# Hearing PRO vs 吸音材ナビ 残響・RT60測定

The clearest difference is price: 吸音材ナビ 残響・RT60測定 at Free against Hearing PRO's $1.99. 吸音材ナビ 残響・RT60測定 also leads on update cadence (monthly vs every 32 months). Hearing PRO's advantage is in-app purchases (none vs 1) and device support (3 vs 1). On ads there is nothing between them.

吸音材ナビ 残響・RT60測定 is free to download; Hearing PRO costs $1.99 up front. 吸音材ナビ 残響・RT60測定 sells 1 one-off in-app purchase. Hearing PRO asks for nothing beyond the download.

Hearing PRO ships an update every 32 months, 吸音材ナビ 残響・RT60測定 monthly. The most recent releases landed on September 17, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | Hearing PRO | 吸音材ナビ 残響・RT60測定 |
| --- | --- | --- |
| Price | $1.99 | **Free** |
| Rating | **[3.9 (21 ratings)](https://appshunter.io/ios/app/hearing-proear-trainingnotes/id1485053382/reviews)** | — |
| Number of ratings | **21** | — |
| Positive reviews | 21.1% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 32 months | **Monthly** |
| Monetization | Free | — |
| Size | 68 MB | 2 MB |
| Requires iOS | **12.0** | 18.0 |
| Devices | **iPhone, iPad, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Dmitry Zaika](https://appshunter.io/developer/1326165516) | [Shuhei Yamamoto](https://appshunter.io/developer/1896725589) |

## What reviewers say

### Hearing PRO

[App page](https://appshunter.io/ios/app/hearing-proear-trainingnotes/id1485053382)

Develop your musical ear with a variety of exercises. Practice melodic dictations, learn to read music notes, and train your vocal pitch. Supports multiple instruments and musical notation systems.

**Highlights:** Melodic dictation practice, Music note reading training, Vocal pitch training, Supports multiple instruments, Multiple musical notation systems

**Features:** macOS Compatibility

**In-app purchases:** none


### 吸音材ナビ 残響・RT60測定

[App page](https://appshunter.io/ios/app/rt60/id6787505910)

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro（買い切り） | $9.99 | one-time |


## Frequently asked questions

### Is Hearing PRO free?

Hearing PRO costs $1.99, with no in-app purchases.

### Is 吸音材ナビ 残響・RT60測定 free?

吸音材ナビ 残響・RT60測定 is free to download, with in-app purchases available.

### Do Hearing PRO or 吸音材ナビ 残響・RT60測定 have ads?

Neither Hearing PRO nor 吸音材ナビ 残響・RT60測定 shows ads.

### Which is updated more often, Hearing PRO or 吸音材ナビ 残響・RT60測定?

Hearing PRO ships an update every 32 months, and 吸音材ナビ 残響・RT60測定 monthly. Most recently, Hearing PRO was updated on September 17, 2026 and 吸音材ナビ 残響・RT60測定 on September 18, 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.*