# DSP vs PCADSP

The clearest difference is update cadence: PCADSP at every 3 months against DSP's every 15 months. 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 15 months, PCADSP every 3 months. The most recent releases landed on October 7, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | DSP | PCADSP |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 15 months | **Every 3 months** |
| Size | 2 MB | 4 MB |
| Requires iOS | 15.6 | **14.0** |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [东山 谢](https://appshunter.io/developer/1634156531) | [Saga Audio Equipment Co., Ltd.](https://appshunter.io/developer/1182856667) |

## What reviewers say

### DSP

[App page](https://appshunter.io/ios/app/dsp-4680-pro/id6479560759)

**Features:** macOS Compatibility

**In-app purchases:** none


### PCADSP

[App page](https://appshunter.io/ios/app/pcadsp/id6504428795)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is DSP free?

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

### Is PCADSP free?

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

### Do DSP or PCADSP have ads?

Neither DSP nor PCADSP shows ads.

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

DSP ships an update every 15 months, and PCADSP every 3 months. Most recently, DSP was updated on October 7, 2026 and PCADSP on October 4, 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.*