STP Viewer vs OpenShape3D

With our advanced 3D rendering engine, you can open large and complex computer-aided design (CAD) files seamlessly. The app acts as an all-in-one CAD file reader, allowing you to access critical data whenever and wherever you need it. ### Why Choose This STP & STEP Viewer? Google and web searches often show that finding a lightweight mobile tool to view STEP files can be challenging. Our app solves this by focusing purely on speed, rendering accuracy, and an intuitive user interface. It works flawlessly as both an STP viewer and a STEP viewer, ensuring compatibility with standard ISO 10303 files exported from any modern CAD ecosystem. ### Key Technical Features: • Comprehensive STP & STEP Support: Fully optimized to read and render both .stp and .step file extensions. • Fluid 3D Navigation: Experience smooth orbiting, panning, and pinch-to-zoom gestures even with high-polygon assemblies. • Instant File Loading: Open CAD models directly from your iOS Files app, iCloud Drive, email attachments (Gmail, Outlook), or communication tools like Slack and WhatsApp. • Structural Integrity: View complex mechanical assemblies and nested components with high visual fidelity. • Offline Accessibility: Fully functional without an active internet connection. Perfect for secure facilities, remote fields, or offline workshops. • Battery & RAM Efficient: Engineered using modern mobile graphics frameworks to prevent overheating and excessive battery drain. ### Cross-Platform Ecosystem Compatibility: This mobile 3D viewer supports files generated from all major CAD software suites. If your workflow involves files exported from any of the following platforms, our app is your ideal mobile companion: • SolidWorks & Autodesk Fusion 360 • AutoCAD & Autodesk Inventor • CATIA & PTC Creo • Rhino 3D & Siemens NX • TurboCAD, FreeCAD, and more. ### Tailored for Engineering Professionals: • Mechanical & Aerospace Engineers: Quickly review part tolerances and geometry during team alignment meetings. • CNC Programmers & Machinists: Verify 3D model structures directly next to the machine without running back to a computer. • Sales & Project Managers: Showcase highly detailed interactive 3D prototypes to clients during sales pitches and presentations. • 3D Printing Enthusiasts: Check standard CAD exports before sending them to slicing software. ### Flexible Premium Plans: Gain unlimited access to advanced viewing features, large file processing, and a completely ad-free workspace. Choose the subscription model that aligns with your professional workflow: • Weekly Plan: Ideal for short-term design reviews, sudden project deadlines, or quick freelance jobs. • Monthly Plan: Great for ongoing manufacturing sprints, contract work, and mid-term engineering projects. • Yearly Plan: Our best-value option providing year-round, uninterrupted access for dedicated CAD professionals and engineering teams. Privacy Policy: https://sites.google.com/view/stepviewerpolicy/home Terms of Service: https://sites.google.com/view/stp-viewer-appterms/home

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