# ZISA vs GSC Assistant

The clearest difference is iOS requirement: GSC Assistant at 12.0 against ZISA's 14.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

ZISA ships an update every 15 months, GSC Assistant every 18 months. The most recent releases landed on September 19, 2026 and September 21, 2026 respectively.

## The numbers

| Metric | ZISA | GSC Assistant |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 15 months** | Every 18 months |
| Size | 39 MB | 38 MB |
| Requires iOS | 14.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Ziehm Imaging GmbH](https://appshunter.io/developer/946862261) | [Grandstream](https://appshunter.io/developer/951547763) |

## What reviewers say

### ZISA

[App page](https://appshunter.io/ios/app/zisa/id1611630308)

**In-app purchases:** none


### GSC Assistant

[App page](https://appshunter.io/ios/app/gsc-assistant/id6447717839)

**In-app purchases:** none


## Frequently asked questions

### Is ZISA free?

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

### Is GSC Assistant free?

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

### Do ZISA or GSC Assistant have ads?

Neither ZISA nor GSC Assistant shows ads.

### Which is updated more often, ZISA or GSC Assistant?

ZISA ships an update every 15 months, and GSC Assistant every 18 months. Most recently, ZISA was updated on September 19, 2026 and GSC Assistant on September 21, 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.*