When this app launched, you will see the Nīlakaṇṭha Dhāraṇī as read in Vietnamese displayed on the screen as sentences. If you want to know the meaning of each numbered sentence, just touch that sentence, the meaning (in Vietnamese) will pop up.
Features of "Uncle Dai Bi" app compact. When the app runs, the screen will display all 84 sentences in the Great Compassion and you just need to drag the screen up to read. If you want to understand the meaning of a mantra, just "touch" that sentence will show the meaning.