Cavaquinho Tools
No installs, no accounts — everything below runs in the browser tab you already have open.
Cavaquinho Tuner
Reference tones for the four D–G–B–D strings, one at a time — check the two D strings against each other first — plus a mic tuner where your browser allows it.
Practice
Metronome
A steady click from 30 to 280 BPM with accented downbeats — from a slow choro to a driving samba tempo.
Practice
Theme Builder
Pick four colors and derive a full, contrast-checked palette for the whole site.
ReferencePoint the Click at Something
Give the metronome a job: the three cells chopped dead even · daily chopping drills · chord changes that don’t stop the chop · scale maps. Every tool runs in the browser — nothing to install, nothing to sign up for.