The app itself is alright for study purposes, but the use of English where kana, or at the very least romanization, could be used is annoying. As someone who is seeking a more immersive experience, being forced to think in English detracts from my ability to learn, and having an option to use kana but having a button for English translation would solve this. I need to reduce my reliance on English, and being forced to see English does not help.