# MonstrumAI vs NyxAstra

The clearest difference is ads: NyxAstra at none against MonstrumAI's shown. NyxAstra also leads on update cadence (every 3 days vs every 2 weeks). On price, in-app purchases, device support and iOS requirement there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

MonstrumAI ships an update every 2 weeks, NyxAstra every 3 days. Both last shipped on October 29, 2026.

## The numbers

| Metric | MonstrumAI | NyxAstra |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | Yes | **No** |
| Update frequency | Every 2 weeks | **Every 3 days** |
| Size | 11 MB | 9 MB |
| Requires iOS | 17.6 | **17.0** |
| Devices | iPhone, iPad | **iPhone, iPad, Mac** |
| Age rating | 12+ | 12+ |
| Developer | [AKIRA SASAKI](https://appshunter.io/developer/1831157554) | [明 董](https://appshunter.io/developer/6804537995) |

## What reviewers say

### MonstrumAI

[App page](https://appshunter.io/ios/app/monstrumai/id6758365825)

**Features:** macOS Compatibility

**In-app purchases:** none


### NyxAstra

[App page](https://appshunter.io/ios/app/nyxastra/id6804567608)

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is MonstrumAI free?

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

### Is NyxAstra free?

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

### Do MonstrumAI or NyxAstra have ads?

MonstrumAI shows ads; NyxAstra does not.

### Which is updated more often, MonstrumAI or NyxAstra?

MonstrumAI ships an update every 2 weeks, and NyxAstra every 3 days. Most recently, MonstrumAI was updated on October 29, 2026 and NyxAstra on October 29, 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.*