Comparison

Fasting Clock vs Super Fasting Tracker

Price, ratings, monetisation and update history for both apps, side by side — 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 — 16:8, 14:10, 12:12, 18:6, 20:4 or OMAD — 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 — end at 15.2 hours and the log says 15.2, never a rounded-up target. WHAT YOU GET • Open the app 14 hours into a 16:8 and "14:22:07 of 16h" is already on the ring — the clock kept counting while the app was closed • 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 • One local reminder fires the minute your window completes — no fast quietly stretching to 19 hours because you forgot it was running • A day streak, windows-met total and lifetime fast count sit under the ring every time you open the app • 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 • A 14-day bar chart shows your recorded fasting hours at a glance PERFECT FOR • 16:8 beginners who want one number, not a lifestyle program • OMAD and 20:4 practitioners who need a timer that takes long windows seriously • Anyone who quit a fasting app because it demanded an account and a weigh-in first • Shift workers whose windows move — 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 — 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 — read the in-app safety guidance and talk to a clinician if you are unsure. FULL ACCESS FastTrkr Pro unlocks the extended protocols — 18:6, 20:4, OMAD and custom targets up to 23 hours — plus the 14-day hours chart. Choose a weekly or yearly subscription, or a one-time lifetime purchase. Start your first 16:8 tonight — 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

Super Fasting Tracker

Features
Read full description

Super Fasting Tracker is the clean, lightweight way to do intermittent fasting. Open the app, tap once, and your fast is running — no account, no ads, no clutter. Your fast stays with you everywhere: on the Lock Screen with Live Activity and the Dynamic Island, on the Home Screen with interactive widgets, and on your wrist with the Apple Watch app. Everything syncs privately through iCloud. FASTING TIMER • One-tap start and end — unlimited fasts, never locked behind a paywall • Popular plans: 13:11, 14:10, 16:8, 18:6, 20:4, and OMAD • Custom fasting goals from 4 to 48 hours (Pro) • Forgot to log? Edit your start time anytime • A journey ring that shows your progress through every stage FASTING ZONES • Follow your body in real time: Anabolic, Catabolic, Fat Burning, Ketosis, and Deep Ketosis • Clear, simple explanations of what happens in each zone • Optional notification as you enter each new zone ALWAYS AT A GLANCE • Live Activity and Dynamic Island: your timer right on the Lock Screen • Interactive Home Screen and Lock Screen widgets — start or end a fast without opening the app • Control Center toggle on iOS 18 • Siri and App Shortcuts: start a fast, end a fast, log water APPLE WATCH • Start, end, and track your fast from your wrist • Watch face complications with live progress • Streak and 7-day stats at a glance TRACK YOUR PROGRESS • History with a calendar heatmap and weekly charts • Streaks plus 19 achievement badges to earn • Streak freezes protect your streak on rest days • Weekly recap cards you can share • Weight tracking with charts, synced with Apple Health • Water tracking: one-tap logging, widget, daily goal, Apple Health sync INSIGHTS • See how your sleep and resting heart rate compare on fasting days, using your Apple Health data • Glucose overlay: if you wear a CGM that writes to Apple Health, see your glucose curve on your fasting timeline • Mood and notes on completed fasts • Complete history beyond 30 days, plus CSV export PRIVATE BY DESIGN • No account, no sign-up — ever • No ads, and your health data is never sold or used for advertising • Your fasting data stays on your device and in your personal iCloud Free forever: unlimited fasts, every standard plan, zones, Live Activity, widgets, Apple Watch, water and weight tracking, streaks and badges. Pro adds custom plans, health insights, mood and notes, full history, and CSV export. Super Fasting Tracker supports healthy habits; it is not a medical device and does not provide medical advice. Fasting zones are estimates and vary from person to person. Talk to your doctor before fasting if you are pregnant or breastfeeding, have diabetes, are under 18, or have a history of eating disorders. Terms of Use: https://techsmart.bio/fastingtracker/terms-of-use.html Privacy Policy: https://techsmart.bio/fastingtracker/privacy-policy.html Questions or ideas? We read everything: support@techsmart.bio

Screenshots

Fasting Clock4 screens
Super Fasting Tracker4 screens

Verdict

The call

The clearest difference is in-app purchases: Fasting Clock at none against Super Fasting Tracker's 3. Super Fasting Tracker's advantage is device support (3 vs 1). On price, ads and iOS requirement there is nothing between them.

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

CostPrice Ā· In-app purchases Ā· Ads Ā· Monetization

Both are free to download. Super Fasting Tracker sells 3 in-app purchases, starting at $7.99 per 7 days. Fasting Clock asks for nothing beyond the download.

Scorecard2 real differences Ā· 4 level
Fasting Clock versus Super Fasting Tracker: the parameters behind the verdict, then further details
ParameterFasting ClockSuper Fasting Tracker
PriceFreeFree
Update frequencyEvery 4 months—
AdsNoNo
In-app purchasesNo — betterYes
DevicesiPhoneiPhone, iPad, Apple Watch — better
Requires iOS17.017.0
Further details — not scored
Size3 MB29 MB
Age rating4+4+
DeveloperLEAN ASIA CO., LTDPro App Company Limited

In-app purchases

None

Fasting Clock

No in-app purchases

3 purchases

Super Fasting Tracker

Subscriptions2
  • Weekly Pro3 Days trial$7.997 Days
  • Yearly Pro$39.991 Year
One-time1
  • Lifetime$79.99

Questions

Is Fasting Clock free?
Fasting Clock is free to download, with no in-app purchases.
Is Super Fasting Tracker free?
Super Fasting Tracker is free to download, with in-app purchases available.
Do Fasting Clock or Super Fasting Tracker have ads?
Neither Fasting Clock nor Super Fasting Tracker shows ads.

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