May I suggest explaining Toshi as an application for crypto currency programs, where transcations happen seamlessly to the user.
MetaMask and similar apps are a PITA to use, while Toshi, although limited at the moment, can be that one app to rule them all.
“Browser” is such an outdated concept from the 90s, who cares? If crypto world takes off as promised, we will need a whole new digital world to contain it.
In fact, crypto world will have to become the new status quo, where the underlying layer won’t matter to the end user. You will just use “apps” and somehow, in the background, they are going to be secure and trustworthy and free.