They were the first to offer no commission trades. That's why I have an account. Now that vanguard offers that for equities and they default to putting your money in a money market account where you get the interest, I plan to only use vanguard.
The Robinhood mobile app though is way better than vanguards. It looks like a native app and even updates prices every few seconds where as the vanguard mobile app is just a mobile website wrapper (or at least looks like it).
