Intermittent Fasting Tracker vs Zero Fast
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
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.
- Interactive Widgets
- Notifications
- Streaks & Badges
- Charts & Trends
- Fasting Zones
- iCloud Sync
- Dark Mode
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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/
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.
- Intermittent fasting timer
- Fat-burning and ketosis indicators
- Group fasting challenges
- No calorie counting
- Meal planner integration
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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
Verdict
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
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.
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.
Both ship on a similar rhythm, roughly every 2 weeks. The most recent releases landed on October 31, 2026 and October 30, 2026 respectively.
| Parameter | Intermittent Fasting Tracker | Zero Fast |
|---|---|---|
| Price | Free | Free |
| Rating | 4.9 (52K ratings) | 5.0 (1 ratings) — better |
| Positive reviews | 96.9% of reviews | 100.0% of reviews — better |
| Number of ratings | 52K — better | 1 |
| Update frequency | Every 2 weeks | Every 2 weeks |
| Ads | No | No |
| In-app purchases | Yes | Yes |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Requires iOS | 17.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 94 MB | 41 MB |
| Age rating | 12+ | 12+ |
| Developer | Kai Oelfke | APPE LATTE LIMITED |
Customer experience
Intermittent Fasting Tracker
Zero Fast
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
Intermittent Fasting Tracker
- Fasty Monthly Donation$0.991 Month
- Fasty Basic Monthly$0.991 Month
- Fasty Monthly Donation$1.991 Month
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- 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 Time Donation$4.99
- Fasty Basic One Time$9.99
- One Time Donation$9.99
Show 5 moreShow fewer
- 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
Zero Fast
- Zero Fast Monthly$3.991 Month
- Zero Fast Annually$29.991 Year
Questions
Is Intermittent Fasting Tracker free?
Is Zero Fast free?
Which has better reviews, Intermittent Fasting Tracker or Zero Fast?
Do Intermittent Fasting Tracker or Zero Fast have ads?
Which is updated more often, Intermittent Fasting Tracker or Zero Fast?
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