You will pay extra! – Curb - Request & Pay for Taxis Review

While this app seems to be a great idea and it does work as it says it does, you will pay much more to use it than you would just paying cash or using your credit card in the cab. Two important things, 1) they charge you $20 even if the fare is only $3. I’m still waiting to get the refund on three rides. I should have read the reviews on this before actually using the app. 2) They charge multiple fees on top of the regular cab ride. I was charged a $3 CC fee on each ride. I’ve emailed Curb to get an answer on this with no response. Use cash or another method of payment than this app. It’s going to cost you much more to use this app than just a cab ride.
Review by Mdsx2 on Curb - Request & Pay for Taxis.