I think Cake wallet fits better for 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.
I just checked it, and it looks good at first glance. I may give it a try. Support for Monero is nice, I haven't had that on mobile since Coinomi stopped working.
Meanwhile, Litecoin is still stuck on Unstoppable Wallet.
Until you suggested Cake Wallet, I was thinking of just posting an encrypted seed phrase online. I may still do that (while well aware of the risks). I was at the point I considered asking for a LTC loan on Bitcointalk 3 days ago
