# RTA vs Plus Audio MPS

The clearest difference is price: Plus Audio MPS at Free against RTA's $4.99. Plus Audio MPS also leads on in-app purchases (none vs 2) and update cadence (fortnightly vs every 3 months). On ads and device support there is nothing between them.

Plus Audio MPS is free to download; RTA costs $4.99 up front. RTA sells 2 one-off in-app purchases. Plus Audio MPS asks for nothing beyond the download.

RTA ships an update every 3 months, Plus Audio MPS fortnightly. The most recent releases landed on September 24, 2026 and September 8, 2026 respectively.

## The numbers

| Metric | RTA | Plus Audio MPS |
| --- | --- | --- |
| Price | $4.99 | **Free** |
| Rating | **[3.9 (26 ratings)](https://appshunter.io/ios/app/rta/id298839433/reviews)** | — |
| Number of ratings | **26** | — |
| Positive reviews | 60.7% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free with in-app purchases | — |
| Size | 29 MB | 43 MB |
| Requires iOS | 15.0 | **12** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Andrew Smith](https://appshunter.io/developer/291822462) | [Stage Audio Works (PTY) Ltd](https://appshunter.io/developer/1805559664) |

## What reviewers say

### RTA

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

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


### Plus Audio MPS

[App page](https://appshunter.io/ios/app/plus-audio-mps/id6744018104)

**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 Plus Audio MPS free?

Plus Audio MPS is free to download, with no in-app purchases.

### Do RTA or Plus Audio MPS have ads?

Neither RTA nor Plus Audio MPS shows ads.

### Which is updated more often, RTA or Plus Audio MPS?

RTA ships an update every 3 months, and Plus Audio MPS fortnightly. Most recently, RTA was updated on September 24, 2026 and Plus Audio MPS on September 8, 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.*