# DSP vs MB Quart MB

The clearest difference is update cadence: MB Quart MB at monthly against DSP's every 9 months. MB Quart MB also leads on iOS requirement (12.2 vs 15.0). 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.

DSP ships an update every 9 months, MB Quart MB monthly. The most recent releases landed on October 19, 2026 and October 9, 2026 respectively.

## The numbers

| Metric | DSP | MB Quart MB |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | **Monthly** |
| Size | 62 MB | 56 MB |
| Requires iOS | 15.0 | **12.2** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Guang Dong Sound Power](https://appshunter.io/developer/1760446092) | [伟 陈](https://appshunter.io/developer/1837176650) |

## What reviewers say

### DSP

[App page](https://appshunter.io/ios/app/dsp-x/id6743121086)

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

**In-app purchases:** none


### MB Quart MB

[App page](https://appshunter.io/ios/app/mb-quart-mb-dsp68/id6756109320)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DSP free?

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

### Is MB Quart MB free?

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

### Do DSP or MB Quart MB have ads?

Neither DSP nor MB Quart MB shows ads.

### Which is updated more often, DSP or MB Quart MB?

DSP ships an update every 9 months, and MB Quart MB monthly. Most recently, DSP was updated on October 19, 2026 and MB Quart MB on October 9, 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.*