I'm disappointed in Unstoppable: this meant I couldn't make a (small) transaction yesterday when I wasn't at home, which is the only reason I have this wallet. Obviously I didn't bring my seed phrase with me, so I couldn't recover it. And Unstoppable itself allows me to create a backup, but not to export the seed or private keys.
Meanwhile, Unstoppable's LTC server is still stuck somewhere in February.
I think Cake wallet fits better what you are looking for.
It is also open source software and they support Litecoin better, plus they have advanced privacy feature for Bitcoin called silent payments.
If I am not mistaken they also support mweb addresses for litecoin, that is very good for privacy.