I have Nextcloud running on a Raspberry PI along with a dozen other services on yunohost.org. Nextcloud automatically backs up my family's contacts, calendars,

I have Nextcloud running on a Raspberry PI along with a dozen other services on yunohost.org. Nextcloud automatically backs up my family's contacts, calendars, notes, tasks, photos, files, passwords, bookmarks, phone locations and more. If you want to backup the APK's check out Seedvault. I am personally fine manually reinstalling APK's if/when needed so have not tried Seedvault yet.