# GenZD Zero vs ModifAi

The clearest difference is update cadence: ModifAi at every 2 days against GenZD Zero's every 2 weeks. 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 ModifAi sells 1 in-app purchase, starting at $9.99 per month. Whichever you choose, the download price is not the number that matters.

GenZD Zero ships an update every 2 weeks, ModifAi every 2 days. Both last shipped on October 24, 2026.

## The numbers

| Metric | GenZD Zero | ModifAi |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (43 ratings)](https://appshunter.io/ios/app/genzd-zero/id6705128370/reviews)** | — |
| Number of ratings | **43** | — |
| Positive reviews | 65.6% of reviews | — |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 2 days** |
| Monetization | Free with in-app purchases | — |
| Size | 70 MB | 46 MB |
| Requires iOS | **15.0** | 15.1 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Yoshinobu Sugawara](https://appshunter.io/developer/382641860) | [Emre Harman](https://appshunter.io/developer/1895836392) |

## 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 |


### ModifAi

[App page](https://appshunter.io/ios/app/modifai-ai-car-studio/id6764570638)

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| ModifAi Pro | $9.99 | per month |


## Frequently asked questions

### Is GenZD Zero free?

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

### Is ModifAi free?

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

### Do GenZD Zero or ModifAi have ads?

Neither GenZD Zero nor ModifAi shows ads.

### Which is updated more often, GenZD Zero or ModifAi?

GenZD Zero ships an update every 2 weeks, and ModifAi every 2 days. Most recently, GenZD Zero was updated on October 24, 2026 and ModifAi on October 24, 2026.

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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.*