# Concentration Clock vs Ambient Time

The clearest difference is ads: Ambient Time at none against Concentration Clock's shown. Ambient Time also leads on device support (5 vs 2). Concentration Clock's advantage is iOS requirement (12.0 vs 17.0). On price and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | Concentration Clock | Ambient Time |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | — | Every 6 days |
| Size | 39 MB | 25 MB |
| Requires iOS | **12.0** | 17.0 |
| Devices | iPhone, iPod | **iPhone, iPad, Mac, Apple TV, Apple Watch** |
| Age rating | 4+ | 4+ |
| Developer | [Ais Business Mexico S.A. de C.V.](https://appshunter.io/developer/1764495798) | [LanguageCraft](https://appshunter.io/developer/1029635130) |

## What reviewers say

### Concentration Clock

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

**Features:** macOS Compatibility

**In-app purchases:** none


### Ambient Time

[App page](https://appshunter.io/ios/app/ambient-time/id6778627510)

**Features:** Apple Watch app, Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is Concentration Clock free?

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

### Is Ambient Time free?

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

### Do Concentration Clock or Ambient Time have ads?

Concentration Clock shows ads; Ambient Time 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.*