This app has an audio for each of the 5 Stages of the method, so you can listen to how the words are pronounced and learn the correct intonation. This is an excellent aid for those who have trouble reading or listening, as the audio will help them to learn the correct pronunciation.

The app also has a built-in text-to-speech function, which can read the text aloud.

You can set the audio speed to either slow or fast, depending on how much you want to linger over each word. You can also choose to skip to the next or previous word.