# PerfectFast vs Water Fasting

The clearest difference is in-app purchases: PerfectFast at none against Water Fasting's 2. PerfectFast also leads on update cadence (every 10 days vs every 3 weeks). On price, rating, ratings volume and ads there is nothing between them.

Both are free to download. Water Fasting sells 2 in-app purchases, starting at $9.99 per month. PerfectFast asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 5.0 for PerfectFast against 5.0 for Water Fasting. Both are backed by a comparable volume of ratings — 2 and 2 respectively.

PerfectFast ships an update every 10 days, Water Fasting every 3 weeks. The most recent releases landed on October 3, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | PerfectFast | Water Fasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [5.0 (2 ratings)](https://appshunter.io/ios/app/perfectfast/id6759067877/reviews) | [5.0 (2 ratings)](https://appshunter.io/ios/app/water-fasting-tracker-and-timer/id6767459809/reviews) |
| Number of ratings | 2 | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 10 days** | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Size | 27 MB | 19 MB |
| Requires iOS | **17.6** | 18.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 12+ | 12+ |
| Developer | [Idan Lupinsky](https://appshunter.io/developer/1876630037) | [SUKRU DEMIR](https://appshunter.io/developer/1856005733) |

## What reviewers say

### PerfectFast

[App page](https://appshunter.io/ios/app/perfectfast/id6759067877)

This app helps you track intermittent and extended fasting periods with a clean, focused interface. It supports various fasting schedules, custom durations, and provides detailed history and statistics to monitor your progress.

**Highlights:** Intermittent and extended fast tracking, Custom fasting schedules, Fasting history and statistics, Reminders and notifications, Apple Watch companion app, Live Activity support

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

**In-app purchases:** none


### Water Fasting

[App page](https://appshunter.io/ios/app/water-fasting-tracker-and-timer/id6767459809)

Track your fasting journey with a visually engaging water orb timer. Understand your body's stages, log hydration, and gain personalized wellness insights. Offers science-backed information and a premium minimalist design.

**Highlights:** Living water orb timer with gyroscope physics, Six science-backed fasting stages, Hydration and wellness logging, Personalized wellness insights, Premium minimalist design, Data export

**Features:** Vision Pro support

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Water Fasting Pro | $9.99 | per month |
| Water Fasting Pro | $59.99 | per year |


## Frequently asked questions

### Is PerfectFast free?

PerfectFast is free to download, with no in-app purchases.

### Is Water Fasting free?

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

### Which has better reviews, PerfectFast or Water Fasting?

PerfectFast and Water Fasting are both rated 5.0 out of 5 on the App Store, from 2 and 2 ratings respectively.

### Do PerfectFast or Water Fasting have ads?

Neither PerfectFast nor Water Fasting shows ads.

### Which is updated more often, PerfectFast or Water Fasting?

PerfectFast ships an update every 10 days, and Water Fasting every 3 weeks. Most recently, PerfectFast was updated on October 3, 2026 and Water Fasting on September 30, 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.*