You are downloading the Super Checkin AppX file v18.104.22.168 for Windows Phone. Super Checkin is a free and useful Social app: Look for nearby places easily with Super Checkin.With SensorCore equipped devices like the Lumia 630, this App can help you remember where ... You can now download the offline AppX file to install & try it.
Download Locations for Super Checkin 22.214.171.124 AppX file
Important Notice: Now Due To Unspecified Limitations, You Can Not Use The Offline AppX 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 Super Checkin AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.