# Fasting vs Zero Cal

The clearest difference is monetization model: Fasting at freemium against Zero Cal's subscription. Fasting also leads on ratings volume (19 vs 1). Zero Cal's advantage is rating (5.0 vs 4.8). On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Fasting sells 14 in-app purchases, starting at $3.99 per 7 days and Zero Cal sells 2 in-app purchases, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

Zero Cal holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Fasting has 19 ratings behind it against 1, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 5 days. The most recent releases landed on September 21, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | Fasting | Zero Cal |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (19 ratings)](https://appshunter.io/ios/app/fasting-intermittent-timer/id6759842051/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/zero-cal/id6794630122/reviews)** |
| Number of ratings | **19** | 1 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 5 days | Every 5 days |
| Monetization | **Freemium** | Subscription |
| Size | 171 MB | 68 MB |
| Requires iOS | 16.4 | 16.4 |
| Devices | iPhone, iPad, Apple Watch | iPhone, iPad, Apple Watch |
| Age rating | 4+ | 4+ |
| Developer | [Eduard Bulava](https://appshunter.io/developer/1802549063) | [Oleg Filimonov](https://appshunter.io/developer/1769783383) |

## What reviewers say

### Fasting

[App page](https://appshunter.io/ios/app/fasting-intermittent-timer/id6759842051)

This app simplifies intermittent fasting with visual progress tracking and insights into your body's metabolic zones. It offers various fasting plans, hydration tracking, and achievements to keep you motivated. Advanced features include body tracking, progress photos, and an AI coach for personalized guidance.

**Highlights:** Visual fasting timer with metabolic zone insights, Multiple built-in and custom fasting plans, Hydration and weight/body measurement tracking, Progress photo comparison and time-lapses, On-device AI fasting coach, Live Activities integration for Lock Screen and Dynamic Island, Achievements and shareable progress cards

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (14)**

| Purchase | Price | Billing |
| --- | --- | --- |
| FastBreak Premium Weekly | $3.99 | per 7 days |
| FastBreak Premium Monthly | $6.39 | per month |
| FastBreak Premium Monthly | $7.99 | per month |
| FastBreak Premium Monthly | $9.99 | per month |
| Premium Monthly | $14.99 | per month |
| Premium Monthly | $24.99 | per month |
| Premium Anual | $29.99 | per year |
| FastBreak Premium Annual | $31.99 | per year |
| FastBreak Premium Annual | $34.99 | per year |
| FastBreak Premium Annual | $39.99 | per year |
| FastBreak Premium Jährlich | $39.99 | per year |
| FastBreak Premium Anual | $59.99 | per year |
| Premium Anual | $79.99 | per year |
| Lifetime | $79.99 | one-time |


### Zero Cal

[App page](https://appshunter.io/ios/app/zero-cal/id6794630122)

Effortlessly track your daily calorie and macronutrient intake using AI-powered food logging.  Choose from voice, text, photo, barcode, or label scanning to quickly log meals and monitor your progress with visual feedback.

**Highlights:** AI-powered food logging, Log via voice, text, photo, barcode, or label, Calorie and macro estimates, Visual progress tracking, AI food context analysis, Multi-language support

**Features:** macOS Compatibility, Apple Watch app, Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zero Cal Monthly | $9.99 | per month |
| Zero Cal Yearly | $89.99 | per year |


## Frequently asked questions

### Is Fasting free?

Fasting is free to download, with in-app purchases available.

### Is Zero Cal free?

Zero Cal is free to download, with in-app purchases available.

### Which has better reviews, Fasting or Zero Cal?

Zero Cal is rated higher. Fasting averages 4.8 out of 5 from 19 ratings, while Zero Cal averages 5.0 from 1 ratings.

### Do Fasting or Zero Cal have ads?

Neither Fasting nor Zero Cal shows ads.

### Which is updated more often, Fasting or Zero Cal?

Fasting ships an update every 5 days, and Zero Cal every 5 days. Most recently, Fasting was updated on September 21, 2026 and Zero Cal on September 17, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*