Wallet of Satoshi is a mobile wallet for android and IOS, which aims to be as easy as possible to use the lightning network, i just tested it with 20 satoshi's, and it worked like a charm.

But how does it work? It says that when i deposit bitcoin into the wallet it will handle the rest automatically, and i can't seem to add nodes, so that would mean I'm using their node? Is such a thing a problem? I mean if a lot of people started using their wallet would that cause some centralization?