Hey There! If Mineplex was going to have an app, it'd just likey be the website in the actual app itself, as I see absolutely no problem with the exising Xenforo website, it's fast, responsive and has more features than the previous Enjin site. As I believe an app like this would be pointless developing and publishing on the respective markets (Google Play, Apple App Store) I believe a good solution for you would be to bookmark, or favourite the Mineplex page(s) you visit most often. That way, you won't have to keep typing in web addresses. You can even link bookmarks to your home screen on select Android devices running Android 5.0+ Let me know if this was helpful, and have an awesome day!