# Retro Buzz vs ISUD Zero

The clearest difference is iOS requirement: ISUD Zero at 15.0 against Retro Buzz's 17.0. On price, ads, in-app purchases and device support 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 | Retro Buzz | ISUD Zero |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | — |
| Size | 2 MB | 119 MB |
| Requires iOS | 17.0 | **15.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [Alexander Garmash](https://appshunter.io/developer/979428706) | [Suwitcha Sugthana](https://appshunter.io/developer/372726303) |

## What reviewers say

### Retro Buzz

[App page](https://appshunter.io/ios/app/retro-buzz/id6765830307)

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

**In-app purchases:** none


### ISUD Zero

[App page](https://appshunter.io/ios/app/isud-zero/id6765926399)

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

**In-app purchases:** none


## Frequently asked questions

### Is Retro Buzz free?

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

### Is ISUD Zero free?

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

### Do Retro Buzz or ISUD Zero have ads?

Neither Retro Buzz nor ISUD Zero 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.*