I just got this app yesterday and haven’t had the chance to use it a lot yet, but I listened to 5 or 6 of the lessons for N5 level and was pretty impressed. The audio can be sorted by level, and as far as I’ve seen each clip consists of a conversation between 2 people. The audio quality good, and there are 100 audio clips for JLPT N5 level alone. Each clip covers a different grammar point or vocabulary group (for example, talking about time). There’s a transcript so you can read along as you listen, and you can show or hide furigana over the kanji. There seem to be very few apps specifically for Japanese listening practice, and this one is pretty well laid out, has a large selection of audio clips, and has good, clear audio. The app has other features for learning Japanese, including video skits and videos on grammar concepts, although I haven’t explored much other than the audio features yet.