What key is this song in? What scale should you play over it? Point your phone at the music and Jam Assist listens, then names the key, scale, and mode it hears - and lights up exactly where to play it on your guitar, bass, and piano. It is a compass for your ear, not an autopilot. Most tools only help once you already know the key: a chord chart, a tab, a scale diagram to copy. Jam Assist works one step earlier, for the moment you cannot hear it yet. It listens to whatever is actually sounding and tells you where you are: the key, the scale, the mode, live. That is the missing half. Key finders can hear a song but stop at the name and never show you the fretboard. Scale libraries show you the fretboard but cannot hear a thing, so you have to already know the scale to look it up. Jam Assist does both at once: it hears the music and lays that exact scale under your fingers, in real time. What you can do with it: - Jam and improvise in the right key over any track or backing loop - Work out what scale to solo over by ear, instead of guessing - Find the key of a song by ear, on guitar, bass, or piano - Watch the scale shapes light up live while you play - Learn the modes by hearing them named the moment they happen What it detects, honestly: It hears the notes in the room and names the key, scale, and mode: major and minor, all seven modes (Ionian, Dorian, Phrygian, Lydian, Mixolydian, Aeolian, Locrian), major and minor pentatonic, blues, hirajoshi, insen, and whole tone. It shows you the scale to play, not chords, and it is not a tuner. It reads live sound, so it is never a static scale dictionary you flip through. Private by design: everything runs on your device, mic in only. No cloud, no accounts, no network, nothing leaves your phone. Hear it, see the fretboard, and jam in the right key.