The worst I've seen, or tried to use is my city's public transportation bus app here:
https://centro.org/service_schedules/mobile-app
Best would be ProxmoxVE's, here:
https://pve.proxmox.com/wiki/Main_Page
https://centro.org/service_schedules/mobile-app
Best would be ProxmoxVE's, here:
https://pve.proxmox.com/wiki/Main_Page