You are downloading the Altitude XAP file v188.8.131.52 for Windows Phone. Altitude is a free and useful Productivity app: Update 184.108.40.206- An issue related to crashing of app on some devices has been fixed now. Thanks for your patience.A comprehensive ... You can now download the offline XAP file to install & try it.
Download Locations for Altitude 220.127.116.11 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 Altitude XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.