Play with customizable difficulty levels from easy to expert. Track mistakes and highlight duplicates. Use a straightforward toolbar for common actions. Enable Pro Mode for no hints. Pencil in potential numbers. Receive hints when stuck.
Play One Line One Stroke to connect dots with a single touch. Solve brain with simple rules. Track progress and challenge yourself with daily exercises. Share achievements and compete with friends.
Perform complex calculations with high-precision math functions including trigonometric, hyperbolic, and special functions. Calculate derivatives, integrals, and roots. Program custom functions and store equations.
