You are downloading the Text to Speech TTS AppX file v18.104.22.168 for Windows Phone. Text to Speech TTS is a free and useful Books & Reference app: Text to speech TTS can read to you any text. You can type, copy & paste, or open text file to text area. You can selection English, Spanish, ... You can now download the offline AppX file to install & try it.
Download Locations for Text to Speech TTS 22.214.171.124 AppX file
To try to install it manually from an SD card, you should choose one of the server location above to get the offline Text to Speech TTS AppX file, move the file to your phone's SD card and then tap 'Install local apps' in the phone's App list.