OpenShape3D vs Axialmark

openshape3d is a direct-modeling CAD app built for touch. Sketch a profile, pull it into a solid, and keep cutting, blending and patterning until the part is done — no desktop, no subscription server, no file conversion dance. Geometry is computed by OpenCASCADE, the same open-source B-rep kernel used in professional CAD. Extrudes, primitives and booleans produce exact analytic surfaces, so a cylinder stays a true cylinder instead of a faceted approximation. SKETCHING • Sketch on a world plane, on any flat body face, or on an offset construction plane pulled off a face • Line, rectangle, circle, arc, ellipse, polygon and text-as-outline tools • Endpoint, midpoint, centre, vertex and grid snapping — draw with Apple Pencil • Trim, move/rotate gizmo, construction geometry, and reusable symbols • A full 2D constraint solver: coincident, parallel, perpendicular, tangent, equal, concentric, symmetric and more • Driving dimensions with inline arithmetic (type 25.4/2) pull geometry to value • The sketch tells you where it stands — fully defined, or how many degrees of freedom remain SOLIDS • Extrude a profile, or push and pull a face directly with automatic booleans: pull to add material, push to cut • Revolve, sweep along a chained path, loft through sections, and helix • Fillet and chamfer edges with live preview and drag-to-size • Shell a body hollow, with optional open faces • Union, subtract and intersect between bodies, computed off the main thread • Split a body with a plane or a sketch profile • Linear and circular patterns with ghost previews • Move, scale, rotate, mirror, translate point-to-point and align VIEWING • Orientation cube, six standard views, isometric and orthographic toggle • One finger orbits, two pan, pinch zooms — the camera never locks up • Section view that clips live against a plane, with a drag arrow and flip • Shaded, shaded without edges, wireframe with proper hidden-line removal, and X-ray • Marquee select with window/crossing semantics, and Select Through to reach a body buried behind others • Isolate to hide everything but the selection MATERIALS AND REFERENCE • Material presets — steel, aluminium, brass, plastics, rubber, wood — plus custom colour with metallic and roughness • Drop PNG or JPEG reference images onto any plane and trace over them MEASURE • Face area, body volume and bounding box on selection • Two-point distance with X, Y and Z deltas over snap points IMPORT AND EXPORT • Import STL and DXF • Export STL, OBJ, 3MF, GLB, USDZ and sketch DXF • Preview your model in AR with Quick Look

Axialmark is a high-performance 3D CAD and engineering model viewer for iPhone and iPad. With on-device geometry processing and Apple Metal rendering, Axialmark delivers precise inspection and fluid navigation for STEP assemblies, STL meshes, PLY point clouds, and other 3D engineering models. Whether you are in the workshop, preparing a client presentation, traveling, or working at your 3D printing desk, Axialmark helps you inspect and present 3D designs wherever you are. Key Features: • Precise CAD Geometry Inspect solid and surface models with clear feature edges and Hidden Line Removal (HLR) for technical viewing. • Metal-Accelerated Rendering Orbit, pan, and zoom through complex models with responsive, high-quality rendering. • Product Assembly Structure Tree Browse hierarchical assemblies, expand or collapse branches, isolate components, and see selections reflected in the viewport. • ViewCube and Camera Controls - Tap or drag the interactive ViewCube for standard orthographic and isometric views. - Switch between orthographic and perspective projection. - Use multi-touch orbit, pan, pinch-to-zoom, and Fit All framing. • Professional Display Styles Choose Shaded, Shaded with Edges, Wireframe, or Hidden Line Removal views. A reference grid supports spatial orientation. • Model Information Review bounding-box dimensions, triangle and face counts, file size, and unit information. • Private, On-Device Processing Open models from Files, iCloud Drive, AirDrop, and shared documents. Processing and rendering stay on your device. Supported Formats: - STEP / STP / STEPZ / STPZ - IGES / IGS - STL, PLY, OBJ - glTF / GLB - BREP, XCAF, VRML / WRL Download Axialmark to inspect, review, and present 3D engineering models on the go.