unity – In need of a mobile friendly Json serializing library

I’m having difficulties serializing with the built in JsonUtility with serializing lists. I eventually figured out this just isn’t possible with its limited capabilities. As much as I’d like to use Newtonsoft, I cannot use that either because this is a mobile game, and from what I understand it doesn’t work on Android or iOS. Does anyone have any suggestions on what I can use, because I don’t want to have to use hacky solutions to get these lists in and out of Json.