# ZeroNAS vs Chess Clock

The clearest difference is in-app purchases: ZeroNAS at none against Chess Clock's 3. On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. Chess Clock sells 3 in-app purchases, starting at $3.99 per 7 days. ZeroNAS asks for nothing beyond the download.

## The numbers

| Metric | ZeroNAS | Chess Clock |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Size | 143 MB | 45 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Fujian Centerm Information Co., Ltd](https://appshunter.io/developer/807316807) | [Mobin Akhter](https://appshunter.io/developer/1812505286) |

## What reviewers say

### ZeroNAS

[App page](https://appshunter.io/ios/app/zeronas/id6754591921)

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

**In-app purchases:** none


### Chess Clock

[App page](https://appshunter.io/ios/app/chess-clock-tockrelay/id6799759326)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Premium | $3.99 | per 7 days |
| Yearly Premium | $29.99 | per year |
| Lifetime Premium | $49.99 | one-time |


## Frequently asked questions

### Is ZeroNAS free?

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

### Is Chess Clock free?

Chess Clock is free to download, with in-app purchases available.

### Do ZeroNAS or Chess Clock have ads?

Neither ZeroNAS nor Chess Clock 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.*