Yeah DuChinese is I think the premier Chinese graded reader app right now. We also have the tap-to-lookup and make-flashcard-from-content flows (unfortunately only in our system for now, haven't build flashcard import/export yet). The thing we have that they don't is the ability to generate content about whatever subject you want (which can help make it much more personally interesting)

Also while naming quality resources I should also mention [Pleco](https://www.pleco.com/) - it's _definitely_ the best Chinese dictionary app - highly recommended.