Jiuno Yan
Does everything you didn't know you needed, honestly a very impressive app overall. I just wish there were a way to change the font color (eg. to black) for more contrast. There's a few different "themes" but they're all still low contrast, such as medium gray characters on light gray background. Otherwise, overall a very smooth experience.
Jack Bilton
Great reading app, very simple, love that a record is kept of all the words you tap on in the text so you don't need to bother fabouriting words to review where you struggled at the end.
Taylor Bos
This app is incredibly useful for improving your Chinese reading levels. Not only does it have a selection of online novels ready for you to read, it also allows you to search for novels that they don't have. It's able to parse the website contents and present it in the nice reader format with definitions a tap away. I used it to find a more niche novel and it worked great. It remembers your progress too which impressed me.