# RTA vs iAudioTool

The clearest difference is rating: RTA at 3.9 against iAudioTool's 3.3. RTA also leads on review sentiment (61% vs 34%) and chart position (#134 vs unranked). iAudioTool's advantage is in-app purchases (none vs 2) and update cadence (every 2 months vs every 3 months). On ratings volume, ads, device support and iOS requirement there is nothing between them.

RTA costs $4.99 and iAudioTool $2.99 up front. RTA sells 2 one-off in-app purchases. iAudioTool asks for nothing beyond the download.

RTA holds the better App Store score, 3.9 against 3.3. Both are backed by a comparable volume of ratings — 26 and 13 respectively. Written reviews point the same way: 61% of RTA's written reviews are positive against 34% of iAudioTool's.

RTA ships an update every 3 months, iAudioTool every 2 months. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | RTA | iAudioTool |
| --- | --- | --- |
| Price | $4.99 | **$2.99** |
| Rating | **[3.9 (26 ratings)](https://appshunter.io/ios/app/rta/id298839433/reviews)** | [3.3 (13 ratings)](https://appshunter.io/ios/app/iaudiotool/id580740399/reviews) |
| Number of ratings | **26** | 13 |
| Positive reviews | **60.7% of reviews** | 34.5% of reviews |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Free with in-app purchases** | Paid |
| Best chart rank | **#134** | — |
| Size | 29 MB | 1 MB |
| Requires iOS | **15.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [Julian Bunn](https://appshunter.io/developer/580740402) |

## What reviewers say

### RTA

[App page](https://appshunter.io/ios/app/rta/id298839433)

**Currently charting:** #134 Top Paid · Music (US App Store)

Analyze audio frequencies, test speakers, and tune rooms with this professional-grade acoustical analysis tool. It offers octave and 1/3 octave modes, peak hold, and averaging, with automatic microphone compensation for accurate results.

**Highlights:** Real-time acoustical analysis, Octave and 1/3 Octave modes, Peak Hold and Average modes, Automatic microphone compensation, Save, recall, and export graphs, Interactive touch GUI, Noise curve overlays

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| STC -- Transmission Loss | $9.99 | one-time |
| Reference Curve Files | $9.99 | one-time |

**What reviewers like**

- 👍 Easy to use
- 👍 Good for quick analysis
- 👍 Accurate for price
- 👍 Useful for tuning
- 👍 Professional tool

**What reviewers complain about**

- 🐛 Crashes frequently
- 🐛 Freezes often
- 🐛 Incompatible with iOS updates
- 🐛 Screen display issues
- 🐛 Battery drain

**Reported bugs**

- App crashes after iOS updates (iOS 13, 15, 16, 17, 18)
- App freezes or crashes on startup
- App only displays half the screen
- App does not save analysis readings to photo roll
- App stops working on older iPads after updates

**Requested features**

- Add German language support
- Add NC and NR curves
- Make background mode optional
- Improve compatibility with newer iOS versions
- Add option to overlay readings


### iAudioTool

[App page](https://appshunter.io/ios/app/iaudiotool/id580740399)

This app provides advanced audio analysis tools for professionals and enthusiasts. It includes features like RT60, SPL metering, spectrum analysis, and signal generation to help you understand and optimize sound environments. Calibration features ensure accurate measurements for various audio applications.

**Highlights:** RT60 measurement, SPL meter, Spectrum analyzer, Signal generator, Polarity checker, ISO Octave Calibration

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

**In-app purchases:** none


## Frequently asked questions

### Is RTA free?

RTA costs $4.99, and also offers in-app purchases.

### Is iAudioTool free?

iAudioTool costs $2.99, with no in-app purchases.

### Which has better reviews, RTA or iAudioTool?

RTA is rated higher. RTA averages 3.9 out of 5 from 26 ratings, while iAudioTool averages 3.3 from 13 ratings.

### Do RTA or iAudioTool have ads?

Neither RTA nor iAudioTool shows ads.

### Which is updated more often, RTA or iAudioTool?

RTA ships an update every 3 months, and iAudioTool every 2 months. Most recently, RTA was updated on October 17, 2026 and iAudioTool on October 15, 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.*