You are downloading the Instatic XAP file v220.127.116.11 for Windows Phone. Instatic is a free and useful Social app: Detect Instagram and Twitter unfollowers and more!Inst@tic is the first and most fully featured Instagram statistics app for Windows 10. ... You can now download the offline XAP file to install & try it.
Download Locations for Instatic 18.104.22.168 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 Instatic XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.