STL Viewer: 3D Model & 3MF

Name: STL Viewer: 3D Model & 3MF
Author: Alper Vural

Open OBJ & GLB files in AR

Free · Designed for iPad. Not verified for macOS.

Age Rating

4+
Years
Category

Developer Tools
Developer

Alper Vural
Language

EN
+ 16 More
Size

28.5
MB

Free 3D viewer for 3D printing: open STL, 3MF, OBJ and GLB, measure parts, estimate filament and print time, and see them in AR. Offline, no account, no subscription. STL Viewer is a free, offline 3D model viewer for iPhone and iPad. It opens STL, 3MF, OBJ, PLY, OFF, 3DS, GLB and glTF files, measures them, estimates the print, shows them in AR at real size and converts them to STL. Your models never leave your device and no account is needed. AT A GLANCE • 8 file formats: STL, 3MF, OBJ, PLY, OFF, 3DS, GLB, glTF • Works fully offline, with no upload and no sign-up • Free: no subscription and no in-app purchase • No pop-up, timed or full-screen ads; at most one small banner • 17 languages, on iPhone and iPad VIEW IN AR AT REAL SIZE Place your model on a real desk or floor with AR Quick Look and see its true size before you print it. The camera is used only while AR is open. MEASURE AND ESTIMATE THE PRINT • Measure the distance between any two points, in millimetres • See dimensions, volume, surface area and triangle count • Print estimate: weight, filament length, print time and cost, by printer class, material (PLA, PETG, ABS, ASA, TPU, Nylon), layer height, infill and walls • Cut through the model with a section view CONVERT AND EXPORT TO STL Turn an OBJ, 3MF, PLY, OFF, 3DS, GLB or glTF model into a binary STL in millimetres, ready for any slicer. Every triangle of the source is kept, even when the on-screen preview is simplified. INSPECT EVERY DETAIL • Orbit, pan, zoom and fit to screen • Shaded or wireframe, perspective or orthographic • Front, back, left, right, top and bottom views from the view cube • Change the colour and the surface look: plastic, glossy, wood, stone or carbon SHARE • A rotating 360° GIF • A 9:16 video for stories • An STL copy, only when you choose WORKING WITH 3MF 3MF is the format most modern slicers save. STL Viewer reads the geometry inside a 3MF so you can check a part before printing, with real-world units from the file. Modifier meshes and negative volumes are left out, so you see the part itself. A 3MF that holds only print data, such as G-code, says so instead of opening empty. LOCAL AND PRIVATE Models are processed on your device. STL Viewer does not send model files, filenames, paths, geometry or dimensions to any cloud service, advertising provider or analytics platform. WHAT IT DOES NOT DO STL Viewer is for viewing, measuring, sharing and STL export. It does not edit, repair, slice or print models. Textures, materials and animations are not loaded. Native CAD formats (STEP, IGES, SOLIDWORKS, Fusion) need to be exported to STL, OBJ or 3MF first. QUESTIONS AND ANSWERS How do I open an STL file on iPhone or iPad? Tap Open file in STL Viewer, or choose STL Viewer from Open With or Share in the Files app. Is STL Viewer free? Yes. There is no subscription and no in-app purchase. At most one small banner appears after a model is ready. Does it work offline? Yes. Opening, measuring, AR and export all run on the device without an internet connection. Can I open a 3MF from Bambu Studio, PrusaSlicer or Cura? Yes. The part's geometry opens with its real units; print settings and plates are not read. Can I see an STL in AR at real size? Yes. Tap the AR button to place the model in your room at its real size. How do I measure an STL on iPhone? Open the model, tap the ruler, then Measure distance, and tap two points on the model. Can it estimate filament and print time? Yes. Print estimate shows weight, filament length, time and cost from the part's volume and your printer class, material and settings. It is an estimate, not a slicer result. How do I convert OBJ, 3MF or GLB to STL on iPhone? Open the model, tap Export, then Share as STL. How do I open a GLB or glTF file on iPhone? Open it like any other model. glTF files must keep their buffers embedded; use GLB if yours has a separate .bin file. Are my files uploaded anywhere? No. Models stay on your device.

Ratings & Reviews

This app hasn’t received enough ratings or reviews to display an overview.

• Opens PLY, OFF, 3DS, GLB and glTF too. • Export any model as STL, at full detail. • See your model in AR at real size — it never leaves your iPhone. • Share a 9:16 video for stories. • Tools fit small screens like iPhone SE, with a fold-away panel. • Fixed 360° GIF sharing and model framing on narrow screens. Your emails keep making this app better and better — thank you!

Version 1.7.0 1d ago

Data Used to Track You

The following data may be used to track you across apps and websites owned by other companies:
- Identifiers
Data Linked to You

The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
Data Not Linked to You

The following data may be collected but it is not linked to your identity:
- Diagnostics

Privacy practices may vary, for example, based on the features you use or your age. Learn More

Accessibility

Information

Seller: Alper Vural
Size: 28.5 MB
Category: Developer Tools
Compatibility: Requires iOS 15.0 or later.

iPhone
Requires iOS 15.0 or later.

iPad
Requires iPadOS 15.0 or later.

iPod touch
Requires iOS 15.0 or later.

Mac
Requires macOS 12.0 or later and a Mac with Apple M1 chip or later.

Apple Vision
Requires visionOS 1.0 or later.
Languages: English and 16 more

English, Arabic, Dutch, French, German, Hindi, Indonesian, Italian, Japanese, Korean, Polish, Portuguese, Russian, Simplified Chinese, Spanish, Turkish, Ukrainian
Age Rating: 4+

4+

Learn More

Contains
Advertising