You are downloading the Anonymous Calls XAP file v18.104.22.168 for Windows Phone. Anonymous Calls is a free and useful Business app: This app allow to making phone calls in anonymous. It just adds #31# before the number to call. It's useful because when you select a number from the ... You can now download the offline XAP file to install & try it.
Download Locations for Anonymous Calls 22.214.171.124 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Anonymous Calls XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.