They appear to charge TAF and other regulatory fees (https://brokerage-static.s3.amazonaws.com/assets/robinhood/l...) -- and based on the fee numbers it looks like they don't have significant volume -- but the website shows "FEES $0" in the app screen. The fees may not seem to be a lot, but saying that fees are zero is a factually incorrect statement.
Comments
When this was on the front page last time, I pointed out that they charge fees: https://news.ycombinator.com/item?id=6906374
I'm glad they fixed their homepage, but the table in the article (http://tctechcrunch2011.files.wordpress.com/2014/02/screensh...) is wrong.