# Kotlin Compiler vs Chray Zanst Teacher

The clearest difference is update cadence: Chray Zanst Teacher at every 4 weeks against Kotlin Compiler's every 6 months. Kotlin Compiler's advantage is iOS requirement (12.0 vs 15.1). 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.

Kotlin Compiler ships an update every 6 months, Chray Zanst Teacher every 4 weeks. The most recent releases landed on October 2, 2026 and October 6, 2026 respectively.

## The numbers

| Metric | Kotlin Compiler | Chray Zanst Teacher |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 4 weeks** |
| Size | 28 MB | 41 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OnePercent](https://appshunter.io/developer/1536020418) | [BALEN STAR](https://appshunter.io/developer/1896510859) |

## What reviewers say

### Kotlin Compiler

[App page](https://appshunter.io/ios/app/kotlin-compiler-run-kt-code/id1554903545)

**Features:** macOS Compatibility

**In-app purchases:** none


### Chray Zanst Teacher

[App page](https://appshunter.io/ios/app/chray-zanst-teacher/id6792031849)

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

**In-app purchases:** none


## Frequently asked questions

### Is Kotlin Compiler free?

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

### Is Chray Zanst Teacher free?

Chray Zanst Teacher is free to download, with no in-app purchases.

### Do Kotlin Compiler or Chray Zanst Teacher have ads?

Neither Kotlin Compiler nor Chray Zanst Teacher shows ads.

### Which is updated more often, Kotlin Compiler or Chray Zanst Teacher?

Kotlin Compiler ships an update every 6 months, and Chray Zanst Teacher every 4 weeks. Most recently, Kotlin Compiler was updated on October 2, 2026 and Chray Zanst Teacher on October 6, 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.*