# Fastology vs Water Fasting

The clearest difference is in-app purchases: Fastology at none against Water Fasting's 2. Fastology also leads on ratings volume (10 vs 2). On price, rating, update cadence 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. Fastology asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.9 for Fastology against 5.0 for Water Fasting. That said, the two scores are not equally well evidenced: Fastology has 10 ratings behind it against 2, so its average is the more settled of the two.

Both ship on a similar rhythm, roughly every 3 weeks. The most recent releases landed on September 26, 2026 and August 31, 2026 respectively.

## The numbers

| Metric | Fastology | Water Fasting |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.9 (10 ratings)](https://appshunter.io/ios/app/fastology-fasting-tracker/id6761324779/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/water-fasting-tracker-and-timer/id6767459809/reviews)** |
| Number of ratings | **10** | 2 |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | Every 3 weeks |
| Monetization | **Free** | Freemium |
| Size | 40 MB | 19 MB |
| Requires iOS | **17.0** | 18.0 |
| Devices | iPhone, Apple Watch | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [SmallScale Works LLC](https://appshunter.io/developer/1888909483) | [SUKRU DEMIR](https://appshunter.io/developer/1856005733) |

## What reviewers say

### Fastology

[App page](https://appshunter.io/ios/app/fastology-fasting-tracker/id6761324779)

This app provides structured tracking for intermittent fasting, going beyond simple timers. It helps users follow specific fasting schedules with clear phase progress, build consistency through streaks, and manage a flexible weekly plan. Focuses on discipline and reducing guesswork for a clearer fasting experience.

**Highlights:** Track various fast types (16:8, OMAD, extended), Live phase-by-phase progress tracking, Build streaks from completed fasts, Flexible weekly fasting schedule, Review fasting history, Ask fasting questions with reviewed answers, Siri and Shortcuts integration

**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 Fastology free?

Fastology 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, Fastology or Water Fasting?

Water Fasting is rated higher. Fastology averages 4.9 out of 5 from 10 ratings, while Water Fasting averages 5.0 from 2 ratings.

### Do Fastology or Water Fasting have ads?

Neither Fastology nor Water Fasting shows ads.

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

Fastology ships an update every 3 weeks, and Water Fasting every 3 weeks. Most recently, Fastology was updated on September 26, 2026 and Water Fasting on August 31, 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.*