# Fast & Slim vs Vasten

The clearest difference is in-app purchases: Vasten at none against Fast & Slim's 1. Fast & Slim's advantage is iOS requirement (18.6 vs 26.5). On price there is nothing between them.

Both are free to download. Fast & Slim sells 1 one-off in-app purchase. Vasten asks for nothing beyond the download.

## The numbers

| Metric | Fast & Slim | Vasten |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | — | No |
| Update frequency | — | Every 2 days |
| Size | 7 MB | 2 MB |
| Requires iOS | **18.6** | 26.5 |
| Devices | — | **iPhone** |
| Age rating | 4+ | 4+ |
| Developer | [Sergi Franquet](https://appshunter.io/developer/1893606234) | [Dennis Van Dalen](https://appshunter.io/developer/1862992231) |

## What reviewers say

### Fast & Slim

[App page](https://appshunter.io/ios/app/fast-and-slim/id6762534638)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Fast & Slim | $0.99 | one-time |


### Vasten

[App page](https://appshunter.io/ios/app/vasten-fasting-timer/id6791755315)

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

**In-app purchases:** none


## Frequently asked questions

### Is Fast & Slim free?

Fast & Slim is free to download, with in-app purchases available.

### Is Vasten free?

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

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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.*