# Hack the Code vs KALIBRE

The clearest difference is in-app purchases: Hack the Code at none against KALIBRE's 1. Hack the Code also leads on ads (none vs shown) and iOS requirement (13.0 vs 15.0). On price, update cadence and device support there is nothing between them.

Both are free to download. KALIBRE sells 1 one-off in-app purchase. Hack the Code asks for nothing beyond the download.

Hack the Code ships an update every 3 days, KALIBRE every 5 days. The most recent releases landed on October 9, 2026 and October 23, 2026 respectively.

## The numbers

| Metric | Hack the Code | KALIBRE |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 5 days |
| Size | 27 MB | 58 MB |
| Requires iOS | **13.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Miron Neborskii](https://appshunter.io/developer/1854743130) | [2VIBE TECH](https://appshunter.io/developer/6790836350) |

## What reviewers say

### Hack the Code

[App page](https://appshunter.io/ios/app/hack-the-code-duel/id6772782937)

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

**In-app purchases:** none


### KALIBRE

[App page](https://appshunter.io/ios/app/kalibre-reaction-time-test/id6778556946)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |


## Frequently asked questions

### Is Hack the Code free?

Hack the Code is free to download, with no in-app purchases.

### Is KALIBRE free?

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

### Do Hack the Code or KALIBRE have ads?

KALIBRE shows ads; Hack the Code does not.

### Which is updated more often, Hack the Code or KALIBRE?

Hack the Code ships an update every 3 days, and KALIBRE every 5 days. Most recently, Hack the Code was updated on October 9, 2026 and KALIBRE on October 23, 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.*