Comparison

Just Fast vs My Fasting Timer

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

Head to head
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

About

My Fasting Timer

Easily start and track your intermittent fasting journey with a simple tap. This app offers popular fasting protocols and custom window options, helping you build consistency with streak tracking and progress visualization.

Highlights
  • One-tap fast start/stop
  • Pre-set and custom fasting windows
  • Eating window countdown
  • Daily streak tracking
  • Fasting history log
  • 100% private data
Features
Read full description

Start your fast with one tap. The timer counts up, shows your eating window, and tracks your streak — so you can focus on your day, not the clock. Choose from popular protocols: 16:8, 18:6, 20:4, or OMAD. Or create your own custom fasting window. Build consistency with daily streak tracking and weekly progress dots. KEY FEATURES - One-tap fast start and stop - Built-in protocols: 16:8, 18:6, 20:4, OMAD - Custom fasting window support - Eating window countdown and notifications - Daily streak tracking with weekly view - Fasting history log - 100% private — no account, no cloud, all data on your device Disclaimer: This app is for personal tracking purposes only. Intermittent fasting is not suitable for everyone. Consult your physician before starting any fasting regimen, especially if you have diabetes, are pregnant, or have a history of eating disorders.

Screenshots

Just Fast4 screens
My Fasting Timer4 screens

Verdict

The call

The clearest difference is update cadence: My Fasting Timer at every 8 days against Just Fast's every 3 weeks. Just Fast's advantage is ratings volume (7 vs 1). On price, rating, ads and in-app purchases 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. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Just Fast against 5.0 for My Fasting Timer. That said, the two scores are not equally well evidenced: Just Fast has 7 ratings behind it against 1, so its average is the more settled of the two.

UpkeepUpdate frequency

Just Fast ships an update every 3 weeks, My Fasting Timer every 8 days. The most recent releases landed on September 20, 2026 and August 18, 2026 respectively.

Scorecard2 real differences · 8 level
Just Fast versus My Fasting Timer: the parameters behind the verdict, then further details
ParameterJust FastMy Fasting Timer
PriceFreeFree
Rating5.0 (7 ratings)5.0 (1 ratings)
Positive reviews100.0% of reviews—
Number of ratings7 — better1
Update frequencyEvery 3 weeksEvery 8 days — better
AdsYesYes
In-app purchasesNoNo
MonetizationAd-supportedAd-supported
DevicesiPhone, iPad, iPod — betteriPhone, iPod
Requires iOS14.0 — better15.1
Further details — not scored
Size47 MB26 MB
Age rating17+4+
DeveloperAdrian CabalaBlas Prieto

Customer experience

Just Fast

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

My Fasting Timer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Just Fast

No in-app purchases

None

My Fasting Timer

No in-app purchases

Questions

Is Just Fast free?
Just Fast is free to download, with no in-app purchases.
Is My Fasting Timer free?
My Fasting Timer is free to download, with no in-app purchases.
Which has better reviews, Just Fast or My Fasting Timer?
Just Fast and My Fasting Timer are both rated 5.0 out of 5 on the App Store, from 7 and 1 ratings respectively.
Do Just Fast or My Fasting Timer have ads?
Both Just Fast and My Fasting Timer show ads.
Which is updated more often, Just Fast or My Fasting Timer?
Just Fast ships an update every 3 weeks, and My Fasting Timer every 8 days. Most recently, Just Fast was updated on September 20, 2026 and My Fasting Timer on August 18, 2026.

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