I tested many apps, and Infuse was the only one that truly satisfied me. It plays absolutely everything on virtually every Apple device. iCloud sync is perfectly implemented and truly unique in its perfection. It's like playing on a single device. Dolby TrueHD and DTS are transcoded and passed through losslessly as PCM. Dolby Vision is output correctly, and the profiles not supported by Apple are converted to HDR perfectly, without any color cast or washed-out image. Kudos to the developers; this level of work definitely deserves a higher price.