@micahbp we maintain a list of tested apps we consider essential to a core phone experience over here and will keep adding to it https://puri.sm/posts/the-librem-5-application-compatibility-chart/ but you have access to most of the Debian ARM repo which will work in desktop mode if the phone meets the min hardware specs. I am personally really excited to use the Librem 5 as my only work and mobile device. Mobile app support comes down to whether the app developer implemented a responsive UI e.g. Fractal and other GNOME apps.