Comparison

Intermittent Fasting Tracker vs FastSloth

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Interactive Widgets
  • Notifications
  • Streaks & Badges
  • Charts & Trends
  • Fasting Zones
  • iCloud Sync
  • Dark Mode
Features
Read full description

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/

About

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.

Highlights
  • 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
Features
Read full description

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

Intermittent Fasting Tracker4 screens
FastSloth4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard2 real differences · 8 level
Intermittent Fasting Tracker versus FastSloth: the parameters behind the verdict, then further details
ParameterIntermittent Fasting TrackerFastSloth
PriceFreeFree
Rating4.9 (52K ratings)5.0 (5 ratings) — better
Positive reviews96.9% of reviews—
Number of ratings52K — better5
Update frequencyEvery 2 weeksWeekly — better
AdsNoNo
In-app purchasesYesYes
MonetizationFree with in-app purchasesFree with in-app purchases
DevicesiPhone, Apple WatchiPhone, iPad
Requires iOS17.0 — better26.0
Further details — not scored
Size94 MB10 MB
Age rating12+12+
DeveloperKai OelfkeDarren Paul

Customer experience

Intermittent Fasting Tracker

All ratings52,113 ratings
Positive97.8%
Neutral1.5%
Negative0.7%
Written reviews2,957 reviews
Positive96.9%
Neutral1.6%
Negative1.5%

FastSloth

All ratings5 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

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

17 purchases

Intermittent Fasting Tracker

Subscriptions9
  • Fasty Monthly Donation$0.991 Month
  • Fasty Basic Monthly$0.991 Month
  • Fasty Monthly Donation$1.991 Month
Show 6 more
  • 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-time8
  • One Time Donation$4.99
  • Fasty Basic One Time$9.99
  • One Time Donation$9.99
Show 5 more
  • 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
1 purchases

FastSloth

One-time1
  • Premium Lifetime$12.99

Questions

Is Intermittent Fasting Tracker free?
Intermittent Fasting Tracker is free to download, with in-app purchases available.
Is FastSloth free?
FastSloth is free to download, with in-app purchases available.
Which has better reviews, Intermittent Fasting Tracker or FastSloth?
FastSloth is rated higher. Intermittent Fasting Tracker averages 4.9 out of 5 from 52K ratings, while FastSloth averages 5.0 from 5 ratings.
Do Intermittent Fasting Tracker or FastSloth have ads?
Neither Intermittent Fasting Tracker nor FastSloth shows ads.
Which is updated more often, Intermittent Fasting Tracker or FastSloth?
Intermittent Fasting Tracker ships an update every 2 weeks, and FastSloth weekly. Most recently, Intermittent Fasting Tracker was updated on October 30, 2026 and FastSloth on October 28, 2026.

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