Diatonic Chords by Key vs Ear training
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Diatonic Chords by Key
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Key Chords turns music theory into chord shapes you can use. Explore the seven diatonic chords in major and natural minor keys, compare positions for guitar, ukulele, and Brazilian viola caipira, and keep a practical reference close while you practice or write. Explore chords by key • Choose a major or minor key and see its seven scale degrees with the matching chords. • Switch instruments to view the available shapes for guitar, ukulele, or viola caipira. • Save chord diagrams and diatonic chord sets as favorites on your device. • For guitar and viola caipira, choose to show an easier no-barre shape first when one is available. Find the shape you need Search the chord dictionary by symbol, instrument, or chord quality. Open a chord to compare the available fingering variations and use the clear diagrams as a quick reference during study or practice. Practice chord progressions Explore five familiar patterns, including I–V–vi–IV, ii–V–I, and I–IV–V, in different keys. Use them to practice changes, understand harmonic movement, or try ideas for your own music. Whether you are learning music theory, practicing chord shapes, or sketching a progression, Key Chords helps connect keys, degrees, and playable chords in one focused study tool.
Ear training
Develop perfect pitch and recognize notes, chords, and melodies by ear. This app offers a series of exercises to train your aural skills, with explanations and hints to help you learn at your own pace. Improve your ability to play along with songs or guess melodies.
- Develop perfect pitch
- Recognize notes and chords
- Identify intervals and chord progressions
- Learn major and minor scales
- Instrument-specific practice
- Hint function
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Would you like to be able to guess melodies by hearing them or be able to play accompaniment to your favorite songs on the guitar or piano? Ear training is the perfect app for you! This app will help you develop perfect pitch, and train your ear to recognize notes and chords in any key. The app consists of a series of exercises, which will gradually introduce you to all the notes and chords in the major and minor scales. You can also practice identifying intervals and chord progressions. Each exercise is accompanied by a clear and concise explanation, so you can understand the theory behind it. And if you get stuck, the app includes a handy hint function. The exercises are tailored to help you improve your aural skills, so you can develop at your own pace. You can also choose to practice in a particular key, or with a particular instrument. So why wait? Start training your ear today!
Screenshots
Verdict
The clearest difference is in-app purchases: Ear training at none against Diatonic Chords by Key's 1. Diatonic Chords by Key's advantage is ads (none vs shown) and update cadence (every 5 days vs every 8 months). On price and device support there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Diatonic Chords by Key sells 1 one-off in-app purchase. Ear training asks for nothing beyond the download.
Diatonic Chords by Key ships an update every 5 days, Ear training every 8 months. The most recent releases landed on October 25, 2026 and November 3, 2026 respectively.
| Parameter | Diatonic Chords by Key | Ear training |
|---|---|---|
| Price | Free | Free |
| Rating | — | 4.5 (248 ratings) — better |
| Positive reviews | — | 32.6% of reviews |
| Number of ratings | — | 248 — better |
| Update frequency | Every 5 days — better | Every 8 months |
| Ads | No — better | Yes |
| In-app purchases | Yes | No — better |
| Monetization | — | Ad-supported |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 13.6 — better | 15.6 |
| Further details — not scored | ||
| Size | 36 MB | 41 MB |
| Age rating | 4+ | 4+ |
| Developer | Mateus Polonini Cardoso | Alexey Ovod |
In-app purchases
Diatonic Chords by Key
- Campo Harmônico Pro$2.99
Ear training
No in-app purchases
Questions
Is Diatonic Chords by Key free?
Is Ear training free?
Do Diatonic Chords by Key or Ear training have ads?
Which is updated more often, Diatonic Chords by Key or Ear training?
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