# DSI vs AUDIIO

The clearest difference is review sentiment: DSI at 57% against AUDIIO's 0%. DSI also leads on in-app purchases (none vs 1) and ads (none vs shown). AUDIIO's advantage is rating (4.3 vs 3.8) and ratings volume (97 vs 8). On price and device support there is nothing between them.

Both are free to download. AUDIIO sells 1 one-off in-app purchase. DSI asks for nothing beyond the download.

AUDIIO holds the better App Store score, 4.3 against 3.8. That said, the two scores are not equally well evidenced: AUDIIO has 97 ratings behind it against 8, so its average is the more settled of the two. Written reviews complicate that: 57% of DSI's written reviews are positive against 0% of AUDIIO's, so the app with the better star average is not the one people write more warmly about.

DSI ships an update every 7 months, AUDIIO every 3 months. The most recent releases landed on October 24, 2026 and October 26, 2026 respectively.

## The numbers

| Metric | DSI | AUDIIO |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.8 (8 ratings)](https://appshunter.io/ios/app/dsi-2/id1379793450/reviews) | **[4.3 (97 ratings)](https://appshunter.io/ios/app/audiio-rta-analyzer/id1466746908/reviews)** |
| Number of ratings | 8 | **97** |
| Positive reviews | **57.1% of reviews** | 0.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 7 months | **Every 3 months** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 38 MB | 14 MB |
| Requires iOS | **8.0** | 15.6 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [DD Audio](https://appshunter.io/developer/599474306) | [BetaMatters](https://appshunter.io/developer/1437603523) |

## What reviewers say

### DSI

[App page](https://appshunter.io/ios/app/dsi-2/id1379793450)

This app provides comprehensive tools to fine-tune your car audio system with a digital signal processor. It offers a straightforward interface for adjusting equalization, phase, crossover, and time alignment for optimal sound.

**Highlights:** Bluetooth 4.0 compatible, 6 customizable presets, 10-band parametric EQ per channel, Phase correction, Crossover adjustments, Time alignment, Input summing and linking

**Features:** macOS Compatibility

**In-app purchases:** none


### AUDIIO

[App page](https://appshunter.io/ios/app/audiio-rta-analyzer/id1466746908)

Visualize audio in real-time with various data graphs like RTA Bar, FFT, and Spectrogram. Offers full octave and 1/3 octave analysis with linear or logarithmic scales. Displays peak and current dB data in a sleek, functional interface.

**Highlights:** Real-time audio analysis, RTA Bar / Line Graph, FFT and Spectrogram visualization, Full Octave and 1/3 Octave analysis, Linear / Logarithmic scale, Peak and current dB data

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| No Ads | $4.99 | one-time |


## Frequently asked questions

### Is DSI free?

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

### Is AUDIIO free?

AUDIIO is free to download, with in-app purchases available.

### Which has better reviews, DSI or AUDIIO?

AUDIIO is rated higher. DSI averages 3.8 out of 5 from 8 ratings, while AUDIIO averages 4.3 from 97 ratings.

### Do DSI or AUDIIO have ads?

AUDIIO shows ads; DSI does not.

### Which is updated more often, DSI or AUDIIO?

DSI ships an update every 7 months, and AUDIIO every 3 months. Most recently, DSI was updated on October 24, 2026 and AUDIIO on October 26, 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.*