Pika is a GUI for Borg.

Rsync is doable, but it’s not great since you essentially only have one backup set. If a file gets corrupted and you don’t notice before the next backup is done, you won’t be able to restore it. Borg’s deduping is good enough to keep lots of history - I do daily backups and keep every day for the past two weeks, every week for the past three months, and every month indefinitely (until I run out of space and need to prune it). Borgmatic handles pruning the backups that are out of retention.