You are downloading the QReader XAP file v220.127.116.1100 for Windows Phone. QReader is a free and useful Productivity app: QReader is an App designed to read the electronic stamp (QR Code) that is affixed to documents digitally created, and later printed. The App, simple ... You can now download the offline XAP file to install & try it.
Download Locations for QReader 18.104.22.16800 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline QReader XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.