yeah apparently, i didn't really notice at first but it says it here:

Wallet of Satoshi is a mobile app for iOS and Android that lets you send and receive Lightning payments.

It is a zero-configuration custodial wallet with a focus on simplicity and the best possible user experience. It can be downloaded using the links at walletofsatoshi.com

Simply download and install the app and you are on the Lightning Network!

But is there a non-custodial wallet where you can buy bitcoin inside of it and "Simply download and install the app and you are on the Lightning Network" ?