You are downloading the Lumia storage check beta XAP file v188.8.131.52 for Windows Phone. Lumia storage check beta is a free and useful Productivity app: Get this app to visualize the use of phone storage and to free up space by clearing some temporary files. Note that this is a beta version of the ... You can now download the offline XAP file to install & try it.
Download Locations for Lumia storage check beta 184.108.40.206 XAP file
Note: To install it manually from an SD card, you should choose one of the server location above to get the offline Lumia storage check beta XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.