# RTA Audio vs RDTap

The clearest difference is in-app purchases: RDTap at none against RTA Audio's 1. RDTap also leads on update cadence (fortnightly vs every 28 months). RTA Audio's advantage is review sentiment (59% vs 50%). On price, ads, device support and iOS requirement there is nothing between them.

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

RTA Audio ships an update every 28 months, RDTap fortnightly. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | RTA Audio | RDTap |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.6 (31 ratings)](https://appshunter.io/ios/app/rta-audio/id525324684/reviews)** | — |
| Number of ratings | **31** | — |
| Positive reviews | **58.5% of reviews** | 50.0% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 28 months | **Fortnightly** |
| Monetization | Free with in-app purchases | **Free** |
| Size | 2 MB | 36 MB |
| Requires iOS | 15.6 | **15.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [New Ball s.r.o.](https://appshunter.io/developer/1178970340) | [RCF spa](https://appshunter.io/developer/1053268033) |

## What reviewers say

### RTA Audio

[App page](https://appshunter.io/ios/app/rta-audio/id525324684)

Analyze audio in real-time with detailed frequency spectrum and waveform visualizations. Record and export your audio analysis results, including spectrograms and frequency tables, for sharing or archiving.

**Highlights:** Real-time audio analysis (FFT), Recording and offline processing, Spectrogram and waveform visualization, Exportable analysis reports (PDF), Adjustable resolution and frequency scale, Peak and RMS metering

**Features:** Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Upgrade to full version | $14.99 | 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 RTA Audio free?

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

### Is RDTap free?

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

### Do RTA Audio or RDTap have ads?

Neither RTA Audio nor RDTap shows ads.

### Which is updated more often, RTA Audio or RDTap?

RTA Audio ships an update every 28 months, and RDTap fortnightly. Most recently, RTA Audio was updated on October 15, 2026 and RDTap on October 4, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*