You are downloading the Countdown APPX file v18.104.22.168 for Windows Phone. Countdown is a free and useful Lifestyle app: "Countdown to all kinds of events in special ways! Such as: ""In 178,326 heartbeats!"" OR ""In precisely 184,072 ... You can now download the offline APPX file to install & try it.
Download Locations for Countdown 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 Countdown APPX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.