CashU feels and behaves similar to LN. You can send and receive payment to/from LN flawlessly. It's very simple actually.
Yes. I kinda get that. But... The use of it seems way too complicated for me to want to bother with.
Discussion
I've yet to see anything that is as simple as installing WoS and zapping.
Believe it or not, it's just as simple. In addition, unlike WOS, it integrates with nostr.