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#1 Music App on iPad
Award-winning music theory workstation
Create chords, melodies and songs anywhere with Scaler 3 iPad
The world’s most popular music theory workstation, Scaler 3, is now available on iPad — updated to Scaler 3.3 with Multi-Bind, improved Detection, enhanced workflow and desktop interoperability.
With a redesigned workflow, expanded creative potential and powerful new capabilities, Scaler 3 helps you discover chords, explore harmony and build complete musical ideas.
The workflow doesn’t have to end with your finished chord progression - Scaler 3 can host AUv3 plugins and features a full arranger and mixer, letting it fit into your existing setup or become your entire creative environment for music theory.
Browse
Draw from over 1000 chord sets, keys and modes, organised by mood, artist and genre. Build chord progressions by dragging and dropping chords, and receive intelligent suggestions for what could come next.
Create
Explore harmonic possibilities using tools like the Sketch Pad, Explore page, Circle of Fifths and Modulation pathways. Scaler’s creative tools and music theory assistance help you move beyond common progressions and discover new musical ideas.
Arrange
Turn your progression into a full musical sketch with tracks for chords, bass, melodies and custom MIDI patterns. Use Multi-Bind to perform and loop multiple lanes at once, creating fast composition ideas and live performance workflows. Scaler 3 can generate MIDI for all sorts of instruments and adapt it to the needs of your song. Host AUv3 plugins to play your parts, transforming Scaler 3 into a powerful composition and MIDI production environment.
Key Features
• Discover your music’s key with MIDI and audio detection and explore compatible scales, modes and chord sets
• Access over 1,000 chord sets, keys and modes organised by mood, genre and artist inspiration
• Build intelligent chord progressions with automatic voice-leading
• Use Scenes and the Arrange Page timeline to structure full musical ideas
• Transform chords into melodies, basslines, arpeggios and phrases using Scaler’s Motions library
• Explore harmony using the Circle of Fifths, chord substitutions, inversions and voicing tools
• Experiment with modulation suggestions to move between keys
• Record ideas directly with User Track and edit them in the piano roll
• Perform one-finger chords and melodies using Bind MIDI
• Route generated chords and performances to other music apps using AUv3 and MIDI output
• Play progressions using internal instruments including pianos, synths and orchestral sounds
• Works standalone or alongside apps like Logic Pro for iPad, GarageBand, AUM and Cubasis
• Move between Scaler 3 on iPad and desktop by sharing presets, chord progressions and files
Content
• Thousands of chords, scales and harmonic possibilities
• Artist chord sets created by musicians including Carl Cox, MJ Cole and The Temper Trap
• Generate MIDI with hundreds of melodic phrases, basslines and performances
• Internal instrument library including pianos, synths and orchestral sounds
Perfect For
• Songwriting
• Music production
• Composition
• Learning harmony and music theory
• Exploring new musical ideas
What People Are Saying
“Scaler 3 is an incredibly powerful music theory tool. It's a gamechanger for both beginners and seasoned producers.”
-David Wills (Michael Jackson, Whitney Houston, Phil Collins)
“Scaler 3 opens up a whole new world of possibilities… a fantastic gateway into harmony and composition.”
-Daryl Bennett (Grammy-nominated composer)
“Scaler 3 has evolved into a fully-fledged compositional toolkit. A triumph.”
-Sound On Sound
“Scaler 3 delivers the most comprehensive, powerful set of composition tools you can get.”
-Attack Magazine
“Scaler 3 takes everything that made Scaler 2 brilliant and makes it even better.”
-The Sound Test Room
Awards
• KVR Readers Choice Awards - Winner 2025
• Plugin Boutique Awards - Best Music Theory Software 2025
• Sanjay C #1 Tool - Top Plugin of 2025
• #1 Music Theory App - Future Music Magazine 2024
Big big thank you to the Scaler Music developers for not only bringing Scaler 3 to iPadOS, but continuing to issue these updates and maintaining parity with the desktop version. I’ve been a Scaler user on MacOS for many years now and having a fully functional mobile version on my iPad is so valuable. Being able to develop new ideas literally anywhere, anytime, and bring them back onto my Mac whenever is a workflow paradise. If you’re into making music, give Scaler 3 a very serious look - it works so well for all styles/genres and will help you learn more and more about music theory while you’re using it. Worth every single penny and more.
Developer Response
A big thank you to you for your support. We care deeply about Scaler 3 and this type of feedback really helps drive us. Thanks.
Works great: updated review
HumbleMemeFarmer
I had some issues with what I thought was scaler 3 not recording midi performances correctly but it turned out to be a Massive X patch. So now I update my review to 5 stars. I’m happy to report that it is working correctly for my needs now. I’d love to see more progression libraries added, but only because I am horrible with theory and mixing and matching chords is not something I have a lot of time for right now, unfortunately. I do love the ability to plug Scaler 3 iPad into macos and use it to record midi into Bitwig. It keeps me from having to drag around midi or manage routing Scaler 3 vst as a separate track piping midi into an instrument. I just plug and go. Bitwig makes this easy.
Developer Response
Thanks for updating your review and appreciate the feedback! There's lifetime of potential chord progressions in Scaler 3 and the Explore Page is a great next step as it colour codes the next 'most compatible' chord. So you can be 'safe' (darker blues) or 'experimental' (lighter greys) whilst being guided. Check out some videos on the 'Explore Page' on the Scaler Music YouTube channel!
An amazing app at an affordable price
_IYQ2_
If I were stuck on a desert island with only one music app, it’d be Scaler 3 from Scaler Music.Packed with features yet impressively optimized as an iPad app, it surprises and delights. From beginners to pros, it’s the ultimate tool for sketching ideas and scores.It effortlessly handles simple to complex chords, vast instrument libraries, key changes, articulations, and more—plus seamless MIDI integration.This app could easily power an entire music theory course.
Great idea, but almost unusable execution
potahtochip
This has to be one of the most poorly thought out UXs I've ever used. The app starts with (and I'm not kidding) a 40-page slideshow with a seemingly random collection of little facts about the UI, with no clear "what you're supposed to do" ever presented So you finish the 40-page slideshow but you still don't know how to actually use the app. Your choice is to go watch an hour of video or figure it out yourself I chose to figure it out myself, which was a huge mistake, not least because the iPad port of this app seems like an afterthought. There's all sorts of hidden functionality that you just have to know how to do. There are weird oversights like the inability to scroll lists of chords horizontally Take even the most basic of tasks. I've been at it for an hour and I still can't figure out how to delete a chord from my working chord progression down on the bottom. Or Say you have a couple of chords that you like and you want a freeform exploration of what should come next. I guess you open up the creative tab. I don't know if that's right, but if you do that, there's no clear connection between the chord visual aids and the actual working set of chords you've selected. Rather than just clicking through the recommended next chords using the little chord maps, you have to go and find the scale of your chord and hope that it's in the visual cloud. I know these examples are hard to follow, maybe it just takes more than an hour to figure out how to use this thing, but that should give you an indication of just how hard this app is to useWould highly recommend some investment in UX thinking here. The app looks pretty,But this app needs someone on the team thinking about the user journey, user goals, intuitiveness, etc. If I wanted an inscrutable UI that I had to fight, I'd go use Rapid Composer.
Developer Response
Hi, thanks for the comment. Overall it seems you're struggling with Scaler 3 itself. Not going to lie to you, this is not a program you will learn in one hour. The 40 page slideshow is really helpful for coming back to and learning its power features but it's only the first few pages that cover gestures.Scaler 3 will love you back if you learn to love Scaler 3. It's a very powerful program that is used by many of the world's top producers and composers. We try our best to help people learn and use Scaler 3 to its max potential. Really hope you get to love it.
Scaler 3.3.1 Resolves an issue affecting stability on older iPads and older iPadOS.
Scaler 3.3.0 brings major new creative features, workflow improvements and full desktop/iPad interoperability.
Multi-Bind lets you perform and loop multiple lanes at once, while the updated Motion workflow allows different Motion types across different tracks.
You can now move more easily between Scaler 3 on iPad and desktop, sharing presets, chord progressions and files between both versions.
This update also includes an improved Detection workflow with Detection History, visible timelines across Browse, Create and Arrange, better chord editing, updated Voice Grouping, improved preset management, new content, enhanced touch behaviour and an updated onboard tutorial.
Version 3.3.1
The developer, Scaler Music, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Not Collected
The developer does not collect any data from this app.
Privacy practices may vary, for example, based on the features you use or your age. Learn More
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More