# Zero vs Fasting Clock

The clearest difference is ads: Zero at none against Fasting Clock's shown. Zero also leads on update cadence (every 2 weeks vs every 5 months) and chart position (#133 vs unranked). Fasting Clock's advantage is iOS requirement (13.0 vs 17.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Zero sells 8 in-app purchases, starting at $9.99 per month and Fasting Clock sells 3 in-app purchases, starting at $0.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Zero ships an update every 2 weeks, Fasting Clock every 5 months. The most recent releases landed on November 11, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Zero | Fasting Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.8 (445K ratings)](https://appshunter.io/ios/app/zero-fasting-and-food-tracker/id1168348542/reviews)** | — |
| Number of ratings | **445K** | — |
| Positive reviews | 32.0% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 2 weeks** | Every 5 months |
| Monetization | Freemium | — |
| Best chart rank | **#133** | — |
| Size | 188 MB | 23 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [Zero Longevity Science, Inc.](https://appshunter.io/developer/1397458636) | [Afriwan Ahda](https://appshunter.io/developer/1330133888) |

## What reviewers say

### Zero

[App page](https://appshunter.io/ios/app/zero-fasting-and-food-tracker/id1168348542)

**Currently charting:** #133 Top Grossing · Health & Fitness (US App Store)

This app helps you track intermittent fasting and nutrition to achieve body composition changes. It integrates fasting, protein intake, meals, hydration, and habits for a holistic approach to weight loss and metabolic health.

**Highlights:** Intermittent fasting timers and streaks, Photo-based meal logging with macro analysis, Personalized daily protein targets, Water intake tracking, Habit tracking (movement, sleep, mood), Progress visualization and trend analysis, Expert insights on fasting and nutrition

**Features:** Family Sharing, Apple Watch app, Vision Pro support

**In-app purchases (8)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zero Plus Subscription | $9.99 | per month |
| Zero Plus Subscription | $9.99 | per month |
| Zero Plus Subscription | $69.99 | per year |
| Zero Plus Subscription | $69.99 | per year |
| Zero Plus Subscription | $69.99 | per year |
| Zero Plus Subscription | $69.99 | per year |
| Zero Plus Subscription | $89.99 | per year |
| Zero Plus Subscription | $89.99 | per year |

**What reviewers like**

- 🚀 Easy to use
- 📊 Helpful tracking and data
- 💡 Informative learning resources
- 🔍 Detailed fasting information
- 🤝 Sense of community

**What reviewers complain about**

- 💰 Expensive premium subscription
- 🔒 Forced account creation
- 🙄 Intrusive ads and upsells
- 🤔 Inconsistent or confusing UI changes
- 🐛 Syncing and login issues

**Reported bugs**

- Password reset problems
- Inaccurate fasting time tracking
- Inability to exit trial without subscribing

**Requested features**

- Custom fasting periods longer than 24 hours
- Ability to edit fasting type and duration
- Integration with more health/fitness apps
- Water intake tracking
- Personalized fasting recommendations


### Fasting Clock

[App page](https://appshunter.io/ios/app/fasting-clock-timer-and-streaks/id6757719151)

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium Access | $0.99 | per 7 days |
| Monthly Premium Access | $2.99 | per month |
| Yearly Premium Access | $17.99 | per year |


## Frequently asked questions

### Is Zero free?

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

### Is Fasting Clock free?

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

### Do Zero or Fasting Clock have ads?

Fasting Clock shows ads; Zero does not.

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

Zero ships an update every 2 weeks, and Fasting Clock every 5 months. Most recently, Zero was updated on November 11, 2026 and Fasting Clock on November 5, 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.*