Speedcubing trainer, timer and algorithm library Get faster, have fun.

Yes. xcross.gg is free and will always stay free: the timer, trainers, algorithm library, daily challenges, multiplayer and sync across devices cost nothing. There is also an optional subscription, xcross.gg Pro at €4.99 a month, which adds deeper analysis, more advanced tools and adaptive training.

xcross.gg connects over Bluetooth to GAN, MoYu and QiYi smart cubes, and to GAN smart timers. A smart cube is optional: any cube works with the timer and the trainers.

The xcross.gg timer handles 2x2 to 7x7, Megaminx, Pyraminx, Skewb, Square-1, Clock and FTO. The algorithm library is updated continually, with new algorithm sets and puzzles added over time.

Adaptive mode serves the cases you are weakest at more often, based on your own stats over a period you choose. You can also set a time limit as a criterion, so a slow rep counts as a DNF.

Each trainer has its own stats page. Recall trainers show your average time and its standard deviation per case, plus TPS and time to first move when you use a smart cube. Prediction, recognition and transition trainers show duration, a breakdown per case and your progress day by day.

With a smart cube, the trainer shows a case, detects when you solve it, saves the rep and shows the next case right away. You never stop to scramble, so a session fits more reps. This works in the algorithm trainers, not for full solves.

Yes. xcross.gg runs in the browser, on iOS and on Android, with one account and the same sessions on every device.

xcross.gg stores your solves and training progress in your account so they sync between devices. You can delete the account and its data at any time.