This app is meant to allow the user to read Pali Buddhist texts with side-by-side English translations, including the four main nikayas and the Dhp and Jataka commentaries as well as the Visuddhimagga.
The app is useless by itself. In order to be useful, it requires an archive of Pali and English texts placed on your SD card. An example of such an archive is here:
Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.