AUDIIO vs RDTap
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
AUDIIO
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.
- 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
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Audiio is a real-time audio analyzer app. - Visualize audio in various data graph (RTA Bar / Line Graph, FFT, Spectrogram) - Full Octave, 1/3 Available - Linear / Logarithm scale at your disposal - Peak dB data / current dB data - Sleek UI (Functional & Elegant)
RDTap
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.
- 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
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RDTap is dedicated to the SUB 90XX family of touring subwoofers (https://www.rcf.it/en/sub-9000-series), providing full access to their internal parameters. Several presets are available for their internal Advanced Crossover Engine (ACE), offering a professionally tuned match, both in level and phase, between the subwoofer itself and a selection of top speakers. In addition, a Ground Stacking or Sub Cluster combination of up to 3 subwoofers and one or more top speakers (defined as Design) can be rapidly defined and configured, with simple programming steps.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | AUDIIO | RDTap |
|---|---|---|
| Price | Free | Free |
| Rating | 4.3 (96 ratings) — better | 2.0 (1 ratings) |
| Positive reviews | 0.0% of reviews | 50.0% of reviews — better |
| Number of ratings | 96 — better | 1 |
| Update frequency | Every 3 months | Fortnightly — better |
| Ads | Yes | No — better |
| In-app purchases | Yes | No — better |
| Monetization | Free with in-app purchases | Free — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 15.6 | 15.0 — better |
| Further details — not scored | ||
| Size | 14 MB | 36 MB |
| Age rating | 4+ | 4+ |
| Developer | BetaMatters | RCF spa |
Customer experience
AUDIIO
RDTap
In-app purchases
AUDIIO
- No Ads$4.99
RDTap
No in-app purchases
