Comment by worble

Keepass is just a single file, you can share it between devices however you want (google drive, onedrive, dropbox, nextcloud, syncthing, rsync, ftp, etc); as long as you can read and write to it, it just works. There are keepass clients for just about everything (keepassxc for desktops, keepass2android or keepassdx for android, keepassium for iphone).