Your training set, your algorithms, stars and notes live in this browser on this device. No account, no sync, no smart cube, no ads. Export JSON to keep a copy.
An F2L case library in your browser: the 41 standard cases and your own, a training set of just the cases you pick, 3D playback one move at a time with turn arrows, a highlight that keeps only the pair in colour, your own algorithms that may stop mid-pair, stars and notes. No smart cube, no account. Free, local, JSON backup.
F2Lpad is a case library with a 3D player, not a coach. It shows the algorithms you keep on a cube; it never reads a cube (no Bluetooth, no camera), it does not time you and it does not grade your moves. An algorithm that ends with the pair unsolved is shown as exactly that, nothing more.