# Piano Ear Training Pro vs R+ ENGINEER

The clearest difference is price: R+ ENGINEER at Free against Piano Ear Training Pro's $29.99. R+ ENGINEER also leads on iOS requirement (12.0 vs 15.0). Piano Ear Training Pro's advantage is rating (4.3 vs 1.5) and update cadence (every 2 months vs every 4 months). On ads, in-app purchases and device support there is nothing between them.

R+ ENGINEER is free to download; Piano Ear Training Pro costs $29.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Piano Ear Training Pro holds the better App Store score, 4.3 against 1.5. That said, the two scores are not equally well evidenced: Piano Ear Training Pro has 16 ratings behind it against 2, so its average is the more settled of the two.

Piano Ear Training Pro ships an update every 2 months, R+ ENGINEER every 4 months. The most recent releases landed on October 24, 2026 and October 16, 2026 respectively.

## The numbers

| Metric | Piano Ear Training Pro | R+ ENGINEER |
| --- | --- | --- |
| Price | $29.99 | **Free** |
| Rating | **[4.3 (16 ratings)](https://appshunter.io/ios/app/piano-ear-training-pro/id567966338/reviews)** | [1.5 (2 ratings)](https://appshunter.io/ios/app/r-plus-engineer/id1475713920/reviews) |
| Number of ratings | **16** | 2 |
| Positive reviews | 33.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 4 months |
| Monetization | Paid | **Free** |
| Size | 44 MB | 116 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Learn To Master Ltd](https://appshunter.io/developer/431947334) | [ROBOTIS CO., LTD.](https://appshunter.io/developer/948481761) |

## What reviewers say

### Piano Ear Training Pro

[App page](https://appshunter.io/ios/app/piano-ear-training-pro/id567966338)

Develop your musical ear with comprehensive ear training exercises. Personalize your learning by focusing on specific musical elements and track your progress with intuitive tools. Features include interval, chord, and pitch recognition, designed for all skill levels.

**Highlights:** Personalized training by chords, intervals, scales, Progress tracking, Configurable piano interface, Interval training, Chord distinction, Pitch and melodic dictation

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

**In-app purchases:** none


### R+ ENGINEER

[App page](https://appshunter.io/ios/app/r-plus-engineer/id1475713920)

This application connects to a smart device kit, enabling the use of sensors, video, and audio processing. It offers simple programming to control and manipulate the connected hardware, making it an interactive educational tool.

**Highlights:** Connects to ROBOTIS ENGINEER Kit, Utilizes smart device sensors, Supports video/image processing, Enables audio input/output, Intuitive programming interface, Control and manipulate hardware

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Piano Ear Training Pro free?

Piano Ear Training Pro costs $29.99, with no in-app purchases.

### Is R+ ENGINEER free?

R+ ENGINEER is free to download, with no in-app purchases.

### Which has better reviews, Piano Ear Training Pro or R+ ENGINEER?

Piano Ear Training Pro is rated higher. Piano Ear Training Pro averages 4.3 out of 5 from 16 ratings, while R+ ENGINEER averages 1.5 from 2 ratings.

### Do Piano Ear Training Pro or R+ ENGINEER have ads?

Neither Piano Ear Training Pro nor R+ ENGINEER shows ads.

### Which is updated more often, Piano Ear Training Pro or R+ ENGINEER?

Piano Ear Training Pro ships an update every 2 months, and R+ ENGINEER every 4 months. Most recently, Piano Ear Training Pro was updated on October 24, 2026 and R+ ENGINEER on October 16, 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.*