# GS EXT vs Zurbo

The clearest difference is update cadence: Zurbo at monthly against GS EXT's every 9 months. GS EXT's advantage is iOS requirement (9.0 vs 15.0). 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.

GS EXT ships an update every 9 months, Zurbo monthly. The most recent releases landed on October 27, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | GS EXT | Zurbo |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Size | 13 MB | 53 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Grandstream](https://appshunter.io/developer/951547763) | [Zenlayer Inc](https://appshunter.io/developer/1630110941) |

## What reviewers say

### GS EXT

[App page](https://appshunter.io/ios/app/gs-ext/id1597033431)

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

**In-app purchases:** none


### Zurbo

[App page](https://appshunter.io/ios/app/zurbo/id6503039710)

**In-app purchases:** none


## Frequently asked questions

### Is GS EXT free?

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

### Is Zurbo free?

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

### Do GS EXT or Zurbo have ads?

Neither GS EXT nor Zurbo shows ads.

### Which is updated more often, GS EXT or Zurbo?

GS EXT ships an update every 9 months, and Zurbo monthly. Most recently, GS EXT was updated on October 27, 2026 and Zurbo on October 4, 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.*