I'm a cash tipper. No app is going g to tell me how to spend my money. I tip well when I can, almost always a healthy, tya, cash tip. Unless the Driver refuses to follow simple instructions, like don't leave food on the deck bc the rats, or other humans will get to it first, ants get into everything, inclement weather destroys paper/cardboard. Most drivers are fantastic and kind, I keep special money set aside, ready for those people. I also gift the mail carrier and the extra special UPS drivers. But AH with attitude who ruin stuff, no.