You are downloading the Aristea AppX file v220.127.116.113 for Windows Phone. Aristea is a free and useful Social app: Aristea is an app to enjoy the Twitter.Timelines displayed in multiple column. You can see the timeline, mentions, lists at once.And, ... You can now download the offline AppX file to install & try it.
Download Locations for Aristea 18.104.22.1683 AppX file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Aristea AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.