Fasting timer for iPhone

Fast without
watching the clock

Your fast on your Lock Screen. An alarm when your window is complete. More room for the rest of your day.

Choose 16:8 or a schedule that suits you. Keep meals and progress in the same app. Alarms require iOS 26 and permission.

Download on the App Store See how it works

The app requires an active subscription. Before you confirm, the App Store shows options, price, duration, and any eligible trial or offer.

Screenshots preview the upcoming design.

  • Private by default
  • No ads, no noise
  • Built for iPhone
Fagia fasting timer showing 13 hours 20 minutes elapsed, an estimated phase, and the Now, Eat and Data tabs.

Fasting
timer

AI meal
analysis

Weight
trend

Fasting
journal

How it works

Your fast,
step by step

Choose a window, track the time and check the next estimated phase from your fasting timer.

  1. Choose your window

    Use a protocol such as 16:8 or create one that fits your routine.

  2. Start and adjust your fast

    Start the timer, correct the start time or finish early when your day changes.

  3. See what comes next

    Check elapsed time, remaining time and the next estimated phase at a glance.

Live Activity for iPhone

Your fast.
Always in view.

Check your fasting time without opening Fagia. Live Activity brings your timer and estimated phase to the Lock Screen.

Fagia Live Activity on the iPhone Lock Screen showing elapsed time with smaller seconds and an estimated fasting phase.

One glance is enough

Keep elapsed time visible while you get on with your day.

Also in Dynamic Island

Follow your fast in Dynamic Island on supported iPhone models.

Time comes first

Prominent hours and minutes, with quieter seconds.

Phases as a guide

Phases are estimated from elapsed time, not measured in your body.

Fagia estimates phases from elapsed time; it does not measure your metabolism, diagnose conditions or replace medical advice.

Fasting alarms

An alarm.
One less thing to check.

Let Fagia alert you when your window is complete. On iOS 26, authorized alarms can sound even in silent mode.

Fagia alarm after completing a 16:8 fast, with options to be reminded in 15 minutes or stop the alarm.

Your window, complete

Get an alert when you reach the time you chose.

Even in silent mode

Enable alarm permission on an iPhone running iOS 26 or later.

A reminder later

Snooze the alarm for 15 minutes when you need a little more time.

Adjust anytime

Adjust your schedule in the app when your plans change.

Alarms require iOS 26 or later and permission. Earlier versions use notifications, subject to your iPhone settings.

AI meal analysis

One photo.
Less manual logging.

Photograph your meal for calorie, macro and ingredient estimates. Review the result before saving it: AI can make mistakes.

Fagia Eat tab with a daily calorie and macro summary, meal logging and the Analyze photo button.

Meal photo

Photograph a plate; Fagia estimates which ingredients it contains.

Calories & macros

Estimated kcal with protein, carbs and fat.

Estimated ingredients

A list of what the AI estimates is on the plate.

Fasting impact

See an estimate of how the meal may fit your fasting window.

Fasting journal

Reflect on
how you feel

Note hunger, energy, sleep and mood to connect each fast with how you felt.

Hunger

Notice the waves, not just the peaks.

Energy

Note the changes you notice during your fast.

Sleep

See how rest connects to your routine.

Mood

Record how the day felt in your own words.

Progress & data

See the trend,
not a single day

Review your fasting history and weight entries. See the routine you are building without judging it by one day.

Fagia Data tab with weekly fasting history, weight records, photos and notes.

Weight trends

A gentle line, not a daily verdict.

Fasting history

Compare the length of your fasts over time.

Keep the context

Add photos and notes to your entries when they help.

Weekly insights

Patterns that a single day can't show.

Body composition

Compare
your photos

If you choose to use this feature, compare photos taken under similar conditions and review an indicative estimate.

Weekly photo

Add a photo whenever you want a visual reference for your progress.

Side by side

See today next to your very first photo, anytime.

Estimated body fat

An approximation based on the photo and your data; results can vary by image.

Limited processing

When you request analysis, the encrypted photo is sent to our proxy and AI provider; our servers do not retain it after processing.

Body composition is an indicative estimate that can vary with lighting, posture and framing; it is not a medical or diagnostic measurement.

Goal projection

Explore
a projection

Explore an indicative date calculated from your weight and calorie entries. It changes when your data changes.

Estimated goal date

A calculated date that changes with your entries.

Daily deficit

Review the value calculated from the data you have logged.

Weight forecast

One possible trajectory within a range, not an assured result.

Scenario insights

Compare how different logged data may move the date.

The projection is indicative; it does not guarantee weight loss or replace medical advice.

In your language

Built for your routine,
wherever you are

Available in English, Spanish, Brazilian Portuguese, French, Italian and German. Choose your language and explore Fagia.

EN English ES Español PT Português FR Français IT Italiano DE Deutsch

Your fasting window,
under control

Fagia is an intermittent fasting app for iPhone. Its fasting timer shows elapsed and remaining time for both a 16:8 protocol and a custom window.

During a fast, Fagia shows estimated metabolic phases based on elapsed time; they are educational references, not body measurements. AI meal analysis turns a photo you choose into estimates for ingredients, calories and macros.

The weight trend puts each entry in context, while the fasting journal brings together notes on hunger, energy, sleep and mood. Review your routine without relying on one isolated number.

Questions

Good to know

What is Fagia?

Fagia is an intermittent fasting app for iPhone. It brings together a fasting timer, estimated phases, AI meal analysis, calories, a weight trend and a fasting journal.

Can I track 16:8 fasting?

Yes. 16:8 is built in, alongside other common windows, and you can create custom protocols that fit your own rhythm and adjust them whenever you need to.

What are metabolic phases?

They are educational references calculated from elapsed time. Fagia does not measure your metabolism or confirm that your body is in a specific phase; timing varies between people and days.

Can Fagia analyze meals from a photo?

Yes. When you choose a photo, AI meal analysis estimates calories, macros and ingredients and suggests how the meal may fit your window. Results can contain errors.

Does Fagia track calories and macros?

It does. Fagia keeps a readable daily calorie overview and a balance of protein, carbohydrates and fat — designed to inform you, not to make you anxious about every number.

Can I track weight progress?

Yes. Log your weight and Fagia shows a trend and weekly insights. The optional projection updates with your entries and does not guarantee an outcome.

Is Fagia medical advice?

No. Fagia provides educational and wellness guidance based on your logged data. It is not medical advice. If you have a health condition, are pregnant, or take medication, please consult a qualified professional before fasting.

Does Fagia require a subscription?

Fagia requires an active subscription to access the app. The App Store shows the available options, price, duration, and any trial or offer for which you are eligible before you confirm a purchase.

What happens to my photos and AI analysis?

Your data stays on your device by default. Meal or body-composition photos you choose to analyze, accompanying data, and projection figures are sent encrypted to the proxy and AI provider. Fagia uses a pseudonymous UUID for subscriptions and abuse prevention. The proxy does not persist the content after responding; see the Privacy Policy for provider retention.

Can I see my fast with my iPhone locked?

Yes. Live Activity shows the timer and estimated phase on your Lock Screen, and in Dynamic Island on supported models. Live Activities must be enabled.

Does the alarm sound in silent mode?

On iOS 26 or later, Fagia alarms can sound in silent mode if you grant alarm permission. Earlier versions use notifications whose sound depends on your iPhone settings.

Fagia app icon Start today

Your next fast,
without chasing the clock

Start with a window that fits your day. Fagia brings your timer, Live Activity, meals and progress together on iPhone.

Download on the App Store