WoS holds your keys so you are trusting them not to steal from you. They have the most liquidity compared to other lightning wallet apps I’ve tried so it’s very convenient to use. Just don’t keep large amounts on it.

well, you own it until WoS decides to use your wallet keys to steal your sats. but you can always send all the sats to your own LN wallet or even send it to a onchain wallet. just hit the send button in yout WoS wallet and check out the options.

which part confuses you?