PhaseRings vs Scaler 3
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
PhaseRings
Create expressive music with intuitive touch gestures. Explore various sound schemes and generative composition tools to craft unique musical pieces. Supports MIDI and Audiobus for advanced integration.
- Expressive touch gesture music creation
- Seven unique sound schemes
- Generative composition engine
- Customizable pitch compositions
- Core MIDI support
- AudioBus and Inter-App Audio support
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PhaseRings is a musical instrument for performing expressive music with touch gestures. Anyone can create a beautiful piece of music with our sound schemes and generative composition engine! Each ring on the screen represents a different pitch, and you can tap and swirl on each ring to create combinations of long and short notes. The angle and size of your tap will change the timbre of the notes you create! New in version 3.0, PhaseRings is also an AUv3 Audio Unit plugin. Load it as an instrument in hosts like AUM, GarageBand, Logic Pro for iPad, and Cubasis — play the rings inside your host, run several instances at once, drive it from MIDI tracks, and record it through your host's effects. PhaseRings includes seven expressive "sound schemes" featuring percussive sounds like marimba and singing bowls as well as pure synth sounds like phase and string synthesis. Four "compositions" of pitches are included in the app, but you can also create your own custom composition by choosing three base notes and scales. PhaseRings will do the rest, generating a series of great setups from the harmony you choose! Features: - AUv3 Audio Unit instrument for AUM, GarageBand, Logic Pro, Cubasis, and other hosts - 7 sound schemes - 4 built-in compositions - Custom generative composition - 11 scales and modes - Core MIDI in and out for iOS MIDI accessories and MIDI-enabled apps - VoiceOver support and light/dark appearance
Scaler 3
This music theory workstation helps you discover chords, explore harmony, and build complete musical ideas. It offers a redesigned workflow, expanded creative potential, and powerful new capabilities for songwriting and music production.
- Discover music's key with MIDI and audio detection
- Access over 1,000 chord sets, keys, and modes
- Build intelligent chord progressions with automatic voice-leading
- Structure full musical ideas with Scenes and Arrange Page
- Transform chords into melodies, basslines, and phrases
- Explore harmony with Circle of Fifths and modulation tools
- Host AUv3 plugins and interoperate with desktop versions
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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
Screenshots
Verdict
The clearest difference is price: PhaseRings at Free against Scaler 3's $12.99. PhaseRings also leads on review sentiment (80% vs 57%) and device support (3 vs 1). Scaler 3's advantage is update cadence (fortnightly vs every 5 months) and rating (4.7 vs 4.5). 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
PhaseRings is free to download; Scaler 3 costs $12.99 up front. Neither carries in-app purchases, so what you see is what you pay.
Scaler 3 holds the better App Store score, 4.7 against 4.5. That said, the two scores are not equally well evidenced: Scaler 3 has 165 ratings behind it against 18, so its average is the more settled of the two. Written reviews complicate that: 80% of PhaseRings's written reviews are positive against 57% of Scaler 3's, so the app with the better star average is not the one people write more warmly about.
PhaseRings ships an update every 5 months, Scaler 3 fortnightly. The most recent releases landed on October 24, 2026 and October 25, 2026 respectively.
| Parameter | PhaseRings | Scaler 3 |
|---|---|---|
| Price | Free — better | $12.99 |
| Rating | 4.5 (18 ratings) | 4.7 (165 ratings) — better |
| Positive reviews | 80.0% of reviews — better | 56.7% of reviews |
| Number of ratings | 18 | 165 — better |
| Update frequency | Every 5 months | Fortnightly — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Devices | iPhone, iPad, iPod — better | iPad |
| Requires iOS | 16.0 | 16.0 |
| Further details — not scored | ||
| Size | 6 MB | 1.1 GB |
| Age rating | 4+ | 4+ |
| Developer | Charles Martin | Scaler Music |
Customer experience
PhaseRings
Scaler 3
In-app purchases
PhaseRings
No in-app purchases
Scaler 3
No in-app purchases








