Comparison

Intermittent Fast(ing) Tracker vs Just Fast

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

Head to head
About

Intermittent Fast(ing) Tracker

This app helps you track intermittent fasting periods with a simple timer, history, and trend analysis. Receive zone change and reminder notifications, and utilize widgets and Siri shortcuts for easy control. It prioritizes user privacy with no account needed and a one-time purchase.

Highlights
  • Fast and Feast Timer
  • Fasting History and Editing
  • Trend Analysis (sessions, durations)
  • Zone Change Notifications
  • Interactive Widgets
  • Siri and Shortcuts Integration
Features
Read full description

Fast Tracker is an Intermittent Fasting Tracker designed with a focus on simplicity, reliability, and privacy. What can Fast Tracker do? ## Fast and Feast Timer - The Timer indicates the duration since your last fast or the duration of your ongoing fast - It also indicates the current zone you are in such as the Fat Burning Zone - Easily initiate or conclude a fasting period with the start/stop button ## Fasting History - Browse your fasting history, all of it - Edit your fasting history effortlessly - Add a fast manually if you forgot to start a timer ## Trends - Get the total count of your fasting sessions - Track your minimum and maximum fast durations - Look at the average duration of your fasts over 7 days, 30 days, and overall ## Zone Changes and Fast Reminder Notifications - Get a notification every time your fasting zone changes - Get a notification 4, 8, 10 and 12 jours after your last fast - Start or stop your fast timer directly from the notification you get, no need to open the app ## Widgets - Have a glance at your timer thanks Fast Tracker's Widgets - Start and stop fasting from the interactive ones - Add Widgets everywhere, it adapts to (almost) every size ## Siri and Shortcuts - Siri, start fasting with Fast Tracker - Siri, stop fasting with Fast Tracker - Create your own Shortcuts to match your own fasting routine + Fast Tracker is also... ** Simple and Non-Intrusive ** Fast Tracker is crafted to be user-friendly and unobtrusive.  Experience the ease of use without any overbearing nudges, allowing you to focus on your fasting goals without unnecessary distractions. ** A Worry-Free One-Time Purchase ** No subscription, no hidden fees, no user account needed. Start tracking you fasts, don’t worry about being tracked. ** Privacy-Centric ** Your privacy matters. Fast Tracker operates with a strict privacy-first approach.  Your data is entirely yours, offering the capability to export and import it at your convenience.  Your data is stored privately on and synced across devices via your own iCloud account.

About

Just Fast

This app tracks both your fasting periods and your eating windows, offering a unique dual-countdown feature. It visualizes metabolic phases like fat burning and ketosis, supports various fasting methods, and provides insights into your progress. It's designed to be user-friendly and privacy-conscious, working entirely offline.

Highlights
  • Eating window countdown
  • Fasting phases visualization
  • Support for multiple fasting methods
  • Streak tracking with grace periods
  • Pattern insights
  • Weight and BMI tracking
  • Smart notifications
  • 100% offline functionality
Features
Read full description

Just Fast is the intermittent fasting timer that tracks both your fast and your eating window — a combination no other fasting app offers. Whether you're new to 16:8 or pushing into 20:4, OMAD, or custom schedules, Just Fast gives you a clear, distraction-free timer alongside the insights to understand what your body is doing and build habits that stick. EATING WINDOW COUNTDOWN — ONLY IN JUST FAST Most fasting apps tell you when your fast ends. Just Fast also tells you when your eating window closes. Know exactly how much time you have left to eat, so you stop overrunning your window by accident. KEY FEATURES • Eating Window Countdown — track when your eating window closes, not just when your fast ends • Fasting Phases — see fat burning, ketosis, and autophagy stages visualized in real time • All Major Fasting Methods — 16:8, 18:6, 20:4, OMAD, 14:10, 12:12, 24h, and custom durations • Streak Tracking with Grace Periods — maintain your momentum even on tough days • Pattern Insights — review your fasting history and discover your most consistent windows • Weight Tracking with BMI — log weight entries and track progress over time • Smart Notifications — reminders that support your schedule, not disrupt it • Beginner-Friendly Onboarding — choose your goal, fasting expertise, and preferred schedule in minutes • 100% Offline — no account, no signup, no cloud required • 15 Languages — English, German, French, Spanish, Polish, Portuguese, Italian, Japanese, Korean, Arabic, Russian, Swedish, Finnish, Norwegian, Turkish UNDERSTAND YOUR FAST, NOT JUST YOUR TIMER Just Fast visualizes the metabolic phases of fasting as they happen: fat burning begins around hour 12, ketosis deepens past hour 18, autophagy activates beyond hour 24. You do not need a biology degree — the app shows you where you are and what your body is doing. FREE AND LIGHTWEIGHT All core features are free. No subscription. No paywall. Just Fast is also one of the lightest full-featured fasting apps available — under 50MB download, compared to 200MB+ for most competitors. Fast to download, fast to start. Note: The app is free with light banner ads on secondary screens (history, settings). The main fasting timer screen is completely ad-free. PERFECT FOR • Beginners starting their first 16:8 protocol • Intermediate fasters exploring 18:6, 20:4, or OMAD • Anyone who wants fasting phases explained without complexity • People managing multiple fasting schedules across 15 languages • Privacy-conscious users who prefer no-account apps Download Just Fast and start your first fast today — no signup required. --- Privacy Policy: https://justfast.app/privacy Support: support@justfast.app

Screenshots

Intermittent Fast(ing) Tracker4 screens
Just Fast4 screens

Verdict

The call

The clearest difference is price: Just Fast at Free against Intermittent Fast(ing) Tracker's $4.99. Just Fast also leads on rating (5.0 vs 3.7) and update cadence (every 3 weeks vs every 3 months). Intermittent Fast(ing) Tracker's advantage is ads (none vs shown). On review sentiment, ratings volume, 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

CostPrice · In-app purchases · Ads · Monetization

Just Fast is free to download; Intermittent Fast(ing) Tracker costs $4.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

Just Fast holds the better App Store score, 5.0 against 3.7. Both are backed by a comparable volume of ratings — 3 and 7 respectively. Written reviews split almost evenly too, at 100% and 100% positive.

UpkeepUpdate frequency

Intermittent Fast(ing) Tracker ships an update every 3 months, Just Fast every 3 weeks. The most recent releases landed on September 24, 2026 and September 20, 2026 respectively.

Scorecard6 real differences · 4 level
Intermittent Fast(ing) Tracker versus Just Fast: the parameters behind the verdict, then further details
ParameterIntermittent Fast(ing) TrackerJust Fast
Price$4.99Free — better
Rating3.7 (3 ratings)5.0 (7 ratings) — better
Positive reviews100.0% of reviews100.0% of reviews
Number of ratings37 — better
Update frequencyEvery 3 monthsEvery 3 weeks — better
AdsNo — betterYes
In-app purchasesNoNo
MonetizationPaidAd-supported — better
DevicesiPhone, iPad, Mac, Apple Watch — betteriPhone, iPad, iPod
Requires iOS17.014.0 — better
Further details — not scored
Size7 MB47 MB
Age rating17+17+
DeveloperKevin CadorAdrian Cabala

Customer experience

Intermittent Fast(ing) Tracker

All ratings3 ratings
Positive66.7%
Neutral0.0%
Negative33.3%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Just Fast

All ratings7 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews2 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Intermittent Fast(ing) Tracker

No in-app purchases

None

Just Fast

No in-app purchases

Questions

Is Intermittent Fast(ing) Tracker free?
Intermittent Fast(ing) Tracker costs $4.99, with no in-app purchases.
Is Just Fast free?
Just Fast is free to download, with no in-app purchases.
Which has better reviews, Intermittent Fast(ing) Tracker or Just Fast?
Just Fast is rated higher. Intermittent Fast(ing) Tracker averages 3.7 out of 5 from 3 ratings, while Just Fast averages 5.0 from 7 ratings.
Do Intermittent Fast(ing) Tracker or Just Fast have ads?
Just Fast shows ads; Intermittent Fast(ing) Tracker does not.
Which is updated more often, Intermittent Fast(ing) Tracker or Just Fast?
Intermittent Fast(ing) Tracker ships an update every 3 months, and Just Fast every 3 weeks. Most recently, Intermittent Fast(ing) Tracker was updated on September 24, 2026 and Just Fast on September 20, 2026.

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