# オトピア｜ボイトレとピアノコード練習 — 音程を見える化｜音域測定・発声・録音

> 音程を見える化｜音域測定・発声・録音 (iPhone/iPad app by Yamamoto Chihiro.)

- Source: https://appshunter.io/ios/app/id6788701092 (this page in markdown: same URL + `.md`)
- Developer: [Yamamoto Chihiro](https://appshunter.io/developer/6784491911)
- Category: Music, Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English, Japanese
- Released: 2026-07-29
- Data updated: 2026-08-21
- User reviews in markdown: https://appshunter.io/ios/app/id6788701092/reviews.md

## What is オトピア｜ボイトレとピアノコード練習?

Otopia brings focused vocal and piano practice together in one clear app.

VOCAL PRACTICE
■ Real-Time Pitch Monitor
See the note you are singing and whether your pitch is sharp or flat on a
live graph.

■ Long-Tone Practice
Use the waveform, note name, and timer to practice holding a steady voice.

■ Record and Review
Record your singing, play it back immediately, rename takes, and search
your recording list.

■ Vocal Range Check
Measure your lowest and highest notes and see an estimated voice type.

■ Pitch Matching
Listen to a reference note and practice holding the same pitch.

■ Scale Practice
Sing through a scale one note at a time with reference tones.

■ Sing with a Track
Choose an audio file from your device and practice while viewing your
pitch and volume.

PIANO PRACTICE
Explore the main chords in each key with an on-screen keyboard and finger
numbers. Play common progressions, including pop and Canon progressions, or
build and save your own.

PRACTICE HISTORY
Review practice days, vocal range, and long-tone results over time.

Core practice tools are free. Free recordings are limited to six minutes
per take. Premium removes banner ads and unlocks recordings up to 30 minutes,
progress charts, and recording export and sharing.

Recordings, imported audio, and practice history stay on your device.

Terms of Use: https://otopia.netlify.app/en/terms.html
Apple Standard EULA: https://www.apple.com/legal/internet-
services/itunes/dev/stdeula/
Privacy Policy: https://otopia.netlify.app/en/privacy.html

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Monthly | $2.99 | per month |
| Premium Yearly | $24.99 | per year |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium LIfetime | $39.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-07-30

No release notes.

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-21.*