# DSPSystem vs MU

The clearest difference is update cadence: MU at every 3 days against DSPSystem's every 5 months. MU also leads on iOS requirement (9.0 vs 13.0). 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.

DSPSystem ships an update every 5 months, MU every 3 days. The most recent releases landed on September 12, 2026 and August 23, 2026 respectively.

## The numbers

| Metric | DSPSystem | MU |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 days** |
| Size | 93 MB | 17 MB |
| Requires iOS | 13.0 | **9.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [星忠 宁](https://appshunter.io/developer/1446136891) | [浩明 甄](https://appshunter.io/developer/6779027894) |

## What reviewers say

### DSPSystem

[App page](https://appshunter.io/ios/app/dspsystem/id6478640424)

**In-app purchases:** none


### MU

[App page](https://appshunter.io/ios/app/mu-22/id6786191145)

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

**In-app purchases:** none


## Frequently asked questions

### Is DSPSystem free?

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

### Is MU free?

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

### Do DSPSystem or MU have ads?

Neither DSPSystem nor MU shows ads.

### Which is updated more often, DSPSystem or MU?

DSPSystem ships an update every 5 months, and MU every 3 days. Most recently, DSPSystem was updated on September 12, 2026 and MU on August 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.*