Intermittent Fasting vs FastingWindow
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Intermittent Fasting
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Window is the intermittent fasting timer built for people who take their health seriously. A clean circular ring tracks every hour of your fast - no clutter, just calm focus. START FASTING IN SECONDS Tap once to start. Your fast timer begins, your metabolic state updates in real time, and your streak grows with every completed fast. 16:8, 18:6, 20:4, OMAD - Window supports every protocol. KNOW YOUR METABOLIC STATE Watch your body shift through distinct phases: Fed, Ketosis, Fat Burn, and Autophagy. See exactly where you are and what is happening inside your body at each stage. TRACK YOUR STREAK A daily streak keeps you consistent. See your current streak, longest streak, total fasts, and total fasting hours - all updated automatically. YOUR EATING WINDOW, CLEARLY MARKED When your fast ends, Window opens your eating window. An amber indicator shows exactly when to eat and when to stop. Start your next fast when the window closes. LOG HOW YOU FEEL Record hunger, energy, and mental clarity during each fast. Over time, see your personal patterns in the Pattern Analysis section. WINDOW PRO - GO DEEPER - Pattern Analysis: understand your hunger, energy, and clarity trends across all your fasts - Weight Tracking: log your weight after each eating window, see a 7-day moving average - AI Fasting Coach: ask anything about fasting - protocols, science, troubleshooting - Full history: all your fasts, no 30-day limit WHAT MAKES WINDOW DIFFERENT Clean. No ads. No gamification. No noise. Just your fast, your ring, and your streak. The design is built around the timer - because the timer is the product. FASTING SCIENCE BUILT IN - Metabolic state timeline: Fed, Ketosis, Fat Burn, Autophagy - What breaks a fast: reference guide always one tap away - Protocol guide: 12:12 through ADF explained - Electrolyte and hydration reference - Beginner progression guide Terms of Use (EULA): https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
FastingWindow
This app offers a straightforward method for tracking intermittent fasting. It visualizes your fasting progress with a live ring and details the five metabolic stages your body goes through. Understand your body's response during fasting with clear explanations.
- Simple fasting tracking
- Live progress ring
- Five metabolic stage explanations
- No account required
- No subscription needed
- Real-time progress monitoring
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FastingWindow is the cleanest, simplest way to track intermittent fasting — no account, no subscription, no noise. Pick a schedule (16:8 or 12:12), tap Start Fast, and watch your progress in real time. A live ring shows exactly where you are in your fast, and as the hours pass you'll move through five metabolic stages — from initial digestion all the way to deep ketosis. Each stage is explained so you actually understand what your body is doing, not just how long you've been waiting.
Screenshots
Verdict
The clearest difference is update cadence: FastingWindow at every 2 days against Intermittent Fasting's fortnightly. Intermittent Fasting's advantage is iOS requirement (18 vs 26.4). On price, ads, in-app purchases and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Intermittent Fasting sells 3 in-app purchases, starting at $4.99 per month and FastingWindow sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Intermittent Fasting ships an update fortnightly, FastingWindow every 2 days. The most recent releases landed on September 10, 2026 and June 25, 2026 respectively.
| Parameter | Intermittent Fasting | FastingWindow |
|---|---|---|
| Price | Free | Free |
| Rating | — | 5.0 (2 ratings) — better |
| Number of ratings | — | 2 — better |
| Update frequency | Fortnightly | Every 2 days — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | — | Free with in-app purchases |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18 — better | 26.4 |
| Further details — not scored | ||
| Size | 8 MB | 5 MB |
| Age rating | 12+ | 4+ |
| Developer | Karol Jaworski | Moon Labs LLC |
In-app purchases
Intermittent Fasting
- Window Pro Monthly$4.991 Month
- Window Pro Intro Year1 Year trial$39.991 Year
- Window Pro Yearly$39.991 Year
FastingWindow
- Unlock Forever$2.99





