Comparison

ScaleCoach Pro vs RPLY

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

Head to head
About

ScaleCoach Pro

This app helps musicians master scales and arpeggios with instant pitch detection. It offers various scale modes, custom scale programming, and a polyphonic piano with adjustable tuning. Users can test their intonation and receive feedback on accuracy.

Highlights
  • Major and Melodic Minor scale modes
  • Custom scale and melody programming
  • Polyphonic piano with 7 octaves
  • Adjustable tuning (415-466 Hz)
  • Built-in metronome
  • Pitch detection and intonation feedback
  • S.W.Y.P. (See What You Play) feature
Features
Read full description

ScaleCoach is designed for instant pitch detection based scale/arpeggio training. ScaleCoach is a high-end app, that will help you master all the scales you need, in an easy and entertaining way.   ScaleCoach is an important tool in teaching music. Train alone or challenge each other. Who can hit it spot on!   ScaleCoach is your new musical best friend.   On our website scalecoach.com you will find out more about this outstanding app and see a demonstration. FEATURES - Major modes - a collection of diatonic scales from the Major mode - Melodic Minor modes - collection of the scales from Mel. Minor mode - Symmetric + collection of symmetric scales and Blues, Pentatonic etc. - Program your own scales or melodies and save them. - 7 octaves of grand piano - Polyphonic piano - Master tuning from 415 - 466 Hz  - Built-in metronome - Tempo conversion from 20-480 notes per minute - Note names on/off - Preplay note on/off - Play scales up or down // up-down or down-up - Move scales up - down - repeat - play once - S.W.Y.P. "See What You Play" either as single tone or multiple tones - S.W.Y.P. includes on screen Hz detector - Score 0-100 point - 7 languages ScaleCoach is the first and only app that lets you play all the scales and at the same time check your intonation.   When you have learnt your scale you can test yourself and see if your intonation is correct. You will get feedback whether you sing or play either a false note or in tune. DESCRIPTION Intonation forms part of the basis in music when you're playing by yourself or with others. It is therefore very valuable to be able to test your intonation and with ScaleCoach you can test it with any instrument.   That includes all fretless instruments as violin, chello, double-bass and all other instruments as trumpet, saxophone etc. The singers can learn how to sing in tune. ScaleCoach will support you regardless of your level and let you choose the tempo. In the S.W.Y.P (See What You Play), you will be able to see what you sing or play on the ScaleCoach piano. B or H? With ScaleCoach you can have them both. Play wirelessly from your device to your Apple TV and AirPlay-enabled speakers and share your masterpiece in coaching yourself and music buddies.

About

RPLY

Features
Read full description

Do you ever find yourself: - transcribing, - copying, - improvising to, - playing along, - learning by ear, - analyzing, - studying, - annotating, - dancing, - acting, or just getting close to a piece of music by replaying a specific part of it again and again? RPLY (pronounced replay) is a music player designed to aid you in these specific tasks with the help of Apple Music.

Screenshots

ScaleCoach Pro4 screens
RPLY3 screens

Verdict

The call

The clearest difference is price: RPLY at Free against ScaleCoach Pro's $3.99. RPLY also leads on update cadence (every 2 days vs every 36 months). ScaleCoach Pro's advantage is device support (3 vs 1). On ads, in-app purchases and iOS requirement 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

RPLY is free to download; ScaleCoach Pro costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

UpkeepUpdate frequency

ScaleCoach Pro ships an update every 36 months, RPLY every 2 days. The most recent releases landed on October 13, 2026 and October 24, 2026 respectively.

Scorecard3 real differences · 7 level
ScaleCoach Pro versus RPLY: the parameters behind the verdict, then further details
ParameterScaleCoach ProRPLY
Price$3.99Free — better
Rating2.0 (2 ratings) — better—
Positive reviews50.0% of reviews—
Number of ratings2 — better—
Update frequencyEvery 36 monthsEvery 2 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaid—
DevicesiPhone, iPad, iPod — betteriPhone
Requires iOS15.6 — better16.4
Further details — not scored
Size8 MB5 MB
Age rating4+4+
DeveloperHans Toft-OlsenFortunity Labs

In-app purchases

None

ScaleCoach Pro

No in-app purchases

None

RPLY

No in-app purchases

Questions

Is ScaleCoach Pro free?
ScaleCoach Pro costs $3.99, with no in-app purchases.
Is RPLY free?
RPLY is free to download, with no in-app purchases.
Do ScaleCoach Pro or RPLY have ads?
Neither ScaleCoach Pro nor RPLY shows ads.
Which is updated more often, ScaleCoach Pro or RPLY?
ScaleCoach Pro ships an update every 36 months, and RPLY every 2 days. Most recently, ScaleCoach Pro was updated on October 13, 2026 and RPLY on October 24, 2026.

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