# Kotlin Compiler vs Halobox

The clearest difference is in-app purchases: Kotlin Compiler at none against Halobox's 3. Kotlin Compiler also leads on iOS requirement (12.0 vs 14.0). Halobox's advantage is update cadence (every 2 months vs every 6 months). On price, ads and device support there is nothing between them.

Both are free to download. Halobox sells 3 in-app purchases, starting at $9.99 per month. Kotlin Compiler asks for nothing beyond the download.

Kotlin Compiler ships an update every 6 months, Halobox every 2 months. The most recent releases landed on October 2, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | Kotlin Compiler | Halobox |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 2 months** |
| Size | 28 MB | 163 MB |
| Requires iOS | **12.0** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [OnePercent](https://appshunter.io/developer/1536020418) | [The Angel Organisation Ltd](https://appshunter.io/developer/1122556668) |

## 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


### Halobox

[App page](https://appshunter.io/ios/app/halobox/id6739947392)

**Features:** macOS Compatibility, Family Sharing, Apple Wallet

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Holobox | $9.99 | per month |
| Halobox | $89.99 | per year |
| Halobox | $9.99 | one-time |


## Frequently asked questions

### Is Kotlin Compiler free?

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

### Is Halobox free?

Halobox is free to download, with in-app purchases available.

### Do Kotlin Compiler or Halobox have ads?

Neither Kotlin Compiler nor Halobox shows ads.

### Which is updated more often, Kotlin Compiler or Halobox?

Kotlin Compiler ships an update every 6 months, and Halobox every 2 months. Most recently, Kotlin Compiler was updated on October 2, 2026 and Halobox on October 5, 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.*