Keys Trainer vs 対位法トレーニング
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Keys Trainer
Master key signatures and scales with this music learning app. Practice identifying keys, understanding note sharps/flats, and instantly recognizing scale layouts on a keyboard. Features include customizable practice, passive viewing, and a challenging game mode.
- Key signature recognition
- Scale layout identification
- Customizable learning range
- Intelligent training based on performance
- Practice, View, Game, and Search modes
- Earn coins, medals, and trophies
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Do you want to be capable of recognizing the key signatures at first sight? That is, when you see a key signature, you know what key it is and what notes should be sharp or flat immediately. Do you want to have the ability of instantly identifying the scale layout on a piano/keyboard for a given key? If your answer is yes, check out this app. It can help you acquire these skills which can definitely benefit your music learning and piano playing. Main Features: • Practice Mode You learn at your own pace simply by answering the question, and if you are wrong, the correct answer will be shown for the duration of your choice. • View Mode You don’t need to do anything but watching, the questions and answers will be shown automatically after the delay of your choice. Good for lazy people like me. • Game Mode In this exciting countdown mode, you can challenge yourself and earn as many coins, medals, and trophies as you can. • Search Mode This mode allows you to look up the keys by name, key signature or keyboard. • Learning Range Customization You can customize your learning range sot that you can focus on improving your weaknesses. • Intelligent Training Each question is generated intelligently based on the statistical information of your performance so that it can turn your weaknesses into strengths.
対位法トレーニング
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与えられたベースラインに対して、対旋律を考えていきます。 禁則に当てはまるかどうか判定して結果をフィードバックします。 自分で作った対旋律とベースラインを再生して響きを確認できます。
Screenshots
Verdict
The clearest difference is price: 対位法トレーニング at Free against Keys Trainer's $2.99. 対位法トレーニング also leads on update cadence (every 11 days vs every 9 months). Keys Trainer's advantage is iOS requirement (12.0 vs 15.4). On ads, in-app purchases 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
対位法トレーニング is free to download; Keys Trainer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Keys Trainer ships an update every 9 months, 対位法トレーニング every 11 days. The most recent releases landed on November 8, 2026 and November 12, 2026 respectively.
| Parameter | Keys Trainer | 対位法トレーニング |
|---|---|---|
| Price | $2.99 | Free — better |
| Rating | 5.0 (2 ratings) — better | — |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 9 months | Every 11 days — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | — |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 — better | 15.4 |
| Further details — not scored | ||
| Size | 30 MB | 166 MB |
| Age rating | 4+ | 4+ |
| Developer | Plearn LLC | Hiroaki Toya |
In-app purchases
Keys Trainer
No in-app purchases
対位法トレーニング
No in-app purchases









