Comparison

FastWindow vs Fasting Timer

Price, ratings, monetisation and update history for both apps, side by side β€” 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 β€” 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: β€’ How long you've been fasting (elapsed time) β€’ When you can eat (remaining time) That's it. That's the app. FASTING PRESETS BUILT IN Choose your fasting window in one tap: β€’ 16:8 (16 hours fasting, 8 hours eating) β€’ 18:6 (18 hours fasting, 6 hours eating) β€’ 20:4 (20 hours fasting, 4 hours eating) β€’ OMAD (One Meal A Day) β€’ Custom durations (Pro feature) No coaching. No meal plans. No calorie tracking. Just fasting. FEATURES THAT MATTER β€’ One-tap fasting timer β€’ Live elapsed and remaining time β€’ Fasting presets (16:8, 18:6, 20:4, OMAD) β€’ 7-day fast history at a glance β€’ Calendar heatmap to see patterns β€’ Backdate your start time if you forget to start the timer β€’ Local notifications when your fast ends β€’ No account required. Ever. β€’ No subscription. Ever. FASTWINDOW PRO β€” One Time Purchase Upgrade once to unlock: β€’ Unlimited fast history (beyond 7 days) β€’ Custom fasting durations (set any hours:minutes) β€’ Weight log with trend visualization β€’ Apple Health export (weight, fasting data) β€’ Advanced stats (average fast length, streak tracking) Pay once. Β£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: β€’ Subscription upsells (coaching, premium insights, meal plans) β€’ Onboarding quizzes (goals, weight, activity level, dietary preferences) β€’ 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 β€” and that's it β€” FastWindow is for you. PERFECT FOR β€’ People practicing intermittent fasting (16:8, 18:6, OMAD, etc.) β€’ Users frustrated by fasting app subscriptions β€’ Anyone who wants a timer, not a wellness platform β€’ People who value simplicity over features β€’ Users tired of onboarding quizzes and paywalls WHO FASTWINDOW IS NOT FOR FastWindow does not provide: β€’ Coaching or fasting advice β€’ Meal plans or recipes β€’ Calorie tracking or macros β€’ Community features or challenges β€’ Water intake or step tracking β€’ Body measurements beyond weight If you need those features, consider Zero, Fastic, or BodyFast. FastWindow is intentionally minimal. PRIVACY & SIMPLICITY β€’ No account creation required β€’ No email, no password, no profile β€’ All data stored locally on your device β€’ No cloud sync (intentional β€” keeps it simple) β€’ No third-party analytics or tracking β€’ 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: Β£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

Fasting Timer

Features
Read full description

See how long you've been fasting right on your Lock Screen β€” without opening the app. Fasting Timer is an intermittent fasting clock that shows your day as a 24-hour dial. Instead of a progress bar, your fast is drawn as an arc on a real clock face β€” "from 9:30 last night until 1:30 this afternoon" β€” so you see when you can eat, not just how long you've held on. ● Lock Screen widgets, Live Activity and Dynamic Island β€” always accurate, even with the app closed ● No 23-hour cap β€” the arc keeps growing past your goal ● Zero ads, no account, no server β€” fully local, works offline ● Your history stays β€” a 30-day dial calendar plus automatic iCloud backup ● Reminders for your first meal and your next fast Free forever - Timer with 16:8, 18:6, 20:4 and OMAD presets - Lock Screen widgets (circular, rectangular, inline) and Live Activity - Overtime counting, 30-day history, iCloud backup Premium (subscription) - Custom fast length (1–72 hours) and extended 36/72-hour fasts - Full history beyond 30 days - CSV export About subscriptions: Premium is a monthly or yearly subscription. The yearly plan starts with a 7-day free trial. Subscriptions renew automatically unless canceled at least 24 hours before the end of the period, and payment is charged to your Apple ID account. Manage or cancel in your App Store account settings. This app provides general reference information and is not medical advice. Consult a professional before fasting if you have a health condition. Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/ Privacy Policy: https://aside.ai.kr/en/apps/fasting/privacy

Screenshots

FastWindow4 screens
Fasting Timer4 screens

Verdict

The call

FastWindow and Fasting Timer are too close to call on the numbers: across 5 compared parameters β€” price, ads, in-app purchases and device support among them β€” neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

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

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

Both are free to download. FastWindow sells 1 one-off in-app purchase and Fasting Timer sells 2 in-app purchases, starting at $0.99 per month. Whichever you choose, the download price is not the number that matters.

ScorecardNo meaningful differences
FastWindow versus Fasting Timer: the parameters behind the verdict, then further details
ParameterFastWindowFasting Timer
PriceFreeFree
AdsNoNo
In-app purchasesYesYes
DevicesiPhone, iPodiPhone, iPod
Requires iOS15.114.0 β€” better
Further details β€” not scored
Size37 MB19 MB
Age rating4+4+
DeveloperPROJECTSNAPLABS LTDYunseong Jung

In-app purchases

1 purchases

FastWindow

One-time1
  • FastWindow Pro$4.99
2 purchases

Fasting Timer

Subscriptions2
  • Premium Monthly$0.991 Month
  • Premium Yearly$6.991 Year

Questions

Is FastWindow free?
FastWindow is free to download, with in-app purchases available.
Is Fasting Timer free?
Fasting Timer is free to download, with in-app purchases available.
Do FastWindow or Fasting Timer have ads?
Neither FastWindow nor Fasting Timer shows ads.

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