# GenZD Zero vs Chess Clock

The clearest difference is iOS requirement: Chess Clock at 13.0 against GenZD Zero's 15.0. On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. GenZD Zero sells 1 one-off in-app purchase and Chess Clock sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

## The numbers

| Metric | GenZD Zero | Chess Clock |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.4 (42 ratings)](https://appshunter.io/ios/app/genzd-zero/id6705128370/reviews)** | — |
| Number of ratings | **42** | — |
| Positive reviews | 67.7% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | — |
| Monetization | Free with in-app purchases | — |
| Size | 70 MB | 36 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Infinite Evolution Technologies](https://appshunter.io/developer/382641860) | [Ralf Pitter](https://appshunter.io/developer/1148428044) |

## What reviewers say

### GenZD Zero

[App page](https://appshunter.io/ios/app/genzd-zero/id6705128370)

Run classic idTech 1 games and community mods on your iOS device with modern rendering capabilities. Enjoy enhanced graphics, custom controls, and controller support. You must provide your own game files.

**Highlights:** idTech 1 game engine support, Modern 3D rendering, Widescreen graphics, Dynamic lighting, Customizable touch controls, Game controller support, Local multiplayer

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Full Version Upgrade | $2.99 | one-time |


### Chess Clock

[App page](https://appshunter.io/ios/app/chess-clock-board-game-timer/id6790776737)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Chess Clock Pro | $8.99 | one-time |


## Frequently asked questions

### Is GenZD Zero free?

GenZD Zero is free to download, with in-app purchases available.

### Is Chess Clock free?

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

### Do GenZD Zero or Chess Clock have ads?

Neither GenZD Zero 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.*