# Extend Studio vs KSS

The clearest difference is update cadence: KSS at every 5 weeks against Extend Studio's every 8 months. 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.

Extend Studio ships an update every 8 months, KSS every 5 weeks. Both last shipped on September 10, 2026.

## The numbers

| Metric | Extend Studio | KSS |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 5 weeks** |
| Size | 60 MB | 73 MB |
| Requires iOS | 16.0 | 16.0 |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [The Trustee for Extend Studio Unit Trust](https://appshunter.io/developer/1754505427) | [Strength Studio Kapunda PTY LTD](https://appshunter.io/developer/1830192916) |

## What reviewers say

### Extend Studio

[App page](https://appshunter.io/ios/app/extend-studio/id6504983289)

**Features:** macOS Compatibility

**In-app purchases:** none


### KSS

[App page](https://appshunter.io/ios/app/kss/id6749361509)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Extend Studio free?

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

### Is KSS free?

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

### Do Extend Studio or KSS have ads?

Neither Extend Studio nor KSS shows ads.

### Which is updated more often, Extend Studio or KSS?

Extend Studio ships an update every 8 months, and KSS every 5 weeks. Most recently, Extend Studio was updated on September 10, 2026 and KSS on September 10, 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.*