You are downloading the Simple Calendar AppXBundle file v2016.124.1357.0 for Windows Phone. Simple Calendar is a free and useful Productivity app: "This program shows six months in one screen with Week Numbers. You can go Left or Right by clicking buttons or by swipe one month at a ... You can now download the offline AppXBundle file to install & try it.
Download Locations for Simple Calendar 2016.124.1357.0 AppXBundle file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Simple Calendar AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.