You are downloading the Hotspot XAP file v126.96.36.199 for Windows Phone. Hotspot is a free and useful Productivity app: Hotspot is the app to support login to hotspot (public wireless LAN). Before registering the ID and password that automate hotspot login ... You can now download the offline XAP file to install & try it.
Download Locations for Hotspot 188.8.131.52 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Hotspot XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.