# Zero vs InterFasting

Zero and InterFasting both sit at 4.8 stars, but that hides the real split: 88% of InterFasting's written reviews are positive against 33% of Zero's. InterFasting also leads on update cadence (every 2 days vs every 2 weeks) and iOS requirement (15.0 vs 17.0). Zero's advantage is ads (none vs shown) and ratings volume (445K vs 267). On price, rating, in-app purchases and monetization model there is nothing between them.

Both are free to download. Zero sells 10 in-app purchases, starting at $9.99 per month and InterFasting sells 3 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 — 4.8 for Zero against 4.8 for InterFasting. That said, the two scores are not equally well evidenced: Zero has 445K ratings behind it against 267, so its average is the more settled of the two. Written reviews are what separate them: 33% of Zero's written reviews are positive against 88% of InterFasting's.

Zero ships an update every 2 weeks, InterFasting every 2 days. The most recent releases landed on September 24, 2026 and September 22, 2026 respectively.

## The numbers

| Metric | Zero | InterFasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (445K ratings)](https://appshunter.io/ios/app/zero-fasting-and-food-tracker/id1168348542/reviews) | [4.8 (267 ratings)](https://appshunter.io/ios/app/interfasting-fasting-timer/id1467464443/reviews) |
| Number of ratings | **445K** | 267 |
| Positive reviews | 32.6% of reviews | **88.4% of reviews** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Freemium | Free with in-app purchases |
| Best chart rank | **#121** | — |
| Size | 238 MB | 85 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, Apple Watch | **iPhone, iPod, Apple Watch** |
| Age rating | 17+ | 4+ |
| Developer | [Zero Longevity Science, Inc.](https://appshunter.io/developer/1397458636) | [Kim Yunhoo](https://appshunter.io/developer/1464827169) |

## What reviewers say

### Zero

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

**Currently charting:** #121 Top Grossing · Health & Fitness (US App Store)

This app tracks intermittent fasting and nutrition to help users achieve real 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, Smart meal logging with photo recognition, Personalized daily protein target tracking, Integrated fasting and protein tracking, Water and habit tracking, Science-based insights on fasting and nutrition

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Zero Plus Subscription | $9.99 | per month |
| Zero Plus Subscription | $9.99 | per month |
| Zero Plus Subscription | $39.99 | per year |
| Zero Plus Subscription | $49.99 | 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 | $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


### InterFasting

[App page](https://appshunter.io/ios/app/interfasting-fasting-timer/id1467464443)

This app helps users succeed with intermittent fasting through scientific and systematic management. It offers AI-powered schedule and calorie recommendations, a simple timer, and comprehensive tracking of fasting hours, meals, workouts, and water intake. Users can visualize progress and receive detailed reports to build healthy habits.

**Highlights:** AI fasting schedule recommendations, AI food calorie calculation, Intermittent fasting timer, Customizable fasting plans, All-in-one health tracking, Fasting analysis and reports, Home screen widget

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium 1 month | $3.99 | per month |
| Gandan Premium Annual | $12.99 | per year |
| Premium User | $12.99 | one-time |


## Frequently asked questions

### Is Zero free?

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

### Is InterFasting free?

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

### Which has better reviews, Zero or InterFasting?

Zero and InterFasting are both rated 4.8 out of 5 on the App Store, from 445K and 267 ratings respectively.

### Do Zero or InterFasting have ads?

InterFasting shows ads; Zero does not.

### Which is updated more often, Zero or InterFasting?

Zero ships an update every 2 weeks, and InterFasting every 2 days. Most recently, Zero was updated on September 24, 2026 and InterFasting on September 22, 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.*