Fastyn vs Intermit
Price, ratings, monetisation and update history for both apps, side by side β with what reviewers say about each.
Fastyn
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Fastyn is the fastest and most elegant way to track your fasts. Forget complicated menus and manual setup: just choose how many hours you want to fast, tap βStartβ, and let the app handle the rest. Designed with a modern glassmorphism style, smooth animations, and thoughtful personalization, Fastyn turns intermittent fasting into a clear, visual, and motivating experience you can rely on every day. What makes Fastyn different is its smart logic. The app doesnβt just start a timer, it helps you start at the right moment. Smart Start suggestions - Based on the current time and your habits, Fastyn suggests the best moment to begin your fast, such as βTonightβ or βTomorrow morningβ. - You also get clear, persuasive reasons like βIdeal for relaxing before sleepβ, so itβs easier to stay consistent without overthinking. Live physiological phases - During your fast, Fastyn shows your estimated fasting stages in real time, such as fat burning, ketosis, or autophagy, directly on the home screen and widgets. - You always know where you are in your fasting journey at a glance. What you can do with Fastyn - Free duration: set any number of hours (for example, 8 h, 12 h, 20 hβ¦) and start your fast instantly. - Live timer: track elapsed time, estimated calories burned, and fasting progress with an intuitive visual chart. - Estimated calories: see an estimate of how many calories you may have burned during your fast. - Smart cards: keep your key metrics (fasting phase, BMI, streaks, goals, and more) always visible on the main screen. - Weight log: record your measurements, explore interactive charts, and project your progress toward your goals. - Fasting calendar: review your daily and multi-day fasting history to understand your consistency over time. - Smart notifications: receive end-of-fast alerts, hydration reminders, and motivational tips to stay on track. - Customizable widgets: monitor your progress from your Home Screen without opening the app. Set your hours, tap βStartβ, and experience fasting in a simple, intelligent, and visual way. Privacy Policy: https://sites.google.com/view/fastikk-privacidad/home Terms of Service: https://sites.google.com/view/fastikk-terminos
Intermit
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The intermittent fasting tracker you buy once and keep forever. No subscriptions, no ads, no account required. Just start your fast and let Intermit guide you through every metabolic stage. SMART FASTING TIMER Start, pause, and resume your fasts with a beautiful progress ring that shows your current metabolic stage β from Fed all the way to Autophagy. Choose from 13 popular protocols (12:12, 14:10, 16:8, 18:6, 20:4, OMAD, and more) or build your own custom schedule. CYCLE-SYNCED FASTING Sync your fasting to your menstrual cycle. Intermit suggests gentler protocols during your luteal and menstrual phases, and more ambitious ones when your body is primed for fat burning and ketosis. Track your period, view your current phase, and get personalized protocol recommendations tailored to your cycle. METABOLIC STAGES See exactly where you are in your fast β from the Fed state through Fat Burning, Ketosis, Deep Ketosis, and Autophagy β with clear explanations of what is happening in your body at each stage. HISTORY & STATISTICS Review every completed fast, track your streaks, averages, and protocol breakdown. Export your data as CSV anytime: your data is yours, always. PRIVACY FIRST All data stays on your device. No account required, no cloud sync, no tracking, no analytics. Your health data never leaves your phone. ONE-TIME PURCHASE Pay once, use forever. No subscriptions, no hidden fees, no ads. Intermit is yours for life. --- Privacy Policy: https://getintermit.com/privacy-policy Terms of Service: https://getintermit.com/terms-of-service
Screenshots
Verdict
The clearest difference is update cadence: Intermit at monthly against Fastyn's every 3 months. Intermit also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.6). On price, ads and in-app purchases there is nothing between them.
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
Both are free to download. Fastyn sells 3 in-app purchases, starting at $1.99 per 7 days and Intermit sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
Fastyn ships an update every 3 months, Intermit monthly. The most recent releases landed on August 27, 2026 and September 13, 2026 respectively.
| Parameter | Fastyn | Intermit |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 months | Monthly β better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Devices | iPhone | iPhone, iPad, iPod β better |
| Requires iOS | 17.6 | 15.0 β better |
| Further details β not scored | ||
| Size | 35 MB | 33 MB |
| Age rating | 17+ | 4+ |
| Developer | MANUEL MATAS GALEOTE | Sara El Harkaoui |
In-app purchases
Fastyn
- Fastyn Plus Weekly$1.997 Days
- Fastyn Plus Monthly$3.991 Month
- Fastyn Plus Annual7 Days trial$17.991 Year
Intermit
- Lifetime Access$4.99









