You are downloading the MineChat XAP file v18.104.22.168 for Windows Phone. MineChat is a free and fun Action & Adventure game: Connect to online Minecraft servers on your mobile device. You can chat and send commands just as if you are using the Minecraft client. Send ... You can now download the offline XAP file to install & try it.
Download Locations for MineChat 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 MineChat XAP file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.