You are downloading the Bitcoins AppXBundle file v2018.525.957.0 for Windows Phone. Bitcoins is a free and useful Productivity app: Earn Free Bitcoins with this App. Navigate to Faucets and Earn "Claim" hours free Bitcoin, Bitcoin Cash, Ethereum, Dashcoin, Primecoin, Litecoin, ... You can now download the offline AppXBundle file to install & try it.
Download Locations for Bitcoins 2018.525.957.0 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 Bitcoins AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.