# SureAccess vs Concentration Clock

The clearest difference is ads: SureAccess at none against Concentration Clock's shown. SureAccess also leads on device support (4 vs 2). Concentration Clock's advantage is iOS requirement (12.0 vs 14.0). 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 | SureAccess | Concentration Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 5 months | — |
| Size | 8 MB | 39 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [42Gears](https://appshunter.io/developer/670943901) | [Ais Business Mexico S.A. de C.V.](https://appshunter.io/developer/1764495798) |

## What reviewers say

### SureAccess

[App page](https://appshunter.io/ios/app/sureaccess/id6476919812)

**In-app purchases:** none


### Concentration Clock

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

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is SureAccess free?

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

### Is Concentration Clock free?

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

### Do SureAccess or Concentration Clock have ads?

Concentration Clock shows ads; SureAccess 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.*