CarzUP is a free car rental app available for Android users. It has been used by over 200,000 people worldwide to find rental cars in 135 countries. The app offers over 500,000 cars available for booking, from 30+ major car rental brands such as Ace, Advantage, Alamo, Avis, Budget, Dollar, Enterprise, Hertz, National, SIXT, and Thrifty.

One of the best features of CarzUP is that 98% of cars can be booked without a credit card. You can book your car and pay at the counter when picking up the car. The app also allows you to keep all your upcoming, past, and cancelled reservations details and numbers in one place, making it easier to manage your reservations.

Overall, CarzUP is a great app for those who want to find affordable rental cars around the world. With its user-friendly interface, vast selection of cars, and easy booking process, it's definitely worth checking out for your next trip.