# Concentration Clock vs Coffee Ripples Timer

The clearest difference is in-app purchases: Concentration Clock at none against Coffee Ripples Timer's 1. Concentration Clock also leads on iOS requirement (12.0 vs 15.6). On price, ads and device support there is nothing between them.

Both are free to download. Coffee Ripples Timer sells 1 one-off in-app purchase. Concentration Clock asks for nothing beyond the download.

## The numbers

| Metric | Concentration Clock | Coffee Ripples Timer |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | Yes | Yes |
| Size | 39 MB | 33 MB |
| Requires iOS | **12.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Ais Business Mexico S.A. de C.V.](https://appshunter.io/developer/1764495798) | [akira ohmachi](https://appshunter.io/developer/1338624340) |

## What reviewers say

### Concentration Clock

[App page](https://appshunter.io/ios/app/concentration-clock/id6740191750)

**Features:** macOS Compatibility

**In-app purchases:** none


### Coffee Ripples Timer

[App page](https://appshunter.io/ios/app/coffee-ripples-timer/id6759555573)

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

**In-app purchases (1)**

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


## Frequently asked questions

### Is Concentration Clock free?

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

### Is Coffee Ripples Timer free?

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

### Do Concentration Clock or Coffee Ripples Timer have ads?

Both Concentration Clock and Coffee Ripples Timer show 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.*