Comparison

Keys Trainer vs Compose Studio Score Input

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • 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
Features
Read full description

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.

About

Compose Studio Score Input

Features
Read full description

Copy an instrumental part into editable notation using touch controls. The app's controls and explanations are currently in Japanese. CHOOSE PITCH WITH A VERTICAL DRAG Move your finger up or down on the pitch pad, then release to enter the note at the score cursor. A preview note appears on the staff while you drag, and you can hear the pitch before committing it. ADJUST A NOTE WHILE HOLDING IT Keep one finger on the pitch pad while using another to change duration, dots or accidentals. Double-tap an accidental to lock it for repeated entry. You can also select an existing note and change its duration. ENTER TRANSPOSED PARTS AS WRITTEN Choose a transposing instrument, such as clarinet or alto saxophone, to enter the written pitches from its part. Saved pitches and playback use concert pitch. EDIT THE STRUCTURE OF THE PIECE Change the time signature, key signature, tempo and rehearsal mark from a selected measure. Add or remove measures in the same settings screen. ENTER TUPLETS Create groups of 3, 5, 6 or 7 equal notes. The selected note value sets the total duration of the group: selecting a quarter note before choosing triplets divides that quarter-note duration into three equal notes. Create the group, then enter its notes. SAVE AND SHARE Scores are saved on your device as .musil files, accessible in the Files app and shareable with other apps. Import a file into Programmable Metronome to use its tempo, time signatures and rehearsal marks. An editing draft is saved automatically so you can resume work when you reopen the app. This is a tool for entering a single melodic part; chord and multiple-voice entry are outside its current scope.

Screenshots

Keys Trainer4 screens
Compose Studio Score Input1 screens

Verdict

The call

The clearest difference is price: Compose Studio Score Input at Free against Keys Trainer's $2.99. Compose Studio Score Input also leads on update cadence (monthly vs every 9 months). Keys Trainer's advantage is iOS requirement (12.0 vs 16.0). 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

CostPrice · In-app purchases · Ads · Monetization

Compose Studio Score Input is free to download; Keys Trainer costs $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

Keys Trainer ships an update every 9 months, Compose Studio Score Input monthly. The most recent releases landed on October 22, 2026 and October 31, 2026 respectively.

Scorecard3 real differences · 7 level
Keys Trainer versus Compose Studio Score Input: the parameters behind the verdict, then further details
ParameterKeys TrainerCompose Studio Score Input
Price$2.99Free — better
Rating5.0 (2 ratings) — better—
Positive reviews0.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 9 monthsMonthly — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS12.0 — better16.0
Further details — not scored
Size30 MB21 MB
Age rating4+4+
DeveloperPlearn LLCNaoki Chiba

In-app purchases

None

Keys Trainer

No in-app purchases

None

Compose Studio Score Input

No in-app purchases

Questions

Is Keys Trainer free?
Keys Trainer costs $2.99, with no in-app purchases.
Is Compose Studio Score Input free?
Compose Studio Score Input is free to download, with no in-app purchases.
Do Keys Trainer or Compose Studio Score Input have ads?
Neither Keys Trainer nor Compose Studio Score Input shows ads.
Which is updated more often, Keys Trainer or Compose Studio Score Input?
Keys Trainer ships an update every 9 months, and Compose Studio Score Input monthly. Most recently, Keys Trainer was updated on October 22, 2026 and Compose Studio Score Input on October 31, 2026.

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