ScrimTrack Makes Scrimba Practice Count

Why it surfaced

ScrimTrack distinguishes active editor work and visible lesson playback from merely leaving a tab open, then keeps the resulting history locally in Chrome. It is unusually explicit about privacy: no account, no learning-data backend, JSON export, and public MIT-licensed source.

A free, open-source Chrome extension that tracks active learning time on Scrimba, with goals, streaks, recaps, and path-progress estimates.