The Latin Reader app for Android (v1.17) does not store any personally-identifiable information (PII) from users. It does not collect any sensitive user data. The app also does not share any data with other apps or services.
The app does store information about user preferences when using the app. Specifically, it stores information about the user's preferred text size, number of lines of text to display of a text, and whether the user prefers to use arrow buttons for moving forward and backward in the text.
The app also stores the user's reading position in texts.