A free app for Android, by Autodesk Inc..
A360 is the ideal tool for viewing and editing Autodesk CAD models on your mobile device. With the app, you can view 2D and 3D CAD models as well as all file formats supported by Autodesk, including: AutoCAD (DWG), DWF, Inventor (IPT, IAM, IDW), Revit (RVT), SolidWorks (SLDPRT, SLDASM, ASM), Navisworks (NWD, NWC), Fusion 360 (F3D), and more.
A360 supports collaboration for multiple users. This means you can invite others to view, comment, and make changes to your CAD model simultaneously.
A360 also supports offline data access. This means you can open, edit, and save your data anytime, anywhere, even if you don’t have an internet connection.