# AUDIIO vs RDTap

The clearest difference is review sentiment: RDTap at 50% against AUDIIO's 0%. RDTap also leads on in-app purchases (none vs 1) and ads (none vs shown). AUDIIO's advantage is rating (4.3 vs 2.0) and ratings volume (96 vs 1). On price, device support and iOS requirement there is nothing between them.

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

AUDIIO holds the better App Store score, 4.3 against 2.0. That said, the two scores are not equally well evidenced: AUDIIO has 96 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 0% of AUDIIO's written reviews are positive against 50% of RDTap's, so the app with the better star average is not the one people write more warmly about.

AUDIIO ships an update every 3 months, RDTap fortnightly. The most recent releases landed on October 24, 2026 and October 21, 2026 respectively.

## The numbers

| Metric | AUDIIO | RDTap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.3 (96 ratings)](https://appshunter.io/ios/app/audiio-rta-analyzer/id1466746908/reviews)** | [2.0 (1 ratings)](https://appshunter.io/ios/app/rdtap/id6739501408/reviews) |
| Number of ratings | **96** | 1 |
| Positive reviews | 0.0% of reviews | **50.0% of reviews** |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 14 MB | 36 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [BetaMatters](https://appshunter.io/developer/1437603523) | [RCF spa](https://appshunter.io/developer/1053268033) |

## What reviewers say

### 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 |


### RDTap

[App page](https://appshunter.io/ios/app/rdtap/id6739501408)

Control and configure SUB 90XX series subwoofers with access to internal parameters. Offers professionally tuned presets for seamless integration with top speakers and supports rapid setup for ground stacking or sub cluster configurations.

**Highlights:** Access internal subwoofer parameters, Advanced Crossover Engine (ACE) presets, Professionally tuned level and phase matching, Ground stacking and sub cluster configuration, Rapid setup for speaker designs

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is AUDIIO free?

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

### Is RDTap free?

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

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

AUDIIO is rated higher. AUDIIO averages 4.3 out of 5 from 96 ratings, while RDTap averages 2.0 from 1 ratings.

### Do AUDIIO or RDTap have ads?

AUDIIO shows ads; RDTap does not.

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

AUDIIO ships an update every 3 months, and RDTap fortnightly. Most recently, AUDIIO was updated on October 24, 2026 and RDTap on October 21, 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.*