Comparison

Fasting Clock vs Fasty

Price, ratings, monetisation and update history for both apps, side by side โ€” with what reviewers say about each.

Head to head
About

Fasting Clock

Features
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Start a fasting timer, close the app, and trust the number when you come back. FastTrkr tracks your intermittent fasting window โ€” 16:8, 14:10, 12:12, 18:6, 20:4 or OMAD โ€” shows elapsed time against your target, then counts down the eating window that follows. Most fasting apps want your email, your weight, your meal photos and a coaching plan. FastTrkr is the opposite: a precise fasting clock with an honest log. The timer is anchored to your iPhone's continuous system clock, so elapsed time stays correct through reboots, timezone changes and clock adjustments. And it records the hours that actually ran โ€” end at 15.2 hours and the log says 15.2, never a rounded-up target. WHAT YOU GET โ€ข Open the app 14 hours into a 16:8 and "14:22:07 of 16h" is already on the ring โ€” the clock kept counting while the app was closed โ€ข End the fast and an eating-window countdown takes its place, so you know dinner has to land inside the next 7 hours 40 minutes โ€ข One local reminder fires the minute your window completes โ€” no fast quietly stretching to 19 hours because you forgot it was running โ€ข A day streak, windows-met total and lifetime fast count sit under the ring every time you open the app โ€ข Tapped End by accident at hour 3? Edit the start and end times and the session is corrected, with a note field for how it felt โ€ข A 14-day bar chart shows your recorded fasting hours at a glance PERFECT FOR โ€ข 16:8 beginners who want one number, not a lifestyle program โ€ข OMAD and 20:4 practitioners who need a timer that takes long windows seriously โ€ข Anyone who quit a fasting app because it demanded an account and a weigh-in first โ€ข Shift workers whose windows move โ€” custom hour targets when the standard presets don't fit WHY NOT JUST USE THE CLOCK APP? A plain timer forgets everything when it ends, loses your fast when the phone reboots, and knows nothing about eating windows. FastTrkr survives a reboot mid-fast, logs every session to an editable history, keeps your streak, and tells you when the eating window closes โ€” things a stopwatch will never do. PRIVATE BY DEFAULT No account, no analytics, no ads, no server. Every session is stored on your iPhone and the app works fully offline. Nothing you record ever leaves the device. FastTrkr is a timer, not medical advice. Fasting is not suitable for everyone โ€” read the in-app safety guidance and talk to a clinician if you are unsure. FULL ACCESS FastTrkr Pro unlocks the extended protocols โ€” 18:6, 20:4, OMAD and custom targets up to 23 hours โ€” plus the 14-day hours chart. Choose a weekly or yearly subscription, or a one-time lifetime purchase. Start your first 16:8 tonight โ€” by breakfast the ring will tell you exactly where you stand. Terms of Use: https://leanstudio.asia/terms-of-use Privacy Policy: https://leanstudio.asia/privacy-policy Support: support@leanstudio.asia

About

Fasty

Features
Read full description

Fasty is the simplest way to track intermittent fasting โ€” 16:8, 18:6, 20:4, OMAD, or custom. One tap to start. Live Activities keep your progress on the Lock Screen without opening the app. Pick a plan, tap Start, and let Fasty take care of the rest. Your fasting timer lives where you actually look: the Home Screen widget, the Lock Screen Live Activity, and the Dynamic Island, so you always know how long you have left without opening the app. WHY FASTY - Quiet by design. No streak shaming, no animated pressure, no push spam. - Local-first. Your data stays on your device. No account. No backend. No tracking. - Just enough features. A timer, proven plans, history, widgets, and Live Activities. PLANS INCLUDED - 16:8: the most popular daily window. - 18:6: a tighter eating window for experienced fasters. - 20:4: the Warrior style, one main meal. - 24h: a full-day fast for an occasional reset. WIDGETS & LIVE ACTIVITY Add the Fasty widget to your Home Screen or Lock Screen and your remaining time updates automatically. When you start a fast, a Live Activity appears in the Dynamic Island and on the Lock Screen so progress is one glance away. NOTIFICATIONS Fasty sends a single local notification when your fasting window completes. No marketing pushes, no streak nags. You can turn notifications off any time in iOS Settings. PRIVACY Fasty does not collect data. There is no sign-in. Your fasting history lives only on your device and is shared with the widget through Apple App Groups, never sent to a server. MEDICAL DISCLAIMER Fasty is a habit-tracking timer, not medical software. Fasting is not appropriate for everyone. If you are pregnant, breastfeeding, under 18, have a history of eating disorders, diabetes, any chronic condition, or are taking long-term medication, consult a qualified healthcare provider before starting any fasting regimen. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Screenshots

Fasting Clock4 screens
Fasty3 screens

Verdict

The call

The clearest difference is update cadence: Fasty at every 3 days against Fasting Clock's every 4 months. On price, ads, in-app purchases and device support there is nothing between them.

Scored on Price ยท Rating ยท Positive reviews ยท Number of ratings ยท Update frequency ยท Ads ยท In-app purchases ยท Monetization ยท Best chart rank ยท Devices ยท Requires iOS

CostPrice ยท In-app purchases ยท Ads ยท Monetization

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Fasting Clock ships an update every 4 months, Fasty every 3 days. The most recent releases landed on October 11, 2026 and October 18, 2026 respectively.

Scorecard1 real difference ยท 5 level
Fasting Clock versus Fasty: the parameters behind the verdict, then further details
ParameterFasting ClockFasty
PriceFreeFree
Update frequencyEvery 4 monthsEvery 3 days โ€” better
AdsNoNo
In-app purchasesNoNo
DevicesiPhoneiPhone, iPad โ€” better
Requires iOS17.017.0
Further details โ€” not scored
Size3 MB3 MB
Age rating4+4+
DeveloperLEAN ASIA CO., LTD้•ฟ่ดต ๅ‘จ

In-app purchases

None

Fasting Clock

No in-app purchases

None

Fasty

No in-app purchases

Questions

Is Fasting Clock free?
Fasting Clock is free to download, with no in-app purchases.
Is Fasty free?
Fasty is free to download, with no in-app purchases.
Do Fasting Clock or Fasty have ads?
Neither Fasting Clock nor Fasty shows ads.
Which is updated more often, Fasting Clock or Fasty?
Fasting Clock ships an update every 4 months, and Fasty every 3 days. Most recently, Fasting Clock was updated on October 11, 2026 and Fasty on October 18, 2026.

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