# ADVANTAGE Diary vs FastSloth

The clearest difference is in-app purchases: ADVANTAGE Diary at none against FastSloth's 1. ADVANTAGE Diary also leads on iOS requirement (11.0 vs 26.0). FastSloth's advantage is update cadence (every 6 days vs every 16 months). On price, ads and device support there is nothing between them.

Both are free to download. FastSloth sells 1 one-off in-app purchase. ADVANTAGE Diary asks for nothing beyond the download.

ADVANTAGE Diary ships an update every 16 months, FastSloth every 6 days. The most recent releases landed on October 11, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | ADVANTAGE Diary | FastSloth |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (4 ratings)](https://appshunter.io/ios/app/fastsloth-fasting-tracker/id6759827972/reviews)** |
| Number of ratings | — | **4** |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 16 months | **Every 6 days** |
| Monetization | — | Free with in-app purchases |
| Size | 31 MB | 9 MB |
| Requires iOS | **11.0** | 26.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 17+ | 12+ |
| Developer | [Cambridge Digital Health Ltd.](https://appshunter.io/developer/1297295745) | [Darren Paul](https://appshunter.io/developer/1874841503) |

## What reviewers say

### ADVANTAGE Diary

[App page](https://appshunter.io/ios/app/advantage-diary/id1666898476)

**Features:** macOS Compatibility

**In-app purchases:** none


### FastSloth

[App page](https://appshunter.io/ios/app/fastsloth-fasting-tracker/id6759827972)

This app helps you track intermittent fasting with customizable schedules and real-time indicators of your body's stages. It also includes hydration logging, weight tracking with visual progress charts, and smart notifications to keep you on track. All your data stays private on your device.

**Highlights:** Customizable fasting schedules, Real-time ketosis and autophagy indicators, Hydration logging and reminders, Weight tracking with progress charts, Streak tracking and milestone badges, Home screen widgets, Private, no account required

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Lifetime | $1.99 | one-time |


## Frequently asked questions

### Is ADVANTAGE Diary free?

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

### Is FastSloth free?

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

### Do ADVANTAGE Diary or FastSloth have ads?

Neither ADVANTAGE Diary nor FastSloth shows ads.

### Which is updated more often, ADVANTAGE Diary or FastSloth?

ADVANTAGE Diary ships an update every 16 months, and FastSloth every 6 days. Most recently, ADVANTAGE Diary was updated on October 11, 2026 and FastSloth on October 16, 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.*