Fast STL Viewer APK for Android

Used Fast STL Viewer for Android?

Fast STL Viewer Analysis

AI Assisted Content · January 7, 2026

Not written by CNET Staff.

Fast STL Viewer is a free Android application designed for the viewing and manipulation of STL files, which are commonly used in 3D printing and modeling. This tool enables users to open STL files from various sources, including cloud storage and USB drives, making it a versatile option for accessing 3D models on the go. Users can interact with their models, examining details and making adjustments as needed, which can enhance the workflow for designers and engineers alike.

In addition to its viewing capabilities, Fast STL Viewer allows users to add new data to existing models or create entirely new models based on imported data. This functionality is particularly beneficial for those involved in 3D printing, as it facilitates easy archiving and sharing of 3D designs. The application supports a range of common file formats, ensuring compatibility with various design programs and enhancing its utility for professionals and hobbyists.

Fast STL Viewer APK for Android

Used Fast STL Viewer for Android?

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Full Specifications

GENERAL

Release: August 2, 2019

Latest update: January 7, 2026

Version: 2.41

OPERATING SYSTEMS

Platform: Android

Operating System: Android 15.0

POPULARITY

Total Downloads: 64

Downloads Last Week: 1

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Developer’s Description

By Fast STL Viewer

Binary and ASCII STL files / models 3d viewer for Android.

Binary and ASCII STL files / models 3d viewer for Android.

Key features:

1. Multiple files / models view support

2. Convenient view modes: shaded, wireframe, shaded + wireframe, points

3. Front and back faces are highlighted with different colors

4. Fast STL files / models loading

5. Big STL files / models support (millions of triangles)

6. Binary and ASCII STL files / models formats

7. Mesh boundaries / edges detection

8. Separate (unconnected) meshes / parts detection

9. Selection functionality (hold a finger on a model to select it)

9.1 To deselect a model hold a finger on the background

10. Display bounding box information in the status per selection

11. Invert normals in a selected STL-model

12. Delete a selected STL-model from the scene

13. Open STL-files directly from Gmail attachments, Google Drive, Dropbox, OneDrive via Fast STL Viewer

14. 3D Print with Treatstock option

15. The app internal file manager keeps track of 10 recently opened files for easy access

In-app purchases:

1. Configure the scene colors: model (face/wireframe/vertex) and background

2. Find the volume (cm3) of a selected STL part