Comparison

Music Transpose vs Composer Lab

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

Head to head
About

Music Transpose

Easily adjust the pitch, speed, and tempo of your music files. Supports various audio and video formats with visual feedback on sound quality impact. Ideal for music education and practice.

Highlights
  • Adjust pitch, speed, and tempo
  • Supports common audio and video formats
  • Visual pitch range and sound quality indicators
  • Fine-tune pitch in half-tone increments
  • Independent pitch and speed adjustments
  • Export in multiple formats
Features
Read full description

Music Transpose is a convenient app for adjusting the pitch(key), speed, and tempo of music. Features: 1. Supports common audio formats (mp3, m4a, wav, tiff, flac etc.) and video formats (mp4, mov, avi, mpg etc.). 2. Pitch adjustment displays the pitch range and supports color-coded prompts (green, orange and red indicate the impact on sound quality). 3. Supports fine-tuning of pitch in half-tone increments. 4. Speed adjustment is displayed as a multiple and also shows the tempo (BPM). 5. Pitch and speed adjustments are independent of each other. 6. Supports export in multiple formats. Why do you need Music Transpose ? In music education and practice, adjusting the pitch(key) and tempo of songs is often necessary. Professional software can be complex and inconvenient to use. Music Pitch and Speed Adjuster provides an easy-to-use solution to this problem. Purchasing Information: The app only requires a one-time purchase for lifelong access with no additional fees. The app is run locally and does not rely on cloud functionality, so you don't have to worry about it being unavailable due to network issues. Trial vs. Full Version: Aside from length limitations on audio preview and export, the trial version has the same features as the full version. File Import: The app provides instructions on how to import files from other apps. You can also use the sharing function in other apps or AirDrop to send audio or video files to Music Pitch and Speed Adjuster. Common Questions and Feedback: If the app indicates that a file is invalid, it's likely that the file is damaged or in an uncommon format. Try converting it to a more common format before importing. For additional questions, you can email yueyin.music@foxmail.com or consult the WeChat account allhealthyand.

About

Composer Lab

Explore harmonic structures, scales, and microtonal tuning systems. This app offers tools for organizing pitch material, crafting custom tunings, and managing rhythmic units for songwriting and composition.

Highlights
  • Harmonic structure exploration
  • Custom tuning system creation
  • Rhythmic unit management
  • Microtonal scale playback
  • DAW file export (.scl, .tun)
  • Pitch set theory principles
Features
Read full description

Set Module:
 The Set Module enables musicians to explore harmonic structures and scales of all kinds, and discover new ways of organizing pitch material. Built on the principles of pitch set theory, it offers an intuitive interface along with a rich set of practical tools. Features include fixed superset, fixed subset, invariance calculation, interval vector constraints, unfolding, and numeric recombination mode. The module is designed to make working with complex musical ideas easier and more intuitive, and can be used in songwriting, arranging, film scoring, and concert music composition. Tempo Module:
 The Tempo Module allows users to set a range for rhythmic units and define a tolerance for timing variations. It supports a system where up to six different tempos can be freely switched and converted. Tuning Module:
 Start at 1/1 and craft your own tuning system with cents or ratios. Map it onto a standard keyboard so you can transpose in 12ET or in precise cent steps. Hear your microtonal scales live, then export .scl and .tun files straight to your DAW—unlocking boundless realms beyond the twelve-tone limit. New Euclid and Orbit modules added! Detailed guide will be updated shortly.

Screenshots

Music Transpose4 screens
Composer Lab4 screens

Verdict

The call

Music Transpose and Composer Lab both sit at 5.0 stars, but that hides the real split: 100% of Composer Lab's written reviews are positive against 50% of Music Transpose's. Composer Lab also leads on price ($17.99 vs $24.99) and update cadence (every 3 days vs fortnightly). Music Transpose's advantage is ratings volume (6 vs 2) and iOS requirement (14.0 vs 18.2). On rating, ads, in-app purchases and monetization model 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

Music Transpose costs $24.99 and Composer Lab $17.99 up front. Neither carries in-app purchases, so what you see is what you pay.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 5.0 for Music Transpose against 5.0 for Composer Lab. Both are backed by a comparable volume of ratings — 6 and 2 respectively. Written reviews are what separate them: 50% of Music Transpose's written reviews are positive against 100% of Composer Lab's.

UpkeepUpdate frequency

Music Transpose ships an update fortnightly, Composer Lab every 3 days. The most recent releases landed on October 24, 2026 and October 22, 2026 respectively.

Scorecard5 real differences · 5 level
Music Transpose versus Composer Lab: the parameters behind the verdict, then further details
ParameterMusic TransposeComposer Lab
Price$24.99$17.99 — better
Rating5.0 (6 ratings)5.0 (2 ratings)
Positive reviews50.0% of reviews100.0% of reviews — better
Number of ratings6 — better2
Update frequencyFortnightlyEvery 3 days — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidPaid
DevicesiPhone, iPod, Mac — betteriPhone, iPad
Requires iOS14.0 — better18.2
Further details — not scored
Size36 MB49 MB
Age rating4+4+
Developer同宝 金笑一 杨

Customer experience

Music Transpose

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews4 reviews
Positive50.0%
Neutral25.0%
Negative25.0%

Composer Lab

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews1 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Music Transpose

No in-app purchases

None

Composer Lab

No in-app purchases

Questions

Is Music Transpose free?
Music Transpose costs $24.99, with no in-app purchases.
Is Composer Lab free?
Composer Lab costs $17.99, with no in-app purchases.
Which has better reviews, Music Transpose or Composer Lab?
Music Transpose and Composer Lab are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.
Do Music Transpose or Composer Lab have ads?
Neither Music Transpose nor Composer Lab shows ads.
Which is updated more often, Music Transpose or Composer Lab?
Music Transpose ships an update fortnightly, and Composer Lab every 3 days. Most recently, Music Transpose was updated on October 24, 2026 and Composer Lab on October 22, 2026.

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