27 apps
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Maths
4.580 ratings52.2k
Pipes
Rotate the pipes and bring water to every tile in one connected network.
Maths
4.649 ratings33.6k
Hashi
Connect every island into one network without crossing any bridges.
Maths
4.69 ratings20.6k
Recursion Explorer
See each term of a sequence built from the one before — in maths and in Python.
Maths
4.626 ratings13.6k
Proofs without words
See why (a+b)² = a² + 2ab + b² — pull a square apart and let the areas prove it.
Maths
4.711 ratings8.1k
Interest Lab
Same deposit, same rate, two outcomes. See where compound interest wins.
Maths
56 ratings5.8k
Solids of Revolution
Design an axial section, spin it, and work out V and S.
Maths
4.1574 ratings113.1k
Guess the Equation
Solve the daily equation in six guesses.
Maths
4.5392 ratings41.7k
Sudoku
Complete the daily 6×6 or 9×9 logic grid.
Maths
4.0236 ratings37.5k
Nonogram
Reveal the daily picture with row and column clues.
Maths
3.958 ratings36.1k
Marbleslides
Type an equation, hit launch, watch the marbles slide into the stars.
Maths
4.3231 ratings35.4k
Tower of Hanoi
Move all discs to the right peg — never on a smaller one.
Maths
4.0127 ratings33.1k
Minesweeper
Classic Minesweeper with optional probability hints.
Maths
4.7152 ratings32.9k
15 Puzzle
Slide the numbered tiles back into order, from lowest to highest.
Maths
4.2185 ratings15.2k
Fraction Helper
See fractions as pies, bars, and a number line.
Maths
4.835 ratings12.7k
Unit Converter
Convert units across length, mass, time, and more.
Maths
4.363 ratings10.7k
Unit Circle
Drag an angle and watch sine and cosine move.
Maths
4.572 ratings10.6k
3D Geometry
Rotate solids, read volume and surface area, and compare equal-volume shapes.
Maths
4.544 ratings10.4k
Graphing
Tune functions and watch the curve change.
Maths
4.719 ratings9.2k
Vectors
Draw vectors in the plane and in space, and watch every product work itself out.
Maths
4.819 ratings6.6k
Probability Playground
Flip, roll, spin, drop. Theory vs reality, live.
Maths
4.516 ratings6.2k
Function Analysis
Type any function and explore f, f′, f″ and its integral side by side.
Maths
4.515 ratings6k
Derivative Explorer
Drag along a curve and watch the tangent slope.
Maths
4.344 ratings5.9k
Plane Geometry
Explore 2D shapes with live formulae.
Maths
4.540 ratings5.8k
Geometry Theorems
Explore classic theorems with draggable proofs.
Maths
3.621 ratings5.6k
Pathfinding
Compare BFS, DFS, Dijkstra, and A* on a grid maze.
Maths
4.325 ratings5.4k
Sorting Visualiser
Watch six classic sorting algorithms race side by side.
Maths
4.317 ratings5.4k
Conic Sections
Tilt the plane and watch the conic shape change.