A scrolling fretboard that shows you where to play. Fret-number bubbles flow right-to-left toward the hit line; play each note as it arrives. Turn on the mic to score your hits live.
Strings run top (thin high E) to bottom (thick low E), like tab. Each bubble shows the fret number to press on that string. A bubble lights green when the mic hears the right note as it crosses the line, orange if it passes unplayed. Mic scoring is optional — you can just follow along. On the Seven Nation Army riff, flip on 🥁 Backing for a drum-and-bass groove to play along to. On Bluetooth headphones the audio lags the visuals — tap 🫰 Tap to sync and tap along to the beeps to measure it automatically, or nudge −/+ by hand. If scoring feels like it misses notes you played right, your mic signal is arriving late — open 🎸 Strum to sync (mic on) and strum along to the clicks so scoring judges your playing at the moment the sound actually lands. Both settings are saved on this device until you change them.
Put on your headphones. A beep plays on every beat — tap the big button (or press the spacebar) exactly when you HEAR each beep. After several taps the app sets your audio delay automatically.