Open3D: STL & 3D Model Viewer
No in-app products collected for this app.
| Rating | |||
|---|---|---|---|
| United States | 20%3 | 5.00 | |
| United Kingdom | 13%2 | 5.00 | |
| India | 13%2 | 5.00 | |
| Japan | 13%2 | 5.00 | |
| China | 7%1 | 5.00 | |
| Netherlands | 7%1 | 4.00 | |
| Russia | 7%1 | 5.00 | |
| Saudi Arabia | 7%1 | 5.00 | |
| Turkey | 7%1 | 5.00 | |
| Vietnam | 7%1 | 5.00 |
Description
Open3D Viewer is the fastest free 3D model viewer for STL, GLB, OBJ, FBX, STEP, DXF, USDZ, PLY, 3MF, GLTF, IGES, DAE and 3DS files. Open any 3D file in seconds, view it in AR with Apple Quick Look, and check it for 3D printing — no account, no sign-up, no cloud upload. Your files never leave your iPhone or iPad.
Whether you're a 3D-printing hobbyist checking an STL before slicing, a 3D artist previewing a GLB or FBX, or a CAD user opening a STEP or DXF, Open3D Viewer opens it instantly — without the paywalls and login screens other 3D viewers force on you.
SUPPORTED 3D FILE FORMATS
Mesh: STL, GLB, GLTF, OBJ, PLY, 3MF, FBX, DAE, 3DS, USDZ
CAD: STEP / STP, IGES / IGS, DXF
A 3D VIEWER THAT DOES THE BASICS RIGHT
Open files from Files, email, downloads, or any "Open with" menu
Smooth orbit, pan and zoom touch controls
Render modes: solid, wireframe, X-ray, textured, matte
Wireframe overlay — see the geometry on top of the rendered surface
Preset camera views (front, side, top, perspective)
Light and dark themes
5 background colours + 6 HDRI lighting environments (studio, sunset, dawn, dusk, dark, white)
Play built-in animations
View 3D models in AR via Apple Quick Look (USDZ)
Capture a screenshot or a rotating GIF and share it
Recent files with auto-generated thumbnails
Full model specs: triangle count, vertices, materials, textures, bounding box
BUILT FOR 3D PRINTING
Print-readiness check: manifold / watertight detection, overhangs, wall thickness
Bed-fit check for popular printers (Bambu A1, Prusa MK4, Ender 3, Bambu X1C)
Rough weight, filament length and cost estimates
Measure distances on the model
Cross-section / clipping plane to inspect interiors
Scale and resize tool
Convert and export between GLB and STL
LOCALIZED
The interface automatically follows your device language. Currently available in English, German, Spanish, French, Portuguese, Hindi, Japanese, and Chinese.
NO ACCOUNT. NO CLOUD. NO NONSENSE.
No sign-up, ever
100% on-device. Works offline.
We never read, scan, or upload your files
We don't track which files you open
The STL viewer and GLB viewer that makers, 3D artists and engineers actually want: clean, fast, and local.
Measurements and print-readiness figures are estimates, not a replacement for a slicer or proper measuring tools. See the in-app Disclaimer.
Open3D Viewer is an independent app and is not affiliated with the Open3D open-source library at open3d.org. All trademarks belong to their respective owners.
Privacy policy: https://open3d.app/privacy.html