Fast vs FastWindow
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Fast
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Start intermittent fasting today with Fast-E - a beautifully designed fasting timer that puts your privacy first. Every feature is completely free. No subscriptions, no ads, no account required. SIMPLE FASTING TIMER Choose from popular preset schedules - 16:8, 18:6, 20:4, or OMAD - or create your own custom fasting window. Start your fast with a single tap. A beautiful animated ring shows your progress in real time, counting down to your eating window. CUSTOM SCHEDULES Create personalized fasting schedules with any fasting-to-eating ratio. Whether you prefer 14:10, 12:12, or any other split, Fast-E adapts to your routine. TRACK YOUR PROGRESS View detailed statistics including total fasts completed, average duration, completion rate, and weekly activity. Interactive charts help you spot trends and stay motivated. BUILD YOUR STREAK Keep your momentum going with streak tracking. See how many consecutive days you've completed your fasting goal and push yourself to keep the chain going. FULL FASTING HISTORY Every fast is recorded and stored on your device. Browse your complete history, see which sessions you completed, and track your journey over time. HOME SCREEN WIDGETS Add Fast-E widgets to your home screen to see your fasting progress at a glance without opening the app. SMART NOTIFICATIONS Get reminders when your fasting window starts, when it's time to eat, and when you're halfway through. Customize notification timing to match your routine. YOUR PRIVACY MATTERS All your data stays on your device. No account creation, no cloud sync, no data collection, no analytics tracking. Fast-E works entirely offline. 100% FREE Every feature in Fast-E is available at no cost. No premium tier, no feature gates, no in-app purchases. Just download and start fasting.
FastWindow
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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 ā 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 ā 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 ā and that's it ā 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 ā 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.
Screenshots
Verdict
The clearest difference is in-app purchases: Fast at none against FastWindow's 1. FastWindow's advantage is iOS requirement (15.1 vs 17.0). On price, ads 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
Both are free to download. FastWindow sells 1 one-off in-app purchase. Fast asks for nothing beyond the download.
| Parameter | Fast | FastWindow |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 2 days | ā |
| Ads | No | No |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPad | iPhone, iPod |
| Requires iOS | 17.0 | 15.1 ā better |
| Further details ā not scored | ||
| Size | 6 MB | 37 MB |
| Age rating | 4+ | 4+ |
| Developer | Invotek AS | PROJECTSNAPLABS LTD |
In-app purchases
Fast
No in-app purchases
FastWindow
- FastWindow Pro$4.99









