You are downloading the DjVu Reader AppXBundle file v2015.916.1315.0 for Windows Phone. DjVu Reader is a free and useful Books & Reference app: Djvu Reader is the only lightweight and quick application for viewing DjVu documents on Windows 10 devices. All you need in a DJVU reader. A ... You can now download the offline AppXBundle file to install & try it.
Download Locations for DjVu Reader 2015.916.1315.0 AppXBundle file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline DjVu Reader AppXBundle file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.