Fast STL Viewer – Convenient view modes

[App] Fast STL Viewer

Fast STL Viewer  Problem:

Please note that Samsung’s “My Files” file browser has a known bug and does not open STL files directly in the app because it fails to associate the STL extension with the right app.


Install any other third party file manager from the Google Play Store to be able to open STL files directly while browsing.

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
3. Disable/remove the Banner Ads

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Fast STL Viewer user reviews :

Opens stl file from e-mail, opens stl file from Dropbox… but does not open stl files from internal storage nor WhatsApp… When I try to open stl file with File Explorer (My File, on Samsung S7), I’m getting the message “Unable to open the file – you don’t have any apps that can open this type of file…” Why is that?

excelent,does exactly as it says in the description loaded in a fraction of a second 3.5million triangles of a medical model i had locally stored on my phone.GG DEVS!

Exactly what the description says! Very easy to use and performs smoothly. It would be cool to have a tool that let’s you move pieces around to slice/assemble multiple files. If this option was added, I’m sure many people would appreciate the ability. Keep up the good work devs!
  • Fast STL Viewer
  • Thank you for the great feedback!
Pretty much surprised by its functionality, I mean it in a positive way. Very helpful to view STL files send to me to analyse when I’m on the move. Going to subscribe, thes app developers deserves all support they can get. Bytheway, I use Dropbox to store my ‘STL’ files, my STL files open directly from my Dropbox into the App, on my Samsung phone ;).
  • Fast STL Viewer
  • Awesome review! Thanks!
Superb app , much useful , and very easy and great experience with this one ,thanks for the developers for designing such a clear and clean app
  • Fast STL Viewer
  • Thank you for the great feedback!

Amazing stl file viewer, download for sure, One request to developers, add the different shade of objects as an option

Very fast, performant, with good visualisation effects.
  • Fast STL Viewer
  • Thank you for the feedback!

Very useful application for 3d files rotation.

Basic viewer that works fine. Anything more than that you have to activate with a subscription. I would have no problem paying to activate more features, but a subscription for that is BS.

Great software, but why no option to buy outright? I don’t like the idea of being on the hook indefinitely for basic features and am happy to spend a little more to avoid that while still supporting the devs.

This app is easy and straight forward. The developer(s) appear to be actively engaged in the bugs reported and found. Like mentioned in the notes the only “bug” was for to Samsung’s file browser not understanding app associations. The free version does what i want but i will consider buying the paid version to help the developer.
  • Fast STL Viewer
  • Awesome feedback! Thanks!
It’s Okey, but could be better explained; for example using que tool boundaries it shows on the bottom right corner what appears to be the max dimensions, is this mm, cm or what. This is helpful
  • Fast STL Viewer
  • Hey. Thanks for the feedback. STL files are unitless. Please read more here
Great app. Simple, easy to use, and provides most basic needs for STL file reading.
  • Fast STL Viewer
  • Thank you for the great review!
Haven’t had any issues at all. Very useful for checking files you download while on the go or if your like me and don’t like to sit at computer all day.
  • Fast STL Viewer
  • Great feedback. Thanks!

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