Solids3D

Solids3D is a pocket studio for mathematical shapes, drawn as precise technical line art. Pick a shape and spin it with your finger. It turns with natural momentum, so you can look at it from every side. Switch between Wire, Solid and Points views, roll it with the turntable ring or a two-finger twist, and pinch to zoom. A live readout and axis gizmo show exactly how the shape is turned. 80 SHAPES, ORGANIZED FOR BROWSING Swipe right (or tap the logo) to open the shape menu, with search and collapsible categories: • Platonic solids – cube, tetrahedron, octahedron, dodecahedron, icosahedron • Prisms and pyramids – antiprisms, bipyramids, trapezohedra, frustums, stars, gears, twisted towers • Archimedean solids – including the truncated icosahedron (the classic soccer ball) • Catalan solids – rhombic dodecahedron, rhombic triacontahedron and more • Stellations and compounds – stella octangula, stellated dodecahedron • Curved forms and turned shapes – sphere, torus, egg, vase, wine glass, chess pawn • Curves and knots – helix, double helix, trefoil knot, any torus knot, figure-eight knot, seashell • Surfaces – Möbius strip, Klein bottle, helicoid, saddle • Organic shapes – heart, pretzel, blob, tanglecube, jack TYPE A NAME, GET A SHAPE Not in the list? Type it in "Make a shape" and Solids3D builds it on the spot: "hexagonal prism", "12-sided bipyramid", "torus knot 3 5", "20-tooth gear", "soccer ball". It understands typos, too. SAVE AND EXPORT • Save any shape to your collection and find it again under Saved. • Export the current view as a high-resolution image. • Export the shape itself as an STL file for 3D printing, sized in millimeters, or as an OBJ file for other 3D apps. Solids3D tells you when a shape is an open surface that can't be printed as a solid. PRIVATE AND SIMPLE Everything is generated on your iPhone. No account, no ads, no tracking, and nothing leaves your device unless you choose to export it. Great for students, teachers, makers, designers and anyone who loves geometry.