INTERMITTENT FASTING TIMER

Fasting, made
a habit.

Fasting Tracker is a free intermittent fasting app for iPhone, iPad and Apple Watch. Start a fast in one tap. Sunny shows what your body may be doing, hour by hour, and cheers you on until fasting is simply part of your day.

Download on theApp Store

Free on the App Store, in 31 languages.

See how it works

Fasting Tracker on iPhone 18 Pro during a 16:8 fast: Sunny in the middle of the ring, 11 hours 30 minutes elapsed, 71 percent of the goal, a 9-day streak and the current stage, Blood Sugar Falling

SIMPLE BY DESIGN

No calorie counting
No food logging
No account, no ads
Research, with sources

HOW IT WORKS

Start. Follow.
Keep going.

Starting a fast is easy. Fasting Tracker is built for the hard part: keeping it up.

A plan you can keep.

Start gently with 13:11 or go straight to 16:8. Not sure? Answer a few questions and get a plan that fits you.

Know what's happening.

The ring shows how far you've come and the stage your body may be in, from blood sugar falling to fat burning.

A streak worth keeping.

Every fast grows your streak. Collect 57 badges, with a gentle reminder before your eating window closes.

YOUR PROGRESS

Every hour
counts.

Every fast is saved, so you can watch your progress add up, week after week.

Your average, longest and total time fasted
Your mood and notes for every fast
With Pro: your trends, best days and stages reached

Download on the App Store

Fasting Tracker's History tab on iPhone 18 Pro: 66 fasts completed, a 16 hour 56 minute average, a 19 hour 48 minute longest fast, 1,118 hours fasted in total, and a 7-day chart against a 16-hour goal — Your week, against your goal.

Fasting Tracker's weight details on iPhone 18 Pro: the trend weight, a weight goal with the progress so far and the date it could be reached at the current pace, and a chart of weigh-ins with the trend line and the goal — Your trend, your goal and when you could get there.

WEIGHT AND WATER

Your goal,
in sight.

Set a goal weight and see when you could reach it at your current pace. A trend line hides the daily ups and downs, so you see real progress.

Your BMI, and how far is left
A celebration when you get there, and help staying there
Water in one tap, toward a daily goal

BEYOND THE TIMER

Built into
your day.

On your wrist.

Follow your fast and log your weight on Apple Watch.

Always in view.

Widgets and a Live Activity keep your fast on your Lock Screen and in the Dynamic Island.

Hands-free.

Ask Siri to start or end a fast, or how long you've been fasting.

Learn as you go.

23 short guides with quizzes and the research behind them. The first one is free.

Private by design.

No account and no ads. Your fasts stay on your devices and in your own iCloud.

PLANS AND TOOLS

Find your
rhythm.

Compare plans, work out your eating window, and get quick answers to the questions every new faster asks.

Fasting plans

Free tools

Does it break a fast?

Hour by hour

The app

Compare every plan

LEARN

Fasting,
explained.

From your first fast to the science of autophagy: short guides based on the research, each with its sources.

All guides

A note on health

Fasting Tracker is designed for general wellness and is not a medical device. Fasting is not right for everyone. If you are pregnant, diabetic, have a history of eating disorders or take medication, talk to your doctor first, and before any extended fast.

AVAILABLE NOW

Your next fast
starts today.

Free to download for iPhone, iPad and Apple Watch. Pro adds longer plans, deeper insights and every guide.

Download on the App Store

Questions or ideas? Write to hi@flawless.studio.

Fasting, made
a habit.