This app includes 550 listening lessons. Each lesson comes with high quality audio, transcript and quiz. These lessons are divided into: 5 levels of difficulties: A2, B1, B2, C1, C1. 4 speeds of reading: Medium, Fast, Slow, Very Slow. 12 topics: Family, Food, Stories, Self., Business, Life Style, Education, Travel/Leisure, Literature, Religion/Phil., History/Polit.