You are downloading the Tumbling AppXBundle file v2016.827.545.0 for Windows Phone. Tumbling is a free and useful Social app: Latest stable application for browsing Tumblr blogsWith Live Tiles and social sharing.Only the most important: * Browse posts by ... You can now download the offline AppXBundle file to install & try it.
Download Locations for Tumbling 2016.827.545.0 AppXBundle file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppXBundle File To Install It Any More.
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Tumbling AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.