You are downloading the RepoTex XAP file v220.127.116.11 for Windows Phone. RepoTex is a free and useful Productivity app: RepoTex is a simple way to have with you all the basics of LaTeX.Symbols and tutorials, you'll find everything you need to understand the ... You can now download the offline XAP file to install & try it.
Download Locations for RepoTex 18.104.22.168 XAP file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline XAP 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 RepoTex XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.