Lima isn't Bogota, and the taxis here don't make a habit out of taking people to ATMs and demanding they withdraw all of their money. Nor do they try and charge me 5 times the amount because I'm a gringo.
I don't see the need for Uber at all in Lima with Easy Taxi being a safe backup for those who feel they are going to be cheated. Remember, Easy Taxi has all the prices programmed into the app so you can just check the fares before boarding, even if it isn't an automated process like Uber is.