# PX vs CA DSP

The clearest difference is update cadence: PX at fortnightly against CA DSP's every 6 weeks. PX also leads on iOS requirement (9.0 vs 11.0). 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.

PX ships an update fortnightly, CA DSP every 6 weeks. The most recent releases landed on September 16, 2026 and July 7, 2026 respectively.

## The numbers

| Metric | PX | CA DSP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ca-dsp/id1563340670/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Fortnightly** | Every 6 weeks |
| Monetization | — | Free |
| Size | 26 MB | 18 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Zhuhai HiVi Technology Co.,Ltd](https://appshunter.io/developer/1352619575) | [文栋 顾](https://appshunter.io/developer/1460789214) |

## What reviewers say

### PX

[App page](https://appshunter.io/ios/app/px-406/id1352619576)

**Features:** macOS Compatibility

**In-app purchases:** none


### CA DSP

[App page](https://appshunter.io/ios/app/ca-dsp/id1563340670)

This utility app provides comprehensive control over audio settings, including EQ, crossovers, and time alignment. Configure all adjustments and DSP functionality remotely via smartphone, tablet, or PC.

**Highlights:** EQ adjustments, Controllable crossover settings, Digital time alignment, Grouping functionality, Preset and custom memory

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is PX free?

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

### Is CA DSP free?

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

### Do PX or CA DSP have ads?

Neither PX nor CA DSP shows ads.

### Which is updated more often, PX or CA DSP?

PX ships an update fortnightly, and CA DSP every 6 weeks. Most recently, PX was updated on September 16, 2026 and CA DSP on July 7, 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.*