I think Uber is clearly in the right here. Passenger’s trip took longer 10 minutes longer than usual, Uber refunded the cost of that 10 minutes.

Uber does not provide a way to tip via the app. Uber’s offical word to passengers about tipping = ” You don’t need cash when you ride with Uber. Once you arrive at your destination, your fare is automatically charged to your credit card on file — there’s no need to tip.”

If you use Lyft instead of Uber, you can tip in the app, if you’re inclined to not have cash and want to tip your driver.