AUTOsist seems better

Tried both apps. This one looks a bit bland and "dumbed down". AUTOsist looks better and seems more intuitive. The only drawback to AUTOsist is that you have to upgrade to the paid version to have full features and when you get the most expensive version, youre still limited to 5 vehicles.
Otherwise, the features seems to be about the same. You can schedule reminders and track mileage and maintenance in both.

totallyfrozen about Auto Care Free - Car Maintenance Service and Gas Log, v3.3.2