> Also an app lets you require a user to sign a ToS once after installation without requiring accounts. For a website it's not as seamless.

Huh? I don't think I've ever visited a purely informational website (like this one apparently is) that required me to sign a ToS just to view it. You just click the link, read whatever information you came for, and leave when you're done. That's far more "seamless" than having to install an app before you can do anything.