Comparison

Harmony Keyboard vs CrossMetronome

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

Head to head
About

Harmony Keyboard

Features
Read full description

Train perfect intonation with just intonation. Harmony Keyboard is a powerful practice tool designed for musicians who want accurate tuning and beautiful harmony. It helps you hear and practice chords using both just intonation and equal temperament, making it ideal for ensemble rehearsal, wind band practice, choir training, and ear training. Whether you're a student, performer, or teacher, Harmony Keyboard helps develop a better sense of pitch and harmonic balance. KEY FEATURES • Just Intonation & Equal Temperament Switch between tuning systems to understand how harmony and tuning work in real music. • Intonation Training Practice tuning chords and intervals to develop a precise musical ear. • Instant Transposition Transpose instantly to any key for flexible practice. • Hold Function Sustain notes and chords while listening carefully to intonation and balance. • Wind Instrument Sounds Includes sounds such as flute, clarinet, and saxophone for realistic ensemble practice. • Customizable Tuning Adjust reference pitch (e.g. A=442Hz) and note name display. PERFECT FOR • Wind band practice • Brass and woodwind players • Choir rehearsal • Ear training • Music students and teachers Harmony Keyboard is a simple yet powerful tool for musicians who care about tuning, harmony, and musical precision.

About

CrossMetronome

Features
Read full description

シンプルかつ高機能なメトロノーム。 拍を複数のレイヤーで分割できるポリリズム機能、異なるテンポを同時に再生できるポリテンポ機能に対応。 全てのミュージシャン(特に打楽器奏者、ドラマー)のトレーニングや現代音楽など複雑な作品の練習にも最適。 拍に合わせてフラッシュライトを光らせる機能、カウントイン機能、BPMを次第に上げるテンポアップ機能などにも対応。

Screenshots

Harmony Keyboard4 screens
CrossMetronome3 screens

Verdict

The call

The clearest difference is ads: CrossMetronome at none against Harmony Keyboard's shown. CrossMetronome also leads on update cadence (every 3 days vs every 5 weeks). Harmony Keyboard's advantage is iOS requirement (15.0 vs 17.6). On price, 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

Both are free to download. Harmony Keyboard sells 1 in-app purchase, starting at $0.49 per month and CrossMetronome sells 2 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

UpkeepUpdate frequency

Harmony Keyboard ships an update every 5 weeks, CrossMetronome every 3 days. The most recent releases landed on October 24, 2026 and October 28, 2026 respectively.

Scorecard3 real differences · 3 level
Harmony Keyboard versus CrossMetronome: the parameters behind the verdict, then further details
ParameterHarmony KeyboardCrossMetronome
PriceFreeFree
Update frequencyEvery 5 weeksEvery 3 days — better
AdsYesNo — better
In-app purchasesYesYes
DevicesiPhone, iPad, iPod — betteriPhone, iPad
Requires iOS15.0 — better17.6
Further details — not scored
Size45 MB5 MB
Age rating4+4+
DeveloperSINCLAIR SYSTEMYuya Homma

In-app purchases

1 purchases

Harmony Keyboard

Subscriptions1
  • Pro Version$0.491 Month
2 purchases

CrossMetronome

One-time2
  • コーヒーをおごる$1.99
  • 広告を永久削除$3.99

Questions

Is Harmony Keyboard free?
Harmony Keyboard is free to download, with in-app purchases available.
Is CrossMetronome free?
CrossMetronome is free to download, with in-app purchases available.
Do Harmony Keyboard or CrossMetronome have ads?
Harmony Keyboard shows ads; CrossMetronome does not.
Which is updated more often, Harmony Keyboard or CrossMetronome?
Harmony Keyboard ships an update every 5 weeks, and CrossMetronome every 3 days. Most recently, Harmony Keyboard was updated on October 24, 2026 and CrossMetronome on October 28, 2026.

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