Are you an Android user who works with 3D design and printing? If so, you know the importance of having a reliable STL file viewer app on your device. Whether you're reviewing CAD files, exploring 3D models, or preparing files for 3D printing, having the right app can make all the difference. Here are some of the best STL file viewer apps for Android that you should consider:

1. STL View 3D: This app is a simple and easy-to-use STL file viewer that allows you to open and view 3D models directly on your Android device. With support for standard STL and OBJ file formats, you can easily rotate, pan, and zoom to inspect every detail of your 3D design.

2. GOM Inspect: GOM Inspect is a powerful STL file viewer and 3D inspection software that offers advanced measurement and analysis tools. It's perfect for engineers, designers, and anyone working with complex 3D models. The app supports various CAD files and provides precise measurement capabilities for accurate 3D analysis.

3. 3D Viewer: This app is a versatile 3D model viewer that supports various file formats, including STL, OBJ, and PLY. With a user-friendly interface and intuitive controls, you can easily navigate through your 3D models and showcase your designs on the go. The app also offers features like cross-section view and measurement tools for detailed inspection.

4. 3D CAD Viewer: For professionals working with CAD files and 3D models, 3D CAD Viewer is a comprehensive solution for viewing and analyzing complex designs. With support for STL, STEP, IGES, and other file formats, you can collaborate with your team, annotate models, and perform precise measurements directly from your Android device.

5. MeshLab: MeshLab is an open-source STL file viewer and mesh processing tool that allows you to visualize and edit 3D models with ease. While the app offers advanced features for mesh editing and cleaning, it also serves as a reliable STL file viewer for reviewing 3D designs on your Android phone or tablet.

Whether you're an engineer, architect, designer, or 3D printing enthusiast, having a reliable STL file viewer app on your Android device is essential for reviewing and interacting with 3D models. These recommended apps offer a range of features to suit different needs and workflows, making it convenient to view and manipulate CAD files anytime, anywhere.