Thanks for your attention. iOS app on macOS could not support native resoluion. Instead, it only have a scale option which is not beautiful on a bigger screen.
This app is promoted by many KOL in China’s big video platform Bilibili, and a lot of users like it very much. This is a video: https://www.bilibili.com/video/BV18z4y1772c/
Look forward to a native version!