It already exist. It’s called Getcurrent.
Discussion
It says power of bitcoin right on the landing page. This alone may scare off 99% of the people 😔
Ok, but I think it’s the closest you will get in terms of ease of on-boarding.
I don’t think you can play around with relays but it seems to be as straightforward as you can get for now.
I’ve reviewed the app once already, will take a fresh look later. I sent the video to the team but didn’t hear anything back.
As someone who didn’t used lightning till nostr, built in wallets feel like a scam, or at least make it seem like the intention is less about decentralization and more about proselytizing bitcoin.
I think built in wallets are ok, they just should be opt in, you should have the option to link any wallet you like, and then it’s presented as a convenience.