Comparison

FastWindow 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

FastWindow

Features
Read full description

FastWindow does one thing. It shows you how long you've been fasting and when you can eat. Every major fasting app has become a wellness platform — coaching subscriptions, quizzes, recipe feeds, and paywall friction. FastWindow strips all of that away. ONE-TAP FASTING TIMER Open the app. Tap start. Done. No quiz about your goals. No onboarding survey. No account creation. Just a clean fasting timer that works. You see two things: • How long you've been fasting (elapsed time) • When you can eat (remaining time) That's it. That's the app. FASTING PRESETS BUILT IN Choose your fasting window in one tap: • 16:8 (16 hours fasting, 8 hours eating) • 18:6 (18 hours fasting, 6 hours eating) • 20:4 (20 hours fasting, 4 hours eating) • OMAD (One Meal A Day) • Custom durations (Pro feature) No coaching. No meal plans. No calorie tracking. Just fasting. FEATURES THAT MATTER • One-tap fasting timer • Live elapsed and remaining time • Fasting presets (16:8, 18:6, 20:4, OMAD) • 7-day fast history at a glance • Calendar heatmap to see patterns • Backdate your start time if you forget to start the timer • Local notifications when your fast ends • No account required. Ever. • No subscription. Ever. FASTWINDOW PRO — One Time Purchase Upgrade once to unlock: • Unlimited fast history (beyond 7 days) • Custom fasting durations (set any hours:minutes) • Weight log with trend visualization • Apple Health export (weight, fasting data) • Advanced stats (average fast length, streak tracking) Pay once. Ā£4.99. Yours forever. No renewal, no monthly fee, no subscription. WHY FASTWINDOW EXISTS The fasting app category has a problem. Every major app pushes you toward: • Subscription upsells (coaching, premium insights, meal plans) • Onboarding quizzes (goals, weight, activity level, dietary preferences) • Wellness bloat (recipes, articles, community challenges, step tracking) FastWindow rejects all of that. If you need a fasting coach, use Zero. If you want recipes and meal plans, use Fastic. If you want community challenges, use BodyFast. But if you just want to know how long you've been fasting — and that's it — FastWindow is for you. PERFECT FOR • People practicing intermittent fasting (16:8, 18:6, OMAD, etc.) • Users frustrated by fasting app subscriptions • Anyone who wants a timer, not a wellness platform • People who value simplicity over features • Users tired of onboarding quizzes and paywalls WHO FASTWINDOW IS NOT FOR FastWindow does not provide: • Coaching or fasting advice • Meal plans or recipes • Calorie tracking or macros • Community features or challenges • Water intake or step tracking • Body measurements beyond weight If you need those features, consider Zero, Fastic, or BodyFast. FastWindow is intentionally minimal. PRIVACY & SIMPLICITY • No account creation required • No email, no password, no profile • All data stored locally on your device • No cloud sync (intentional — keeps it simple) • No third-party analytics or tracking • Offline-first design NO SUBSCRIPTION MEANS NO SUBSCRIPTION Other fasting apps say "free" but push monthly subscriptions for basic features like custom fasting durations or history beyond 7 days. FastWindow is different: one optional upgrade, one price, lifetime access. No coaching upsells, no premium tiers, no renewal fatigue. Free version: 7-day history, preset durations (16:8, 18:6, 20:4, OMAD), basic timer Pro version: Ā£2.99 once, everything unlocked, forever MEDICAL DISCLAIMER FastWindow is not medical advice. Consult a healthcare professional before beginning any fasting program, especially if you have a medical condition or take medications. SUPPORT & CONTACT Questions? Feedback? Contact us at karl@projectsnaplabs.com FastWindow is independently developed with your focus and simplicity as the top priorities. Download FastWindow today and track your fasts without the bloat, subscriptions, or friction.

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

FastWindow4 screens
Super Fasting Tracker4 screens

Verdict

The call

The clearest difference is iOS requirement: FastWindow at 15.1 against Super Fasting Tracker's 17.0. On price, ads, in-app purchases and device support 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. FastWindow sells 1 one-off in-app purchase and Super Fasting Tracker sells 3 in-app purchases, starting at $7.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Scorecard1 real difference Ā· 4 level
FastWindow versus Super Fasting Tracker: the parameters behind the verdict, then further details
ParameterFastWindowSuper Fasting Tracker
PriceFreeFree
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPad, Apple Watch — better
Requires iOS15.1 — better17.0
Further details — not scored
Size37 MB29 MB
Age rating4+4+
DeveloperPROJECTSNAPLABS LTDPro App Company Limited

In-app purchases

1 purchases

FastWindow

One-time1
  • FastWindow Pro$4.99
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 FastWindow free?
FastWindow is free to download, with in-app purchases available.
Is Super Fasting Tracker free?
Super Fasting Tracker is free to download, with in-app purchases available.
Do FastWindow or Super Fasting Tracker have ads?
Neither FastWindow nor Super Fasting Tracker shows ads.

Other comparisons