# A544DSP vs DSP

The clearest difference is update cadence: A544DSP at every 5 weeks against DSP's every 9 months. A544DSP also leads on iOS requirement (9.0 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.

A544DSP ships an update every 5 weeks, DSP every 9 months. The most recent releases landed on September 30, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | A544DSP | DSP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 9 months |
| Size | 21 MB | 62 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [杏生 卢](https://appshunter.io/developer/1094592555) | [Guang Dong Sound Power](https://appshunter.io/developer/1760446092) |

## What reviewers say

### A544DSP

[App page](https://appshunter.io/ios/app/a544dsp/id1670363148)

**Features:** macOS Compatibility

**In-app purchases:** none


### DSP

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

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

**In-app purchases:** none


## Frequently asked questions

### Is A544DSP free?

A544DSP is free to download, with no in-app purchases.

### Is DSP free?

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

### Do A544DSP or DSP have ads?

Neither A544DSP nor DSP shows ads.

### Which is updated more often, A544DSP or DSP?

A544DSP ships an update every 5 weeks, and DSP every 9 months. Most recently, A544DSP was updated on September 30, 2026 and DSP on October 2, 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.*