Intermittent Fasting Tracker vs FastSloth
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Intermittent Fasting Tracker
This app offers a straightforward and private way to track intermittent fasting. It supports iPhone and Apple Watch, providing essential features like widgets, notifications, and progress charts without any advertisements. Ideal for both beginners and experienced fasters, it focuses on a simple user interface to support health and wellness goals.
- Interactive Widgets
- Notifications
- Streaks & Badges
- Charts & Trends
- Fasting Zones
- iCloud Sync
- Dark Mode
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Track fasting periods with Fasty. No account or sign-up required. Start and stop a fasting timer, set a goal, and review your recorded fasts. Edit entries to correct start and end times and keep a record of your fasting history. Features - Fasting timer: see elapsed time and the time remaining until your chosen goal. - Widgets and Live Activities: check your timer from your Home Screen, Lock Screen, and Dynamic Island on supported devices. - Apple Watch: start and finish fasts, change your goal, and check your current fasting status from your wrist, included for free. - Fasting history: add, edit, and review your recorded fasts. - Charts and trends: explore fasting durations, totals, and averages over time. - Notifications: choose reminders and alerts for your timer and eating window. - Siri and Shortcuts: start and finish fasts and check your current fasting status. - CSV import and export: import existing records or export your data for use outside the app. - Dark Mode: use a light or dark appearance to suit your preference. - Streaks and badges: view summaries and milestones based on your recorded fasts. Additional paid features are available through one-time purchases and auto-renewable subscriptions. Available options, included features, and prices are shown in the app before purchase. Subscriptions renew automatically unless canceled. You can manage or cancel them in your App Store account settings. Health information Fasty is a utility for people who want to track their fasting. It does not recommend fasting or a specific fasting plan and does not provide medical advice. Consult a doctor, registered dietitian, or another qualified healthcare professional about whether and how to fast. Privacy Policy: https://fastyfasting.com/#privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
FastSloth
This app helps you track intermittent fasting with customizable schedules and real-time indicators of your body's stages. It also includes hydration logging, weight tracking with visual progress charts, and smart notifications to keep you on track. All your data stays private on your device.
- Customizable fasting schedules
- Real-time ketosis and autophagy indicators
- Hydration logging and reminders
- Weight tracking with progress charts
- Streak tracking and milestone badges
- Home screen widgets
- Private, no account required
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No account. No subscription. No data leaves your phone. FastSloth is a private intermittent fasting tracker with fasting insights, **calorie tracking, a personal recipe book**, hydration and weight tracking, Home Screen widgets, and **custom themes with a Theme Builder**. Start fasting in one tap. ## NEW: CALORIE TRACKER & RECIPE BOOK Track your daily calories alongside your fasting progress. Log meals and foods throughout the day, see your calorie totals at a glance, and keep everything together in one simple place. Save your favorite meals in your personal Recipe Book so you can quickly reuse recipes and keep track of what you eat. ## THEMES & THEME BUILDER Choose a built-in theme or create your own. Customize colors and appearance with the Theme Builder and make FastSloth feel like yours. ## FASTING MADE SIMPLE Start with one tap. Choose 16:8, 14:10, 18:6, 20:4, OMAD, or create a custom fasting schedule. See estimated fasting stages as you progress, including fat burning, ketosis, and autophagy. ## CALORIE TRACKING Log your meals and track your daily calorie intake. See how your nutrition fits alongside your fasting schedule, hydration, and weight progress. ## RECIPE BOOK Save and organize your favorite recipes directly in FastSloth. Keep the meals you make most often close at hand and quickly reuse them when tracking what you eat. ## HYDRATION Log water in seconds, track daily progress, and set hydration reminders. See your progress from the Home Screen with the hydration widget. ## WEIGHT & INSIGHTS Track your weight over time with simple charts that make trends easy to see. ## SMART NOTIFICATIONS * Fast start and end alerts * Fasting stage notifications * Water reminders ## STREAKS & MILESTONES Track completed fasts, build streaks, and unlock milestone badges. ## HOME SCREEN WIDGETS See your current fast, hydration progress, and streak without opening the app. ## PRIVATE BY DESIGN No account. No subscription. Your fasting history, calorie logs, recipes, weight, hydration logs, and settings stay on your device. ## FASTING PROTOCOLS * **16:8** * **14:10** * **18:6** * **20:4** * **23:1 / OMAD** * **Custom schedules** Private. Personal. Lightweight. **Download FastSloth and start fasting your way.**
Screenshots
Verdict
The clearest difference is ratings volume: Intermittent Fasting Tracker at 52K against FastSloth's 5. Intermittent Fasting Tracker also leads on iOS requirement (17.0 vs 26.0). On price, rating, update cadence and ads 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 Tracker sells 17 in-app purchases, starting at $0.99 per month and FastSloth sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.
On the App Store both sit at effectively the same score — 4.9 for Intermittent Fasting Tracker against 5.0 for FastSloth. That said, the two scores are not equally well evidenced: Intermittent Fasting Tracker has 52K ratings behind it against 5, so its average is the more settled of the two.
Intermittent Fasting Tracker ships an update every 2 weeks, FastSloth weekly. The most recent releases landed on October 30, 2026 and October 28, 2026 respectively.
| Parameter | Intermittent Fasting Tracker | FastSloth |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (52K ratings) | 5.0 (5 ratings) — better |
| Positive reviews | 96.9% of reviews | — |
| Number of ratings | 52K — better | 5 |
| Update frequency | Every 2 weeks | Weekly — better |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 94 MB | 10 MB |
| Age rating | 12+ | 12+ |
| Developer | Kai Oelfke | Darren Paul |
Customer experience
Intermittent Fasting Tracker
FastSloth
Bugs and requests
Intermittent Fasting Tracker
Reported bugs
2 issues- Overlapping fasting/eating windows reported
- Inconsistencies in fasting time calculations
Requested features
4 requests- Ability to schedule and set reminders for fasts
- Option to manually log ketosis levels
- Export or share fasting data
- More detailed fasting stage information
FastSloth
Not enough reviews yet to summarise bugs or requests.
In-app purchases
Intermittent Fasting Tracker
- Fasty Monthly Donation$0.991 Month
- Fasty Basic Monthly$0.991 Month
- Fasty Monthly Donation$1.991 Month
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- Fasty Basic Monthly$1.991 Month
- Fasty Monthly Donation$2.991 Month
- Fasty Basic Yearly$4.991 Year
- Fasty Basic Yearly$6.691 Year
- Fasty Pro Monthly2 variants$6.991 Month
- Fasty Pro Yearly2 variants$19.991 Year
- One Time Donation$4.99
- Fasty Basic One Time$9.99
- One Time Donation$9.99
Show 5 moreShow fewer
- One Time Donation$14.99
- One Time Donation$24.99
- One Time Donation$34.99
- Fasty Pro One Time2 variants$49.99
- One Time Donation$49.99
FastSloth
- Premium Lifetime$12.99
Questions
Is Intermittent Fasting Tracker free?
Is FastSloth free?
Which has better reviews, Intermittent Fasting Tracker or FastSloth?
Do Intermittent Fasting Tracker or FastSloth have ads?
Which is updated more often, Intermittent Fasting Tracker or FastSloth?
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