8.6Great
Scaler 3 is a chord and music-theory MIDI assistant from Scaler Music. Score 8.6/10, price $99, formats and comparisons.
Plugin comparison
Scaler 3 vs zplane TONIC 2
Specs, price and the Dubspot Score, side by side — with our verdict on which midi tool to buy.
Independent score / workflow fit / buying signal
Contenders
The side-by-side
zplane TONIC 2 is a key and scale detection plugin that reads any audio or MIDI in real time, suggests chords you can drag to your DAW, and lists at 39 euros.
Technical matrix
Specs compared
| Signal | Scaler 3 | zplane TONIC 2 |
|---|---|---|
| Price | $99 | 39 euros (33% launch discount) / 10 euro upgrade |
| Dubspot Score | 8.6 | — |
| Formats | VST3, AU, AAX | AAX, AU, VST3 |
| Product type | chord and music-theory MIDI assistant | — |
| Developer | Scaler Music | — |
| Typical price | $99 | — |
| Formats | VST3, AU, AAX | AAX, AU, VST3 |
| Primary job | progressions and scale-aware writing | — |
| Catalog status | Current as of 2026 | — |
| Type | — | Key and scale detection plugin |
| Released | — | 21 October 2026 |
| Detection | — | Audio and MIDI, real time or offline |
| Results | — | Up to three key and scale matches with probability |
| MIDI | — | MIDI in and out, chord drag-and-drop |
| Tuning display | — | Deviation from A = 440 Hz in cents and hertz |
| Operating systems | — | Windows 10/11 64-bit; macOS 13+ Intel and Apple Silicon |
| Latency | — | None |
| Price | — | 39 euros, 33% launch discount; 10 euro upgrade from TONIC 1 |
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