Unlimited solves
No daily cap, ever.
Pro is free while we’re in beta.
Unlimited solves, practice, worksheets and history. No card, no account.
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Your progress on this device
0day streak
0XP
0solves
0solo solves
0sets complete
XP comes from steps and answers you get right, never from reading.
What Pro keeps after beta
Unlimited practice
A fresh set after every solve, plus warm-up drills.
Saved continuity
Your full archive, streak and XP.
Deeper explanations
The Deep setting for stronger foundations.