# J.Sugarの音感トレーニング

> J.Sugarの音感トレーニング (iPhone/iPad app by SATO JIN.)

- Source: https://appshunter.io/ios/app/jsugar/id6777597121 (this page in markdown: same URL + `.md`)
- Developer: [SATO JIN](https://appshunter.io/developer/6777597123)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 6 MB
- Languages: American English, Japanese
- Released: 2026-06-16
- Data updated: 2026-10-17

## What is J.Sugarの音感トレーニング?

Listen to two notes, tell them apart, and find them on the keyboard.

J.Sugar Ear Training is an ear-training app where you listen to two notes and identify them using a piano keyboard.

Start with Trial Play and try the actual note-identification training as many times as you like for free.

Absolute pitch is the ability to identify a single note without a reference tone, while relative pitch is the ability to recognize pitch relationships between notes. In this app, you train relative pitch by listening to two notes and answering directly on the keyboard.

By turning off the BGM, you can reduce the clues provided by accompaniment and focus more directly on the notes themselves, making the app useful for absolute-pitch training as well.

■ Try it free

Even before unlocking any fixed notes, Trial Play lets you experience the actual keyboard-based training for free as many times as you like.

Trial Play gives you 30 seconds of practice with fixed note C, Level 1, white keys only, and a C3–C4 range.

Your score is displayed, but Trial Play does not award coins, save results, or count toward unlock progress.

■ Unlock fixed notes and progress step by step

In normal play, you begin by practicing with the second note fixed to a specific pitch.

A fixed note is a reference note that keeps the second note the same in every question. Starting with a fixed note makes it easier to understand the relationship between the two notes.

You can select fixed notes directly in the unlock dialog and see the required number of coins and purchase price before unlocking them.

Use coins to unlock fixed notes one by one. You can also earn coins based on your score in normal play.

Once all 12 notes are unlocked, you can practice with no fixed note. In this mode, the second note is also randomized, allowing you to take on more challenging listening exercises.

■ Practice with settings that suit you

・Set the keyboard range freely and choose the pitch range you want to practice  
・Choose white keys only, black keys only, or both white and black keys  
・Select a difficulty level from 1 to 6  
・Fix the interval between the two notes for focused practice  
・Set a fixed note and practice using a specific pitch as your reference  
・Use the Carry Over feature to continue from your previous level  

By combining different settings, you can focus on weak pitch ranges or conditions, or increase the difficulty of areas you are already comfortable with.

■ Track your results and identify strengths and weaknesses

Your results from normal play are recorded and analyzed so you can see where you are strong and where you need more practice.

With Review Premium, you can use weakness rankings, recommended review sessions, and performance breakdown analysis. You can also compare your own incorrect answers with the correct answers in both the current game’s mistake list and your review history, helping you practice weak areas more efficiently.

Whether you want to improve your ability to distinguish pitches, add ear training to your instrument or vocal practice, or develop your musical skills, you can train at a level and pace that match your goals.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Review Premium | $5.99 | one-time |
| 1000コイン | $0.99 | one-time |
| 5000コイン | $2.99 | one-time |
| 12000コイン | $5.99 | one-time |
| 2000コイン | $1.99 | one-time |


## Is J.Sugarの音感トレーニング safe?

Not enough ratings yet to assess J.Sugarの音感トレーニング.

## Is J.Sugarの音感トレーニング legit?

J.Sugarの音感トレーニング has limited verification signals. The AppsHunter Legitimacy Score for J.Sugarの音感トレーニング is 58 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.7 — 2026-09-12

- Added support for switching the app display between Japanese and English.
- Added English localization across the entire app, including Settings, Stats, Keyboard, Help, and various modals.
- Added a global `AUTO / JP / EN` language selector at the top of the screen.
- Improved the placement of the language selector and coin balance so they no longer overlap, even when the coin count becomes large.
- Improved layouts in English to prevent clipped text and awkward line breaks.
- Expanded English support on the Stats screen, including aggregation periods, conditions, weakness analysis, heatmaps, and history.
- Updated aggregation labels to clearer wording such as “Per Game.”
- Revised the Review Premium description to better explain recommended review, weakness analysis, and comparing your incorrect answers with the correct answers in both the current mistake list and review history.
- Moved the Free Trial button from the keyboard itself to the control area and redesigned it to better match the standard play controls.
- Fixed an issue where the keyboard and other controls could extend off-screen in landscape mode on iPhone.
- Adjusted keyboard, control, language, and coin layouts for both portrait and landscape orientations on iPhone and iPad.
- Updated the fixed-note unlock flow so that unlocking a fixed note from Settings no longer unexpectedly navigates to the Keyboard screen.

### 1.6 — 2026-09-10

固定音の選択・開放まわりの操作を改善しました。
・通常プレイ時やお試しプレイ終了後に、固定音をモーダル上で直接選択できるようになりました。
・固定音の意味が分かりやすいよう、説明を追加しました。
・固定音開放に必要なコイン数に加えて、StoreKitから取得した実際の購入価格を確認できるようになりました。
・コイン購入後は、購入前に選んでいた固定音の状態へ戻るよう改善しました。
・「解禁」「開放」の表記を「開放」に統一しました。
・iPadで「お試しプレイ」ボタンが鍵盤に重なることがある表示崩れを修正しました。
・出題時、同じ2音の組み合わせが順序を入れ替えただけで短時間に繰り返されにくくなるよう改善しました。
・購入や画面遷移まわりの操作性と安定性を改善しました。
・プレビューのスクリーンショットをいくつか最新のものに差し替えました。

### 1.5 — 2026-09-01

無料の「お試しプレイ」を追加しました。

固定音を開放する前でも、実際の鍵盤を使った音当てトレーニングを無料で何度でも体験できます。

お試しプレイでは、固定音C・Lv1・白鍵のみ・C3〜C4の条件で30秒間プレイできます。
※お試しプレイではコインの獲得・成績の保存・開放進捗への反映はありません。

あわせて、使いやすさの改善と軽微な調整を行いました。

### 1.4 — 2026-08-28

プロモーション用テキストを新たに追加しました。
概要欄の説明がわかりづらかったので、改善しました。

### 1.3 — 2026-08-17

復習モード未開放であったにもかかわらず、復習モードのトグルがONになっていたので、修正した。
また、その横に「未開放」の文字が出てしまっていたので消去した。
プレビューに添付した動画の画質が荒かったので改善し、動画内の表示を一部改善した。

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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 2026-10-17.*