A user device receives audio data of a user reading aloud a displayed portion of an ebook, and converts a portion of the audio data to spoken-text data. The user device determines one or more similarity scores based on a comparison between the spoken-text data and text data associated with the displayed portion of the ebook, and ranks the one or more similarity scores to determine a reading location in the text data that corresponds to the spoken-text data. The user device determines a pronunciation score using the spoken-text data and pronunciation data associated with the text data at the reading location. The user device performs an action based in part on the reading location and the pronunciation score.