# Chord Sense Trainer — Connecting "Sound" and "Name"

> App for recognizing musical chords by ear through quiz-style training. (iPhone/iPad app by Ruku Kobayashi.)

- Source: https://appshunter.io/ios/app/chord-sense-trainer/id6466735897 (this page in markdown: same URL + `.md`)
- Developer: [Ruku Kobayashi](https://appshunter.io/developer/1707735136)
- Category: Games, Education, Music, Trivia
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 26.0 · 25 MB
- Languages: American English, Japanese
- Released: 2023-10-03
- Data updated: 2026-08-19
- Monetization: freemium
- User reviews in markdown: https://appshunter.io/ios/app/chord-sense-trainer/id6466735897/reviews.md

## What is Chord Sense Trainer?

“Even when I hear a chord, I can’t tell what it is...”

This app is made for anyone who wants to recognize chords by ear.

【Features】
- 2–4 choice quiz-style gameplay
- Start with simple chords and step up as you play
- Custom Mode for personalized training *
- Customizable theme colors
- Dark Mode support

* This feature requires the Premium version.


For subscription terms and policies, see below.
- Privacy Policy : https://dualukegg.wixsite.com/my-app-gallery-l
- Terms of Use : https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

~~~~~~~~~~~~~~~~~~~~~~~

Train your chord sense anytime, right from your smartphone or tablet!

Chord sense—the ability to recognize the sound of chords—can be useful for many musical activities, including transcribing songs by ear and composing music.

Whether you’re commuting or unable to play an instrument because of noise concerns, you can easily practice chord recognition anytime.

## Key features

- Quiz-style chord recognition
- Progressive difficulty levels
- Custom training mode
- Theme and dark mode customization
- Mobile practice for musicians

## Pricing and in-app purchases

Base price: Free.

**Subscriptions**

| Subscription | Price | Period |
| --- | --- | --- |
| Premium Plan (Monthly) | $0.49 | per month |

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium Plan (Lifetime) | $1.99 | one-time |
| Gift for dinner | $5.99 | one-time |
| Gift sweets | $0.49 | one-time |
| Gift coffee | $2.99 | one-time |


## Recent user reviews (1 of 1)

All indexed reviews: https://appshunter.io/ios/app/chord-sense-trainer/id6466735897/reviews.md

### 5/5 — 楽しく学べる

*2024-06-30*

音楽理論の勉強に疲れた時にこのアプリをやると和音のもつイメージや美しさを感じてとても良い気分転換になります。プレミアム購入しました！応援してます！

**Developer response:** この度は素敵なレビューをお寄せいただき、またプレミアム版を購入していただき、誠にありがとうございます！
星のしんぼ様にとって価値のあるアプリとなれていることを大変嬉しく思います。
使いやすく、楽しめるアプリを目指して現在も開発に取り組んでおり、近日アップデートを予定しております。
これからもどうぞよろしくお願いいたします。

## Frequently asked questions about Chord Sense Trainer

### What is Chord Sense Trainer?

Chord Sense Trainer is a mobile application designed to help users develop their ability to recognize musical chords by ear. It uses quiz-style gameplay to train users, starting with simple chords and progressing to more complex ones.

### How does Chord Sense Trainer help with music?

Improving chord recognition by ear is beneficial for various musical activities, such as transcribing songs and composing music. This app allows for convenient practice on smartphones and tablets, making it accessible during commutes or when quiet practice is needed.

### What are the gameplay modes in Chord Sense Trainer?

Chord Sense Trainer features a quiz-style gameplay with 2-4 choices. It also offers a Custom Mode for personalized training, which requires the Premium version of the app.

### Can I customize the appearance of Chord Sense Trainer?

Yes, the app allows for customizable theme colors and supports Dark Mode. This helps personalize the user experience and can make extended practice sessions more comfortable.

### What is the pricing for Chord Sense Trainer?

Chord Sense Trainer is free to download and use. It offers a Premium Plan subscription for $0.49 per month, which unlocks features like the Custom Mode.

### What devices is Chord Sense Trainer available on?

Chord Sense Trainer is available on iPhones and iPads, supporting a wide range of Apple mobile devices.

### How often is Chord Sense Trainer updated?

The latest version of Chord Sense Trainer is 6.0.0, last updated on May 29, 2026. This indicates a commitment to ongoing development and improvements.

### Does Chord Sense Trainer have ads?

No, Chord Sense Trainer does not contain advertisements. The app is free to download and offers optional in-app purchases for premium features.

## Version history (last 5 releases)

### 6.0.0 — 2026-05-29

This update brings a major redesign to the app and makes the gameplay even more enjoyable!

- Completely revamped the game system
- Refreshed the UI design
- Added new instrument sounds
- Added iCloud support for syncing data across devices
- Added an easy way to share results on social media and other platforms
- Significantly reduced the app size
- Added a monthly Premium Plan
- Fixed bugs

### 5.3.0 — 2025-03-03

- Improved the custom mode to allow free selection of octaves
- Changed the quiz to a life-based system
- Adjusted the appearance rate of specific chords in certain stages
- Improved design and text
- Fixed bugs

### 5.2.0 — 2025-02-17

- Fixed an issue where the app would crash under certain conditions
- Improved design

### 5.1.0 — 2024-09-08

- Added various features for a more comfortable app experience
- Design improvements
- Bug fixes

### 5.0.0 — 2024-07-08

- Added new stages
- Made significant changes to stage structure and appearance
- Added octave change feature in custom mode
- Fixed bugs
- Adjusted colors and layout
- Added minor features to enhance app usability

## More apps by Ruku Kobayashi

- [KeyPalette - Piano Chord&Scale](https://appshunter.io/ios/app/keypalette-piano-chord-and-scale/id6471105648)
- [Piano Chord Guide: Chord Game](https://appshunter.io/ios/app/piano-chord-guide-chord-game/id6475755652)
- [Piano Note Reading Trainer](https://appshunter.io/ios/app/piano-note-reading-trainer/id6478444762)
- [Randient](https://appshunter.io/ios/app/randient/id6747883962)
- [Merge Puzzle Assort: 2048](https://appshunter.io/ios/app/merge-puzzle-assort-2048/id6749580902)

All apps by Ruku Kobayashi: https://appshunter.io/developer/1707735136

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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 2026-08-19.*