Plugin comparison
Specs, price and the Dubspot Score, side by side — with our verdict on which midi tool to buy.
Independent score / workflow fit / buying signal
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Contenders
Mixed In Key by Mixed In Key. Harmonic mixing and key detection software for DJs and producers. Find compatible keys fast for sets and songwriting.
Scaler 3 is a chord and music-theory MIDI assistant from Scaler Music. Score 8.6/10, price $99, formats and comparisons.
Score verdict
On the Dubspot Score, Scaler 3 comes out ahead (8.6). That said, the right pick depends on your workflow and budget — read both reviews before deciding.
Technical matrix
| Signal | Mixed In Key | Scaler 3 |
|---|---|---|
| Price | $58 | $99 |
| Dubspot Score | 8.1 | 8.6 |
| Formats | VST3, AU, AAX | VST3, AU, AAX |
| Type | Key detection / harmonic mixing software | — |
| Developer | Mixed In Key | Scaler Music |
| Product type | — | chord and music-theory MIDI assistant |
| Typical price | — | $99 |
| Formats | — | VST3, AU, AAX |
| Primary job | — | progressions and scale-aware writing |
| Catalog status | — | Current as of 2026 |
See the full plugin database for more comparisons.