Reading news in Japanese, you can toggle helping kana (furigana) per JLPT level, disable kanji, use dark mode, play relaxing music, play videos, get instant translation, get word dictionaries and kanji draw order and favorites, text voiceover with speed customization playing in the background while using other apps with a choice of voices, examples of sentences, grammar, JLPT level tests, flash cards… and so much more. Having used a ton of apps since the beginning of the AppStore I am impressed by how many functionalities this app has while still remaining quite simple and not visually overloaded. Amazing job!