# Target Four vs Concentration Card

The clearest difference is in-app purchases: Concentration Card at none against Target Four's 1. Concentration Card also leads on iOS requirement (12.4 vs 26.0). Target Four's advantage is ads (none vs shown). On price and device support there is nothing between them.

Both are free to download. Target Four sells 1 one-off in-app purchase. Concentration Card asks for nothing beyond the download.

## The numbers

| Metric | Target Four | Concentration Card |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | — |
| Size | 20 MB | 135 MB |
| Requires iOS | 26.0 | **12.4** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Gerhard Lentschik](https://appshunter.io/developer/629988041) | [RamSystem](https://appshunter.io/developer/393507698) |

## What reviewers say

### Target Four

[App page](https://appshunter.io/ios/app/target-four/id1330513500)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Advertising | $1.99 | one-time |


### Concentration Card

[App page](https://appshunter.io/ios/app/concentration-card/id6449998586)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Target Four free?

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

### Is Concentration Card free?

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

### Do Target Four or Concentration Card have ads?

Concentration Card shows ads; Target Four does not.

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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.*