STL Viewer: Measure 3D Files
Preview models before printing
Free · In‑App Purchases
Preview your first STL file for free. Subscribe to Pro to import more models, measure their overall size and share images with dimensions.
Open an STL file on your iPhone or iPad to inspect the model in 3D. Rotate, zoom and move around it, or switch to a standard view. You can preview your first imported file for free before subscribing.
STL Viewer Pro
• Import more models and keep them in a library on your device.
• Check the overall X, Y and Z dimensions.
• Choose the source units and convert measurements between millimeters, centimeters, meters, inches and feet.
• Share an image of the model with its overall dimensions.
Opening and viewing files
Open ASCII or binary STL files from Files or the system Open In menu. Show the mesh edges, switch to front, back, left, right, top or bottom views, and fit the model to the screen. The app supports files up to 50 MB and 1 million triangles.
Your files
STL Viewer displays and measures models on your device. It has no accounts or ads, does not upload models and leaves your original files unchanged.
STL files do not contain units, so you need to choose the units used to export the file. Measurements describe the model's axis-aligned bounding box. The app does not edit CAD files, slice models or check printability.
Subscriptions
Pro has monthly and yearly plans that renew automatically. Apple charges your Apple Account. To stop renewal, cancel at least 24 hours before the current period ends. Manage or cancel your subscription in App Store settings. If you already subscribe, you can restore purchases.
Privacy: https://stlviewer.vovaluka.com/privacy
Terms: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Ratings & Reviews
- This app hasn’t received enough ratings or reviews to display an overview.
The developer, Vladimir Lukashov, 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
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Vladimir Lukashov
- Size
- 10 MB
- Category
- Utilities
- Compatibility
Requires iOS 18.0 or later.
- iPhone
Requires iOS 18.0 or later. - iPad
Requires iPadOS 18.0 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- In-App Purchases
Yes
- STL Viewer Pro Yearly $24.99
- STL Viewer Pro Monthly $3.99
- Copyright
- © 2026 Vladimir Lukashov