GrooveDojo

GrooveDojo is a free, browser-based drum groove editor and practice tool.

Connect your electronic drum kit via MIDI, practice your favorite grooves, and get real-time timing feedback. Review your sessions to discover where you can improve.

No electronic kit? You can still play along with the built-in sounds and metronome. 

Free to use. No installation or account required.

https://groovedojo.app/