Solve puzzles by arranging colored spheres on a 3D cube. Each side has a 3x3 grid with nine unique colors. Rotate and tilt the phone to manipulate the cube. Complete levels by ensuring all colors appear once per side.
by 小健 赵★ 5.01 ratingsEducationFreeData updated 2026-09-06
Create art using realistic and watercolor effects. Draw with tools like marker, airbrush, crayon, and eraser. Apply fluid-based watercolor effects in the full version. Adjust colors and blend textures for detailed illustrations.
Solve puzzles by filling a 9×9 grid with numbers 1-9. Ensure no repeated numbers in rows, columns, or 3×3 sections. Track progress and complete challenges. Share high scores and compete with others.
Explore probability with interactive sliders and buttons. Calculate probabilities and percentiles for upper tail, lower tail, or two-tailed tests. Visualize results alongside numerical solutions. Compare continuous and discrete side-by-side.
Explore the gears and dials to understand ancient astronomical models. Adjust crank motion with a slider for clockwise or counter-clockwise rotation. Swipe to rotate and pinch to zoom for detailed inspection.