# FoldForm: CAD for 3D Printing — Parametric parts, STL and 3MF > Parametric parts, STL and 3MF (iPhone/iPad app by SAMUEL AYERS.) - Source: https://appshunter.io/ios/app/foldform-cad-for-3d-printing/id6816439422 (this page in markdown: same URL + `.md`) - Developer: [SAMUEL AYERS](https://appshunter.io/developer/6816439424) - Category: Graphics & Design, Productivity - Price: Free with in-app purchases - Age rating: 4+ - Requires: iOS 17 · 64 MB - Languages: American English - Released: 2026-11-05 - Data updated: 2026-11-08 ## What is FoldForm? FoldForm is precise 3D CAD for makers and 3D printing, made for touch. Push and pull faces with a finger or Apple Pencil, sketch a profile and extrude it, and type exact sizes as you go. Every step stays editable. MODEL • Tap a flat face to see the part's size, then drag the arrow or type a new size; +5 or -5 changes it by that much. • Round and chamfer edges, shell a body to a wall thickness, offset faces. • Tap a hole's wall and type a new diameter. Delete a hole, fillet or chamfer and the faces around it close the gap. • Extrude sketch profiles (a distance, both ways or up to a face; as a new body, joined, or cut, also through everything), revolve them, or loft between shapes on different planes. • Sizes accept units and arithmetic: 25, 1in, 2.5cm, 20+5, (10+2)*3. SKETCH • Sketch on the ground, an origin plane, a construction plane or any flat face. • Line, rectangle, center rectangle, polygon, circle, arc, tangent arc and slot; trim, round a corner, offset, mirror and pattern. • Constraints (horizontal, vertical, parallel, perpendicular, equal, tangent, concentric, midpoint, symmetric, distances, angles) shown as small glyphs, and a "Fully defined" status. • Drag a line, circle or point to change a sketch; tap a size to type it. On a face, points snap to its corners, edge middles, center and holes, with a magnifier under your finger. BODIES • Move, rotate and align bodies, lay a face on the build plate, mirror and pattern (in a row or around an axis), union, subtract and intersect. • Construction axes and planes to rotate about, pattern around, mirror across, align onto or sketch on. • The Model panel lists every sketch, body and step: change a value later, suppress or delete a step. Everything can be undone. MADE FOR 3D PRINTING • A Hole tool with ISO clearance and tap sizes, counterbores and countersinks from M2 to M6, with a print allowance (0.2 mm to start with) so screws fit, plus heat-set insert holes. • Raised or engraved text on a face, for labels and version marks. • Measure a face's size, the distance or gap between two faces or edges, and angles. • Export STL or 3MF (millimeters; 3MF keeps each body a separate object) for your slicer, or STEP for other CAD programs. Import STEP files. YOUR FILES • Projects keep the full history, so sketches and steps stay editable after reopening. • Export opens the share sheet: send the file straight to your slicer app, AirDrop or Mail. Share a whole project the same way. • Projects are saved in FoldForm's folder in the Files app, exports in its Exports folder. Open projects and STEP files from the Files app or Mail. • A Home screen with your projects and their previews. • Unsaved work is kept safe in the background and offered again if the app closes. • When a step cannot be done, FoldForm says why in plain words, often with a size that works, and your model stays as it was. ON IPHONE AND IPAD • One app for iPhone and iPad. On iPhone the tools sit along the bottom and the value box docks where it covers nothing you selected; on iPad the full layout, also in Split View and Stage Manager. • One finger orbits, two fingers pan and zoom, a two-finger tap undoes and a three-finger tap redoes. A view cube shows how the view is turned; tap it to look from a side. • Apple Pencil on iPad and iPhone Duo: pen mode lets the Pencil draw and select while your fingers only move the view. • On iPhone Duo: closed, the phone layout; opened, the full layout on the inner display, with a larger canvas for your model. FREE TO START Every tool is free for one project at a time. A one-time in-app purchase unlocks unlimited projects on your iPhone and iPad. OPEN SOURCE, NO ACCOUNT FoldForm is open-source software (Mozilla Public License 2.0) using Qt, Open CASCADE Technology and PlaneGCS under the GNU LGPL. Source code, license texts, a user guide and a Windows version: github.com/SamuelAirs/openshape. No account, no advertising, no tracking: FoldForm collects no data. ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Unlimited Projects | $9.99 | one-time | ## Is FoldForm safe? Not enough ratings yet to assess FoldForm. ## Is FoldForm legit? FoldForm: CAD for 3D Printing has limited verification signals. The AppsHunter Legitimacy Score for FoldForm is 50 out of 100 points across 7 verification signals from App Store and developer data. ## Version history (last 2 releases) ### 0.3.1 — 2026-11-06 FoldForm 0.3.1, from the first sessions on iPhone Duo: • Select several faces at once and push them together; push faces into a part to cut or engrave it. • Five sample projects on Home to open, change and learn from: a lamp shade, a twisted vase, an electronics box, a phone stand and a honeycomb pen holder. • FoldForm fills the whole screen, with no black bars on iPhone Duo. • File > Open shows Home with every project, including those in folders. On iPhone Duo, open a file by sharing it to FoldForm from the Files app. • On iPhone Duo's inner display the value box docks at the edge, away from your part, and zooming and panning no longer jump. • Projects open in the background behind a card with a preview, and much faster. • A more finished look: menus with icons and shortcuts, and an icon for every tool. ### 0.3.0 — 2026-11-05 No release notes. --- *Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-11-08.*