# BluKnox vs Matrix Alarm

The clearest difference is in-app purchases: BluKnox at none against Matrix Alarm's 1. On price, update cadence, ads and device support there is nothing between them.

Both are free to download. Matrix Alarm sells 1 one-off in-app purchase. BluKnox asks for nothing beyond the download.

BluKnox ships an update every 2 weeks, Matrix Alarm every 3 weeks. The most recent releases landed on October 24, 2026 and October 13, 2026 respectively.

## The numbers

| Metric | BluKnox | Matrix Alarm |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/matrix-alarm-a-code-rain-alarm/id6809701303/reviews)** |
| Number of ratings | — | **2** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 49 MB | 4 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [intellixs](https://appshunter.io/developer/1843465229) | [佳文 陈](https://appshunter.io/developer/6809271618) |

## What reviewers say

### BluKnox

[App page](https://appshunter.io/ios/app/bluknox/id6753320705)

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

**In-app purchases:** none


### Matrix Alarm

[App page](https://appshunter.io/ios/app/matrix-alarm-a-code-rain-alarm/id6809701303)

This app helps you break the snooze cycle with challenging wake-up tasks. Instead of a simple dismiss, you must complete a task to turn off the alarm, ensuring you get up on time. It offers customizable alarms and a distraction-free interface.

**Highlights:** Wake-up challenges, Multiple alarms, Custom alarm schedules, Adjustable alarm sounds, Snooze controls, Minimal interface, Dark mode

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Matrix Alarm Pro | $9.99 | one-time |


## Frequently asked questions

### Is BluKnox free?

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

### Is Matrix Alarm free?

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

### Do BluKnox or Matrix Alarm have ads?

Neither BluKnox nor Matrix Alarm shows ads.

### Which is updated more often, BluKnox or Matrix Alarm?

BluKnox ships an update every 2 weeks, and Matrix Alarm every 3 weeks. Most recently, BluKnox was updated on October 24, 2026 and Matrix Alarm on October 13, 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.*