3D Kit: STL Viewer

CAD Model & Print Preview AR

Free · In‑App Purchases · Designed for iPad. Not verified for macOS.

Open, explore, and inspect 3D models on your iPhone or iPad. 3D Kit is a fast, intuitive viewer built for makers, designers, engineers, and anyone who works with 3D files. Drop in an STL, OBJ, USDZ, or 3MF file and see it rendered instantly. Orbit around your model with smooth turntable controls, zoom in to inspect fine details, and get a complete breakdown — triangle count, vertex count, dimensions, bounding box, file size, volume, and surface area. BUILT FOR 3D PRINTING Choose from popular printer bed presets or enter custom dimensions to see exactly how your model fits on the build plate. A floor grid gives you spatial reference, and real-time measurement overlays show width, height, and depth in millimeters — so you can verify scale before you slice. Whether you are checking a downloaded file or reviewing your own design exports, 3D Kit gives you a quick, reliable way to preview models without launching a full slicer or CAD application. SEE YOUR MODEL IN THE REAL WORLD Place any 3D model into your physical environment using augmented reality. Point your camera at a flat surface, tap to place, and walk around your model as if it were sitting right in front of you. AR mode is perfect for checking the real-world size of a print, showing a design to someone who does not use CAD software, or seeing how a model looks on your desk before committing to a print. Measurements work in AR too, so you can verify dimensions while viewing the model in context. MAKE IT YOURS Customize every aspect of the viewing experience. Change the object color, floor color, sky color, grid color, grid line width, and ruler line color. Choose from camera presets — front, back, left, right, top, bottom, and isometric — or orbit freely to find the perfect angle. All appearance settings persist across sessions. CAPTURE AND SHARE Take high-resolution screenshots or record smooth video walkthroughs. Export to your photo library, save to Files, or share directly to any app. Video recording works in both the standard viewport and AR mode. YOUR MODEL LIBRARY Import files from the Files app, AirDrop, email attachments, or any app that shares 3D files. 3D Kit organizes your models in a built-in library with quick access to recent files. Rename, delete, and manage your collection without leaving the app. Browse the included sample models to explore what 3D Kit can do, no files required. SUPPORTED FORMATS - STL (binary and ASCII) - OBJ - USDZ - 3MF KEY FEATURES - Instant 3D model rendering with smooth orbit controls - Detailed model info: triangles, vertices, dimensions, volume, surface area, file size - Printer bed presets or custom dimensions - Real-time measurement overlays in millimeters - Augmented reality placement on any flat surface - Customizable colors for object, floor, sky, grid, and ruler lines - Camera orientation presets for standard views - Screenshot and video capture in viewport and AR modes - Built-in model library with import, rename, and delete - Sample models included to get started immediately - Designed for iPhone and iPad 3D Kit is the fastest way to go from file to visual on iOS. No account required, no cloud uploads, no waiting. Just open a file and see your model. https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

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What's new in the 3D editor: • Mirror shapes across X, Y or Z from the Arrange menu. • Duplicate and Repeat: duplicate a shape, move it, then duplicate again to repeat the step. Great for quick arrays. • Print-safety warnings show when a shape sits off the print bed, sinks below it, or has an invalid size. • Projects keep a recovery copy, so you can get your work back if something goes wrong. • Rename shapes right in the inspector on iPhone. Fixes and improvements: • Opens more 3MF files, and ASCII STL files that start with a byte-order mark or blank lines. • Clearer messages when a model file can't be read. • Saving a model to Files now keeps it in your library. • Edit in 3D now tells you when a model is no longer in your library. • Better imports of large models when your device is low on storage.

The developer, Adapted Hub LLC, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Linked to You

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

    • Purchases
    • Identifiers
    • Usage Data
    • Diagnostics

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

The developer has not yet indicated which accessibility features this app supports. Learn More

Seller
Adapted Hub LLC
Size
35.4 MB
Category
Graphics & Design
Compatibility
Requires iOS 17.0 or later.
  • iPhone
    Requires iOS 17.0 or later.
  • iPad
    Requires iPadOS 17.0 or later.
  • Mac
    Requires macOS 14.0 or later and a Mac with Apple M1 chip or later.
  • Apple Vision
    Requires visionOS 1.0 or later.
Languages
English
Age Rating
4+
In-App Purchases
Yes
  • Pro Access Monthly $4.99
  • Lifetime Pro Access $29.99
Copyright
© Adapted Hub LLC (2026)