctor's report, you would have gone to a doctor. You came here to feel better.

Other apps say

"Fasting streak: 23 days. Average window: 16h 42m. Longest fast: 18h 15m. Total fasted: 380h."

…and you have no idea what to change tomorrow.
tr8ck says

"16:8 actually works for you."

Eat between 11am and 7pm. Skip the 9pm snack. You sleep 22 min more on those nights.
Real people. Real wins.

"It told me what no other app could."

"Quit Zero. Streak app, no insight. tr8ck told me 18:6 was hurting my sleep. Moved to 16:8 — sleep fixed in a week."

H
Henrik V.
Switched from Zero

"I thought I needed to fast longer. Turns out 14:10 is my number. Mood, sleep, weight all moved. Saved me a lot of misery."

Y
Yuki H.
Stopped overfasting

"Combining IF with Wegovy was confusing. tr8ck made it readable. Lost 9kg in 3 months and slept the whole way."

D
Daria L.
IF + GLP-1
FAQ

Questions, answered like a human.

How is tr8ck different from Zero or other fasting apps?

Zero is a timer. tr8ck is a connector — it shows you whether your fast actually moves sleep, mood, weight and energy. Same data, different question.

Does it support 16:8, 18:6, OMAD?

Yes — and any custom window you want. tr8ck handles all of them and tells you which one your body actually responds to.

Can I use it with Ozempic or Wegovy?

Absolutely. The Medication module connects to the Fasting module. See whether IF is adding anything on top of the GLP-1 effect — in your data.

Will breaking my fast ruin my data?

No. We do not run streak shame. Miss a day, log it, keep going. The pattern across weeks beats the streak every time.

Is the Fasting module free?

Yes, free forever. Pro ($4.99/mo, billed yearly) unlocks the deeper correlation insights — including IF + GLP-1 + sleep.

Stop fasting on faith.
Start fasting on evidence.

Free forever. No card. tr8ck tells you whether your fast is actually doing anything — for you, in your data.

Free forever plan · No credit card · Cancel any time