# 4 vs Plank Timer

The clearest difference is in-app purchases: 4 at none against Plank Timer's 2. Plank Timer's advantage is iOS requirement (17.0 vs 26.4). On price, ads and device support there is nothing between them.

Both are free to download. Plank Timer sells 2 in-app purchases, starting at $2.99 per 7 days. 4 asks for nothing beyond the download.

## The numbers

| Metric | 4 | Plank Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | — | Every 6 weeks |
| Size | 11 MB | 6 MB |
| Requires iOS | 26.4 | **17.0** |
| Devices | **iPhone, iPad** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Xiong Chen](https://appshunter.io/developer/1891621301) | [Phuc Pham](https://appshunter.io/developer/1893081423) |

## What reviewers say

### 4

[App page](https://appshunter.io/ios/app/4-7-8-relax/id6761875414)

**Features:** macOS Compatibility

**In-app purchases:** none


### Plank Timer

[App page](https://appshunter.io/ios/app/plank-timer-core-workout/id6772185526)

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly | $2.99 | per 7 days |
| Yearly | $14.99 | per year |


## Frequently asked questions

### Is 4 free?

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

### Is Plank Timer free?

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

### Do 4 or Plank Timer have ads?

Neither 4 nor Plank Timer shows ads.

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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.*