You are downloading the SmartAlgebra XAP file v126.96.36.199 for Windows Phone. SmartAlgebra is a free and useful Education app: Smart Algebra builds graphs of any complexity (including the implicit functions) in polar and Cartesian coordinate systems, quickly draws the image ... You can now download the offline XAP file to install & try it.
Download Locations for SmartAlgebra 188.8.131.52 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 SmartAlgebra XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.