35 apps
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Physics
4.7602 ratings33.7K
Rocket Workshop
Build a rocket, launch it and find out what it takes to reach space.
Math
4.69 ratings20.6K
Recursion Explorer
See each term of a sequence built from the one before — in math and in Python.
Math
4.626 ratings13.6K
Proofs without words
See why (a+b)² = a² + 2ab + b² — drag a square apart and let the areas prove it.
Math
4.711 ratings8.1K
Interest Lab
Same deposit, same rate, two outcomes. See where compound interest wins.
Math
56 ratings5.8K
Solids of Revolution
Design an axial section, spin it, and work out V and S.
Biology
4.81,764 ratings142.5K
Human Body Atlas
Explore, isolate, and take apart thousands of anatomical structures.
Biology
4.8911 ratings90K
Cell 3D
Explore generated plant and animal cell models in 3D.
Physics
4.8420 ratings55K
Solar System
Explore the planets, the Moon's phases, and eclipses in one 3D model.
Chemistry
4.6247 ratings42.8K
Build an Atom
Build isotopes and ions from subatomic particles.
Chemistry
4.8299 ratings37.1K
Virtual Lab
Drop metals into water and watch reactions unfold.
Math
4.3231 ratings35.4K
Tower of Hanoi
Move all disks to the right peg — never on a smaller one.
Chemistry
4.7123 ratings31K
3D Molecules
Drag to rotate, toggle lone pairs, and read the geometry and bond angle.
Chemistry
4.667 ratings21.4K
pH Mixer
Drip acid or base and watch the pH shift.
Chemistry
4.5170 ratings17.1K
Ice to Steam
One flask of water — freeze it, boil it, and peek inside at the molecules.
Physics
4.680 ratings13.2K
Incline Forces
See how gravity, friction, and force interact.
Physics
4.748 ratings11.9K
Double Pendulum
Watch chaos emerge from two coupled pendulums.
Math
4.363 ratings10.7K
Unit Circle
Drag an angle and watch sine and cosine move.
Math
4.572 ratings10.6K
3D Geometry
Rotate solids, read volume and surface area, and compare equal-volume shapes.
Physics
4.734 ratings9.8K
Waves
Drive a string and watch waves reflect.
Math
4.719 ratings9.2K
Vectors
Draw vectors in the plane and in space, and watch every product work itself out.
Physics
4.825 ratings8.8K
Color Models
Mix light, ink, and hue — watch RGB, CMYK, and HSV make the very same color.
Physics
4.419 ratings8.8K
Magnetic Field
Drag magnets and wires, switch views, and read the field with a compass.
Physics
4.628 ratings7.9K
Bending Light
Aim a laser and watch refraction bend the beam.
Physics
4.740 ratings7.3K
Projectile Motion
Launch a ball and watch gravity shape the arc.
Math
4.819 ratings6.6K
Probability Playground
Flip, roll, spin, drop. Theory vs reality, live.
Physics
4.435 ratings6.3K
Optics Bench
Pick a lens or mirror, drag the object, and watch the rays form the image.
Physics
4.828 ratings6.1K
Pendulum Lab
Swing a pendulum and watch energy trade places.
Math
4.515 ratings6K
Derivative Explorer
Drag along a curve and watch the tangent slope.
Math
4.344 ratings5.9K
Plane Geometry
Explore 2D shapes with live formulas.
Math
4.540 ratings5.8K
Geometry Theorems
Explore classic theorems with draggable proofs.
Math
3.621 ratings5.6K
Pathfinding
Compare BFS, DFS, Dijkstra, and A* on a grid maze.
Physics
4.715 ratings5.5K
Doppler Effect
Move a source past a listener and watch the wavefronts compress and stretch.
Physics
4.533 ratings5.5K
Diffraction & Interference
Set slit count, wavelength and spacing, then read the maxima off the screen.
Math
4.325 ratings5.4K
Sorting Visualizer
Watch six classic sorting algorithms race side by side.
Math
4.317 ratings5.4K
Conic Sections
Tilt the plane and watch the conic shape change.