Mangala Sutra, Rathana Sutra and Karaneeya Meththa Sutra are very important for buddhist and they chant and refer it in day to day life.
Pirith Chanting Audios, Pali Text and Sinhala Meaning for those 3 sutra dheasha are included in this Android App.
Mangala Sutraya, Rathana Sutraya and Karaneeya Meththa Sutraya