Comparison

ZenFast vs Fasting Timer by TrainerDay

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

Head to head
About

ZenFast

Track your intermittent fasting journey with a simple and elegant interface. Visualize your progress with a smart timer, choose from flexible plans, and monitor your history to stay motivated. Designed for privacy and ease of use.

Highlights
  • Smart fasting timer with progress ring
  • Flexible fasting plans (presets and custom)
  • Detailed history and streak tracking
  • Home screen widgets
  • Private and secure local data storage
  • Motivational quotes
  • Dark mode support
Features
Read full description

Achieve your health goals with ZenFast, the simplest and most elegant way to track your intermittent fasting journey. Whether you are a beginner or a seasoned faster, ZenFast provides the tools you need to stay consistent without the clutter. Designed with privacy and simplicity in mind, it helps you focus on what matters most: your progress. Key Features: * Smart Fasting Timer: Visualize your fast with a beautiful, intuitive circular progress ring. See your elapsed time and remaining time at a glance. * Flexible Fasting Plans: Choose from popular presets like 16:8, 18:6, 20:4, 14:10, 12:12, and OMAD (23:1), or create your own Custom schedule that fits your lifestyle. * Detailed History: Track your success with a built-in calendar view. Monitor your daily sessions, weekly averages, and longest streaks to stay motivated. * Home Screen Widgets: Keep an eye on your timer without even opening the app. * Private & Secure: Your data belongs to you. Fasting sessions are stored locally on your device and securely synced via your private iCloud. No accounts, no tracking, and no data selling. * Stay Motivated: Enjoy dynamic motivational quotes to keep you inspired during your fast. * Dark Mode Support: A stunning interface that looks great in both light and dark modes. Completely free to use. Download ZenFast today and take control of your health! Privacy Policy: https://terefe.us/#/privacy/zenfast/privacy

About

Fasting Timer by TrainerDay

This app simplifies intermittent fasting with a one-tap start and customizable durations. Track your progress visually and review your fasting history. It's designed for easy habit building without complex features.

Highlights
  • One-tap fast start
  • Customizable fasting durations
  • Flexible start times
  • Visual progress tracking
  • Fasting history
  • Shareable results
Features
Read full description

Fasting Timer is a simple, no-fuss intermittent fasting tracker designed to help you build healthy fasting habits. It's the ultimate app for ADF fasters. Each day when you start your fast. It's just one click, even when you forget to start it at your normal fasting time. Features: • One-tap start - Begin your fast instantly • Customizable durations - Set your preferred fasting window (12, 14, 16, 18, 20+ hours) • Flexible start times - Start now or schedule for later • Visual progress - See your fasting progress at a glance • History tracking - Review your completed fasts • Share your achievements - Export and share your fasting results Whether you're doing 16:8, 18:6, or any other intermittent fasting schedule, this app makes it easy to track your fasting windows without complicated setup or unnecessary features. Free and simple. Start fasting today.

Screenshots

ZenFast4 screens
Fasting Timer by TrainerDay4 screens

Verdict

The call

The clearest difference is ratings volume: Fasting Timer by TrainerDay at 19 against ZenFast's 1. Fasting Timer by TrainerDay also leads on iOS requirement (15.1 vs 17.6). 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 ZenFast against 4.9 for Fasting Timer by TrainerDay. That said, the two scores are not equally well evidenced: Fasting Timer by TrainerDay has 19 ratings behind it against 1, so its average is the more settled of the two.

Scorecard2 real differences · 7 level
ZenFast versus Fasting Timer by TrainerDay: the parameters behind the verdict, then further details
ParameterZenFastFasting Timer by TrainerDay
PriceFreeFree
Rating5.0 (1 ratings) — better4.9 (19 ratings)
Positive reviews—100.0% of reviews
Number of ratings119 — better
AdsNoNo
In-app purchasesNoNo
MonetizationFreeFree
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS17.615.1 — better
Further details — not scored
Size2 MB30 MB
Age rating4+17+
DeveloperCAPITAL GETAHUN TEREFETrainerDay Inc

In-app purchases

None

ZenFast

No in-app purchases

None

Fasting Timer by TrainerDay

No in-app purchases

Questions

Is ZenFast free?
ZenFast is free to download, with no in-app purchases.
Is Fasting Timer by TrainerDay free?
Fasting Timer by TrainerDay is free to download, with no in-app purchases.
Which has better reviews, ZenFast or Fasting Timer by TrainerDay?
ZenFast is rated higher. ZenFast averages 5.0 out of 5 from 1 ratings, while Fasting Timer by TrainerDay averages 4.9 from 19 ratings.
Do ZenFast or Fasting Timer by TrainerDay have ads?
Neither ZenFast nor Fasting Timer by TrainerDay shows ads.

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