Comparison

Intermittent Fasting Tracker vs Zero Fast

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

Zero Fast

This app guides you through intermittent fasting, indicating when your body enters fat-burning and ketosis. It offers group challenges for motivation without requiring calorie counting or strict diets.

Highlights
  • Intermittent fasting timer
  • Fat-burning and ketosis indicators
  • Group fasting challenges
  • No calorie counting
  • Meal planner integration
Features
Read full description

Your fast, explained as it happens. Zero Fast times your fast, shows you the moment your body switches to fat-burning and ketosis, and lets you race friends in group challenges. No calorie counting. No strict diets.

Screenshots

Intermittent Fasting Tracker4 screens
Zero Fast4 screens

Verdict

The call

The clearest difference is ratings volume: Intermittent Fasting Tracker at 52K against Zero Fast's 1. Intermittent Fasting Tracker also leads on iOS requirement (17.0 vs 26.0). On price, rating, review sentiment and update cadence 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 Zero Fast sells 2 in-app purchases, starting at $3.99 per month. 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 Zero Fast. That said, the two scores are not equally well evidenced: Intermittent Fasting Tracker has 52K ratings behind it against 1, so its average is the more settled of the two. Written reviews are what separate them: 97% of Intermittent Fasting Tracker's written reviews are positive against 100% of Zero Fast's.

UpkeepUpdate frequency

Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.

Scorecard2 real differences · 8 level
Intermittent Fasting Tracker versus Zero Fast: the parameters behind the verdict, then further details
ParameterIntermittent Fasting TrackerZero Fast
PriceFreeFree
Rating4.9 (52K ratings)5.0 (1 ratings) — better
Positive reviews96.9% of reviews100.0% of reviews — better
Number of ratings52K — better1
Update frequencyEvery 2 weeksEvery 2 weeks
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 MB41 MB
Age rating12+12+
DeveloperKai OelfkeAPPE LATTE LIMITED

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%

Zero Fast

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
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

Zero Fast

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
2 purchases

Zero Fast

Subscriptions2
  • Zero Fast Monthly$3.991 Month
  • Zero Fast Annually$29.991 Year

Questions

Is Intermittent Fasting Tracker free?
Intermittent Fasting Tracker is free to download, with in-app purchases available.
Is Zero Fast free?
Zero Fast is free to download, with in-app purchases available.
Which has better reviews, Intermittent Fasting Tracker or Zero Fast?
Zero Fast is rated higher. Intermittent Fasting Tracker averages 4.9 out of 5 from 52K ratings, while Zero Fast averages 5.0 from 1 ratings.
Do Intermittent Fasting Tracker or Zero Fast have ads?
Neither Intermittent Fasting Tracker nor Zero Fast shows ads.
Which is updated more often, Intermittent Fasting Tracker or Zero Fast?
Intermittent Fasting Tracker ships an update every 2 weeks, and Zero Fast every 2 weeks. Most recently, Intermittent Fasting Tracker was updated on October 31, 2026 and Zero Fast on October 30, 2026.

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