I would recommend Blink (formerly BItcoinBeachWallet) available for ios and android and app gallery https://www.blink.sv/
It says that Blink is unavailable some countries app stores, including the US

I like that they are supporting Stablesats, USD equivalent that is much better way of holding some kind of stablecoins but without having to deal with shitcoins.
So far I didn't try it but I might give it a go to see how it works, but if I understand correctly this is custodial LN wallet.
You are correct it's a custodial bitcoin ln wallet gaining popularity in latam. Not available in U.S due to Blink not operating (having a legal company set up in the U.S) regulation is not clear for them to want to hop in plus its costly and there are recent U.S companies shutting down like
, so it appears the U.S might be losing some ground here.