Fastual vs FastWindow
Price, ratings, monetisation and update history for both apps, side by side ā with what reviewers say about each.
Fastual
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Fastual - Your Fasting Ritual, Visualized See what's happening inside your body as you fast. Fastual tracks your metabolic phases in real time - from anabolic digestion through ketosis and autophagy - with a calm, organic interface designed for daily use. REAL-TIME METABOLIC PHASES Watch your body progress through 7 fasting stages: Anabolic ā Catabolic ā Fat Burning ā Ketosis ā Autophagy ā Deep Repair ā Extended. Each phase comes with a clear explanation of what's happening biologically, so you understand your fast - not just time it. ONE-TAP FASTING TIMER Start fasting instantly. Choose from popular protocols like 16:8, 18:6, 20:4 (Warrior), or OMAD (23:1). The expanding ring visualizes your progress without anxiety - no ticking clock, just calm momentum. STREAK & HISTORY TRACKING Build consistency with streak tracking. Review your complete fasting history, see your average fast duration, and watch your streaks grow over time. Every completed fast is logged automatically. WATER TRACKER Stay hydrated during your fast with a quick-add water logger. Customize your glass size, set reminders, and keep your hydration on track - all without leaving the timer screen. PRIVACY BY DESIGN Your biological data stays on your device. No account creation. No cloud sync. No tracking. Fastual works entirely offline - because your fasting journey is yours alone. DARK MODE FIRST The "Bioluminescent" interface is designed for late-night fasting checks and early-morning starts. Reduced eye strain, premium aesthetics, and a design that feels like a ritual - not a fitness app. FASTUAL IS FOR YOU IF: ⢠You want to understand your metabolic phases, not just count hours ⢠You value clean, calm design over feature-heavy fitness apps ⢠You prefer privacy and offline functionality over social features ⢠You're building a sustainable fasting habit through streaks and consistency Available in English and Albanian. MEDICAL DISCLAIMER Fastual is a wellness tracking utility designed for informational and educational purposes only. It is not a medical device and does not provide medical advice, diagnosis, or treatment. The metabolic phases described are general educational summaries of biological processes and should not be interpreted as personalized medical guidance. Intermittent fasting is not suitable for everyone, including pregnant or nursing women, individuals with a history of eating disorders, or those with certain medical conditions. Always consult a physician or healthcare professional before starting any fasting protocol.
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: Fastual at none against FastWindow's 1. FastWindow's advantage is ads (none vs shown). On price, device support 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
Both are free to download. FastWindow sells 1 one-off in-app purchase. Fastual asks for nothing beyond the download.
| Parameter | Fastual | FastWindow |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 6 weeks | ā |
| Ads | Yes | No ā better |
| In-app purchases | No ā better | Yes |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.1 | 15.1 |
| Further details ā not scored | ||
| Size | 52 MB | 37 MB |
| Age rating | 12+ | 4+ |
| Developer | Redjon Prengzi | PROJECTSNAPLABS LTD |
In-app purchases
Fastual
No in-app purchases
FastWindow
- FastWindow Pro$4.99









