FastFlow vs Fasting Window
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
FastFlow
This app helps users manage intermittent fasting schedules with a visual timer and customizable patterns. It also allows for weight tracking, meal logging with photos, and smart notifications to build healthy habits.
- Circular fasting timer
- Flexible fasting patterns
- Weight progress graph
- Meal logging with photos
- Smart notifications
- Cloud data sync
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【Who Is This For?】 • Starting 16:8 intermittent fasting • Want easy fasting time management • Track and visualize weight changes • Achieve autophagy benefits for healthy weight loss 【Key Features】 ■ Beautiful Circular Timer Intuitive display showing remaining fasting or eating time. Elegant design with clear progress visualization. ■ Flexible Fasting Patterns • 16:8 (16-hour fast / 8-hour eating window) • 18:6 (18-hour fast / 6-hour eating window) • 14:10 (14-hour fast / 10-hour eating window) • Custom schedules ■ Weight Progress Graph Record daily weight and visualize changes with line graphs. See your fasting results clearly. ■ Meal Log Document meals with photos. Review what you've eaten anytime. ■ Smart Notifications Get push notifications for fasting start and end times. Build lasting habits effortlessly. ■ Cloud Sync Securely backup your data to the cloud. Transfer seamlessly when switching devices. 【Benefits of Intermittent Fasting】 • Activate autophagy for cellular renewal • Improve insulin sensitivity • Enhance fat burning • Boost focus and mental clarity 【Why FastFlow?】 • 100% free with all features unlocked • Simple, intuitive interface • Privacy-focused design • Clean, distraction-free experience Download now and start your healthy fasting journey!
Fasting Window
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A simple, beautiful intermittent fasting timer that just works. No account, no clutter — start your fast in one tap. TRACK YOUR FAST • 16:8, 18:6, 20:4, OMAD, and custom protocols • Beautiful circular progress ring with metabolic stage badges • Push notification when your fast is complete BUILD YOUR STREAK • Full fast history with streak tracking • Weight tracking with trend charts • See your progress at a glance EATING WINDOW GUIDE • What to eat when breaking your fast • Foods to avoid right after fasting • Re-feeding timing tips Designed to be calm and distraction-free. Your data stays on your device.
Screenshots
Verdict
The clearest difference is ads: Fasting Window at none against FastFlow's shown. Fasting Window also leads on iOS requirement (13.0 vs 15.1). On price, update cadence, 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. Neither carries in-app purchases, so what you see is what you pay.
Both ship on a similar rhythm, roughly every 4 months. The most recent releases landed on October 3, 2026 and October 13, 2026 respectively.
| Parameter | FastFlow | Fasting Window |
|---|---|---|
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| Update frequency | Every 4 months | Every 4 months |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Monetization | Ad-supported | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.1 | 13.0 — better |
| Further details — not scored | ||
| Size | 34 MB | 20 MB |
| Age rating | 12+ | 4+ |
| Developer | Caprio Lab | HeungYeol Kim |
In-app purchases
FastFlow
No in-app purchases
Fasting Window
No in-app purchases









