What are some alternatives?
When comparing Gas Manager and Fuelio, you can also consider the following products
Fuelly - Fuelly allows you to tracks your gas mileage over time, helping you calculate fuel expenses as you drive.
FuelLog - The latest Tweets from Simon Morgenthaler (@FuelLogAndroid). FuelLog, the best fuel, cost and maintenance tracking app on Android!
Car Expenses - Track your vehicle related expenses: refuels, maintenance expenses and trips over time. Use all available reports to find out your vehicle performance and more!
Mileage - A Mileage tracker for an Android-based phone.
Everlance - Automatic driver mileage & expense tracking with mobile apps
My Car - The application allows you to quickly and easily manage the traffic of your cars.