You are downloading the Grapher Calculator XAP file v184.108.40.206 for Windows Phone. Grapher Calculator is a paid and useful Education app: ★★★ Top 2 paid app in marketplace of USA!!! ★★★ ☆☆☆ Fully support WP8 and all ... You can now download the offline XAP file to install & try it.
Download Locations for Grapher Calculator 220.127.116.11 XAP file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Grapher Calculator XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.