Faaast for iPhone

The fasting tracker you’ll keep.

Start a fast and every hour you get through fills a block. You can see how far you’ve come, and the last few hours get a lot easier.

Download on theApp Store Free on iPhone · No sign-up · Optional Pro
Faaast Tracking screen: a calendar of fasts
Faaast Achievements screen

Start in a tap.

See every hour you’ve done.

Build a streak, day by day.

Your data stays with you.

A fast, start to finish

01

Pick your fast and start.

16:8 means 16 hours without food and an 8-hour window to eat. Choose that, 18:6, 20:4, one meal a day, 36 hours or your own length. Started late? You can change the start time afterwards.

02

Every hour fills a block.

The clock still counts the minutes, but the blocks show the bigger picture: 13 done, 3 to go. It’s easier to keep going when you can see it.

03 PRO

Know what’s happening in your body.

Faaast shows the stage you’re likely in, from digesting your last meal to burning fat to ketosis, and lets you know when you reach the next one. Log water and electrolytes as you go.

04

Go past your goal and the flames come out.

Every hour after your goal shows up as a flame block. It’s a small touch, but it’s surprisingly hard to stop at one.

05

End the fast, mark the day.

Tap End fast and the day fills in on your calendar. Fast on days in a row and they join into a streak.

Timer styles

Pick a timer
you like looking at.

  1. Hour blocksThe original. One block for every hour.
  2. Flip clock PROBig digits that flip over every second.
  3. GaugeA dial that moves towards your goal.
  4. Filling discA circle that fills up as the hours pass.
  5. Departure board PRODot-matrix numbers, like a train station board.

Ticks, Digital and Countdown are in the app too.

Tracking

Watch your month
fill in.

Each fast goes on the day it ends. Days in a row join into streaks, so a good week is easy to spot, and so is the day you missed.

  • Switch between goals reached and hours fasted
  • See how this month compares with last month
  • Tap a day to edit its fasts, water and weight
  • Find out what time you usually start

And there’s more

More than
a timer.

Me

Your numbers, in one place.

Your average and longest fast, total hours and best streak. With Pro, your weight on a chart, heading for your goal.

Achievements

62 badges to collect.

For your first fast, your 100th hour, a perfect week, and a few hidden ones you’ll have to find yourself.

Achievements screen with colourful badges

Widgets

Check in without opening the app.

FASTING13:25:082:34:52 to goal
THIS WEEK49hof 80h

Widgets for your Home Screen and Lock Screen. One of them can start or end a fast right there.

Progress photos

See the change the scale misses.

Take a photo each month. A faint outline of the last one helps you stand the same way, so the two line up side by side. They stay on your iPhone, and you can lock them with Face ID.

Two progress photos side by side

Light and dark

Easy on the eyes at night.

Faaast follows your iPhone’s light or dark setting. You can pick the app icon too: Ink, Paper or Ember.

Faaast in light mode Faaast in dark mode

Recaps

A recap of every week and month.

Your fasts, hours, longest fast and best streak on one card, in three styles. Share it or keep it.

A monthly recap card

Privacy

Your data stays
on your iPhone.

0accounts to make
0ads
0data sold
0cookies on this site

Your fasts, weight and photos live on your iPhone, not on our servers. Turn on iCloud backup and they go to your own iCloud. Coming from another app? Import your history from a CSV or JSON file, and export everything whenever you like.

Faaast Pro

Everything you need
is free.

The timers, calendar, records, weight, progress photos, widgets and every badge cost nothing. Pro is for when you want more detail on each fast.

  • 🔥
    Fasting stagesSee what your body is likely doing, hour by hour, and get a nudge at each new stage.
  • 💧
    Water and electrolytesLog them with one tap, right under the timer.
  • 📉
    Weight chart and Apple HealthSee your weight trend against your goal, kept in sync with Apple Health.
  • ☁️
    iCloud backupBacks up to your own iCloud by itself. On a new iPhone, restore everything in one tap.
  • ⏱
    Three more timer stylesFlip clock, Countdown and Departure board.
  • 📸
    Daily progress photosTake one every day, not just once a week or month.
Yearly€3.33 / month
SAVE 44%€39.99
MonthlyCancel any time
€5.99
LifetimePay once, keep forever
€79.99
Download Faaast

Start Pro from inside the app. Prices shown in euro; the App Store shows your local price. Subscriptions renew automatically unless cancelled at least 24 hours before the end of the period. Manage or cancel in your App Store account settings.

The short version

Faaast at a glance

What it is
An intermittent fasting tracker for iPhone. It times your fasts, shows each hour as a block, and keeps every fast on a calendar.
Price
Free to download and use. Faaast Pro is optional: €39.99 a year, €5.99 a month, or €79.99 once. Prices are in euro; the App Store shows your local price.
Fasts
16:8, 18:6, 20:4, OMAD, 12:12, 14:10, 36 hours, or any length you choose.
Free features
Five timer styles, a calendar with streaks, your records, a weekly goal, weight in kg, lb or stones, weekly or monthly progress photos, Home Screen and Lock Screen widgets, 62 badges, weekly and monthly recaps, light and dark mode, and import and export (CSV or JSON).
Faaast Pro
Fasting stages with alerts, water and electrolytes, a weight chart with Apple Health sync, automatic iCloud backup, three more timer styles (Flip clock, Countdown, Departure board), and a progress photo every day.
Privacy
No sign-up and no ads. Your fasts, weight and photos stay on your iPhone, and go to your own iCloud only if you turn on backup. This website counts visits anonymously, without cookies.
Contact
hi@arecon.eu · Support · Privacy policy

Questions

What does Faaast do?

It times your fasts. Start one when you finish eating, watch the hours fill, and end it at your next meal. Each fast goes on a calendar, so over the weeks you can see your streaks, your records and how you’re getting on. You can track your weight and take progress photos in the same app.

Is it free?

Yes. Timing fasts, the calendar, records, weight, progress photos, widgets and all 62 badges are free, with no time limit. Faaast Pro adds fasting stages, water and electrolytes, a weight chart, Apple Health, iCloud backup and three more timer styles.

Do I need an account?

No. Open the app and start, there’s nothing to sign up to. Your fasts, weight and photos stay on your iPhone, and go to your own iCloud only if you turn on backup.

What do 16:8 and OMAD mean?

They describe how long you fast. 16:8 is 16 hours without food and an 8-hour window to eat. 18:6 and 20:4 work the same way. OMAD means one meal a day, which is about 23 hours of fasting. Faaast also has 12:12, 14:10, 36 hours, or any length you set.

Can I bring my history from another app?

Yes. Export your fasts from your old app as a CSV or JSON file, then import them in Faaast from Settings → Your data. You can export everything from the same place.

Can I cancel Pro any time?

Yes. Go to your iPhone’s Settings → your name → Subscriptions. Lifetime is a one-off purchase, so there’s nothing to cancel.

Is this medical advice?

No. Fasting stages are typical timings, and everyone is different. Don’t fast without medical advice if you’re pregnant or breastfeeding, under 18, have had an eating disorder, or take insulin or other glucose-lowering medication.

Need more help? hi@arecon.eu

Faaast app icon

Ready when
you are.

Free on the App Store. No sign-up.

Download on theApp Store

And yes, three a’s. The last few hours of a fast feel about that long.