# AURA DSP vs PPI

AURA DSP and PPI are too close to call on the numbers: across 5 compared parameters — price, ads, in-app purchases and device support among them — neither pulls far enough ahead to decide it. What separates them is feature set and interface, not measurable difference.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

## The numbers

| Metric | AURA DSP | PPI |
| --- | --- | --- |
| Price | Free | Free |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | — |
| Monetization | Free | — |
| Size | 97 MB | 94 MB |
| Requires iOS | 11.0 | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Alpha Trade Co](https://appshunter.io/developer/1741862543) | [Guangzhou Aidan Blessindo Electronic Co.,Ltd.](https://appshunter.io/developer/1413008258) |

## What reviewers say

### AURA DSP

[App page](https://appshunter.io/ios/app/aura-dsp/id6498873026)

Control and tune your Digital Signal Processing (DSP) system directly from your smartphone or tablet. Adjust audio sources, equalizer settings, volume, and channel configurations with ease.

**Highlights:** Source selection, HPF/LPF adjustment, Master volume control, Channel volume and phase settings, Time delay and GEQ adjustments, EQ reset and restore

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

**In-app purchases:** none


### PPI

[App page](https://appshunter.io/ios/app/ppi-d/id6736673806)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AURA DSP free?

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

### Is PPI free?

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

### Do AURA DSP or PPI have ads?

Neither AURA DSP nor PPI shows ads.

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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.*