CADsmith

CADsmith is parametric 3D CAD for iPad, designed from the first tap for fingers.

Draw a sketch, pull it into a solid, round the edges, bore the holes. Every step is recorded as a feature you can revisit. Change a length in the first sketch and the holes, fillets and chamfers that came after it follow, because they are attached to the geometry by meaning, not by position.

BUILT FOR TOUCH
• An offset cursor with a loupe shows exactly where a point will land, so your finger never hides it.
• Generous snapping to points, curves, midpoints and the grid, with horizontal, vertical, parallel and perpendicular inference as you draw.
• Exact sizes come from typed dimensions on a finger-sized keypad, never from how steadily you can hold your hand.
• Handles stand clear of the geometry they change. Drag an extrude and watch it grow live.
• Select something and the tools that apply appear right next to it.
• One finger draws and picks, two fingers orbit, pan and zoom. Everything works without an Apple Pencil.

REAL SOLID MODELLING
• Sketch on the base planes, on any flat face, or on construction planes offset from a face or through three points.
• Lines, rectangles, circles and arcs, trimming, and a constraint solver with length, radius, distance and angle dimensions.
• Extrude (new body, add, cut, intersect, symmetric, through all), revolve, fillet, chamfer, shell, union, subtract and intersect.
• Move and rotate bodies, linear and circular patterns, mirror.
• Exact boundary representation geometry: planes stay planes and cylinders stay cylinders, ready for manufacturing.

A HISTORY YOU CAN EDIT
• Tap any feature to reopen it with its values, suppress it, or delete it with a warning about what depends on it.
• Roll the model back to any step to see how it was built.
• If an edge or face a feature refers to disappears, the feature says so and lets you pick a replacement instead of silently guessing.

FILES
• Import STEP files and keep working on them.
• Export STEP for other CAD systems and STL or 3MF for 3D printing.
• Documents live on your device. No account, no tracking.

CADsmith is built on the Open CASCADE Technology geometry kernel, used in professional CAD for decades, so the parts you make here open cleanly everywhere else.