# Gal Kaspers Studio vs ISRTRI

The clearest difference is update cadence: ISRTRI at weekly against Gal Kaspers Studio's every 9 months. Gal Kaspers Studio's advantage is iOS requirement (15.1 vs 18.6). 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.

Gal Kaspers Studio ships an update every 9 months, ISRTRI weekly. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | Gal Kaspers Studio | ISRTRI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Weekly** |
| Size | 52 MB | 17 MB |
| Requires iOS | **15.1** | 18.6 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Arbox LTD](https://appshunter.io/developer/1021244486) | [ran kellner](https://appshunter.io/developer/1372973121) |

## What reviewers say

### Gal Kaspers Studio

[App page](https://appshunter.io/ios/app/gal-kaspers-studio/id1474850015)

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

**In-app purchases:** none


### ISRTRI

[App page](https://appshunter.io/ios/app/isrtri/id1546991465)

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

**In-app purchases:** none


## Frequently asked questions

### Is Gal Kaspers Studio free?

Gal Kaspers Studio is free to download, with no in-app purchases.

### Is ISRTRI free?

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

### Do Gal Kaspers Studio or ISRTRI have ads?

Neither Gal Kaspers Studio nor ISRTRI shows ads.

### Which is updated more often, Gal Kaspers Studio or ISRTRI?

Gal Kaspers Studio ships an update every 9 months, and ISRTRI weekly. Most recently, Gal Kaspers Studio was updated on October 15, 2026 and ISRTRI on October 2, 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.*