I’ll tip you in the app

When they promise a tip, I screenshot the ride with notation (“ITYIA”). I’ve already rated them. But what few drivers know is that drivers can change any rating given (up to ten days after the ride). This rider has not given the promised tip yet. Seven days after this ride I will re-rate this rider if the promised tip has not arrived. Obviously there are other factors I take into consideration in rating a rider (which would be reflected in notes on the screenshot).

I always rate 5, initially. If they deserve less, they get it a week after the ride (to avoid retaliation).