# Dr.Chord -Discover cool chord. — Get a professional progression > Music app for developing tonality and understanding chord progressions. (iPhone/iPad app by KOTO CO., LTD..) - Source: https://appshunter.io/ios/app/drchord-discover-cool-chord/id1543151371 (this page in markdown: same URL + `.md`) - Developer: [KOTO CO., LTD.](https://appshunter.io/developer/402630529) - Category: Music, Music, Education - Price: Free - Rating: 4.00/5 from 8 App Store ratings · 20 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 286 MB - Languages: English, Japanese - Released: 2020-12-15 - Data updated: 2026-07-05 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/drchord-discover-cool-chord/id1543151371/reviews.md ## What is Dr.Chord? 'Dr.Chord' is the app to assist users to develop their sense of tonality. While singing a tune, users can test the sound of each chord progression just by clicking each chord button on the screen. The app aims to make users acquire more advanced skills as they reproduce the tune they are familiar with. [Sound of each chord] Users will be able to recall the sounds such as Maj7, m7, 7th, sus4, dim, aug etc. just by looking at each chord name. [The function of a chord in a chord progression or in tunes] Users will be able to recall the sound just by looking at the degree name of each chord. [Patterned chord progression] Users will be able to re-harmonize the tune. ## Key features - Test chord progressions - Reproduce familiar tunes - Recall chord sounds (Maj7, m7, etc.) - Understand chord function by degree - Re-harmonize tunes ## Recent user reviews (10 of 20) All indexed reviews: https://appshunter.io/ios/app/drchord-discover-cool-chord/id1543151371/reviews.md ### 5/5 — I love this app *2026-01-24* No more to say,it just wonderful.It really helped me in composing studies! ### 5/5 — めっちゃいい *2025-10-31, version 2.2* コード進行を作ってて意図せず押してしまったコードが見事にハマってびっくりしました。こういった、このアプリならではの気づきや学びがあって面白いです。 これからも宜しくお願いします。開発頑張ってください！ ### 5/5 — Amazing App! Thank you so much! *2025-06-27* This is such a helpful tool for a musician like me. I appreciate how the app creator organized everything seamlessly and presented the chords in a most useful and relevant way according to how the sounds feel and come together. I also love the reason why this app was created: to help other musicians discover effective ways to create great music. Thank you very much! ### 4/5 — 楽器の種類も音質も良い····· *2024-12-18, version 2.2* medlyのような作曲アプリだったら満点だった····· ### 5/5 — Cool app *2024-07-01* I’m really enjoying this app ### 2/5 — Instructions in English, please! UPDATE *2024-03-13* Oh so very close. Help screen pops up - then disappears behind an error message. Please fix - and add MIDI please. This appears to be a very nice and useful app but the tutorial is in Japanese. A tutorial in English would be very helpful. Also, MIDI support would be a serious plus. Downgraded to 2 stars for dev’s failure to respond in timely fashion. **Developer response:** Hi!, English tutorial released in v2.2. Enjoy!!! ### 5/5 — ほんまに感謝 *2023-12-12, version 2.2* ピアノは少しかじってたけどコードで挫折したから勉強になる シンプルでめちゃくちゃわかりやすい こういうのを求めてた…！まじでありがとう ### 4/5 — 保存と録音 *2023-12-02, version 2.2* 作成したコードの流れを保存できたり、タップして録音できるといいかなと。 ### 5/5 — Cool app *2023-07-03* Nice work on this app ### 5/5 — いい。 *2023-05-06, version 2.2* 自分の欲しいものが手に入った気分。 なかなか上手くコード進行を組めなくてずっと苦労してました。 本当にありがたいです。 もし自分の意見をとうしていただけたりカスタマイズ等々出来るのであれば有償でも良いです。 ## Frequently asked questions about Dr.Chord ### What is Dr.Chord used for? Dr.Chord is used to help users develop their sense of tonality and understand chord progressions. You can test the sound of different chord progressions and learn to recall chord sounds and their functions. ### What types of chords can I explore in Dr.Chord? Dr.Chord allows you to explore various chord types such as Maj7, m7, 7th, sus4, and dim/aug chords. You can recall their sounds simply by looking at their names. ### Can Dr.Chord help me re-harmonize songs? Yes, Dr.Chord includes a 'Patterned chord progression' feature that enables users to re-harmonize tunes. This helps in understanding how different chord sequences affect a melody. ### What is the user sentiment for Dr.Chord? Based on the available data, Dr.Chord has a rating of 4.0 stars from 8 ratings, indicating generally positive user sentiment. ### Is Dr.Chord free to download? Yes, Dr.Chord is available for free download. It also includes ads. ### On which devices can I use Dr.Chord? Dr.Chord is supported on iPhone, iPad, and iPod devices. ### How often is Dr.Chord updated? The latest version of Dr.Chord is 2.2, and it was last updated on April 18, 2023. This suggests regular updates from the developer. ### What is the age rating for Dr.Chord? Dr.Chord has an age rating of 4+, making it suitable for a wide range of users interested in music. ## Version history (last 5 releases) ### 2.2 — 2023-04-18 [v2.2] - The English version of "Tutorial" and "How to use" has been released. - The key selection screen has been changed to the 5th circle display. You can also return to the conventional list display from the setting screen. - I moved the instrument selection to the setting screen, and changed it so that the top note setting can be opened from the icon on the upper left instead. ### 2.1.1 — 2023-01-27 [v2.1.1] - Some minor fixes. [v2.1] - Supported some on-codes! ! It is now possible to play with "/ Ⅰ", "/ Ⅳ" and "/ Ⅴ". These three types alone can cover many cases. - Changed to close the screen at the same time as selecting a key on the key selection screen. - Changed to display the minor key name next to the major key name display. ### 2.1 — 2023-01-13 - Supported some on-codes! ! It is now possible to play with "/ Ⅰ", "/ Ⅳ" and "/ Ⅴ". These three types alone can cover many cases. - Changed to close the screen at the same time as selecting a key on the key selection screen. - Changed to display the minor key name next to the major key name display. ### 2.0.1 — 2022-04-19 v2.0.1 - Minor corrections. v2.0 - The name of the app has been changed to 'Dr.Chord'. - The 9th tension is now supported. - Chords have been rearranged based on their frequency of use while emotion taste is emphasized with intense colors. - When users press a chord button and hear the corresponding sound, users can see the actual keys being pressed on the virtual keyboard shown on the screen. ### 2.0 — 2022-04-18 The following are the changes that have been made in v2.0. - The name of the app has been changed to 'Dr.Chord'. - The 9th tension is now supported. - Chords have been rearranged based on their frequency of use while emotion taste is emphasized with intense colors. - When users press a chord button and hear the corresponding sound, users can see the actual keys being pressed on the virtual keyboard shown on the screen. ## Apps similar to Dr.Chord | App | Rating | Price | Category | | --- | --- | --- | --- | | [AI Chord Finder: Guitar Tabs](https://appshunter.io/ios/app/ai-chord-finder-guitar-tabs/id6462842110) | 4.6 (85) | Free | Music | | [MyChord - Music Chord Finder](https://appshunter.io/ios/app/mychord-music-chord-finder/id1473452974) | 3.6 (23) | Free | Music | | [Chord Memos](https://appshunter.io/ios/app/chord-memos/id1479015907) | 5.0 (4) | Free | Music | | [Humming Score](https://appshunter.io/ios/app/humming-score/id1642927502) | 2.7 (7) | Free | Music | | [Chord Sheet Writer](https://appshunter.io/ios/app/chord-sheet-writer/id1579397632) | 2.3 (3) | Free | Music | ## More apps by KOTO CO., LTD. - [発音博士](https://appshunter.io/ios/app/id885771578) - [Occlu-pad Tangible](https://appshunter.io/ios/app/occlu-pad-tangible/id980489530) All apps by KOTO CO., LTD.: https://appshunter.io/developer/402630529 --- *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 2026-07-05.*