The very fact that Lyft's app allows for post-ride tipping shows they are less insensitive than Uber when it comes to their drivers. (As of the last time I used the Uber app, no provision for post-ride tipping existed.) While I have both apps on my phone, I use Uber only if I am in a city where Lyft is not available. If Uber ever runs out of money and leverage to artificially keep fares low, Lyft should be able to raise the fares by a couple of bucks and allow drivers to make a living wage. Until then, ethical riders should consider overly generous tipping as a way to help drivers of both services make ends meet.