Not all DoorDash tips actually go to the courier on top of an order's total.
The company's opaque system, which went viral this week after a New York Times reporter worked for the company and wrote about his experience, has now come under fire from critics and customers who call their tipping system misleading.
In short, every DoorDash order comes with a guaranteed minimum earnings for the worker who completes the job. If the total ends up being less than that guarantee, then DoorDash kicks in the rest of the money. But in a small number of cases, the tip can also help make up that difference.
Read more: DoorDash uses a shady tactic that stiffs workers out of some tips and customers are furious
In light of that news, we asked some of the world's most prominent gig economy startups, many of which function almost exactly like DoorDash, about their tipping policies.
Here's what the companies said: