I found this app over 8 years ago, since then Ive tried out other gas mileage apps, but keep coming back to this one. The intuitive UI makes it easy for anyone to pick up and start using. Not only is it a great tool for tracking mileage, fuel economy, daily costs or carbon footprint; the service reminders are really helpful, be you a DIYer or just need to know when next to take the car into the shop. Every iteration has some new feature that keeps adding to the overall usefulness of this app. Its by far the best mileage tracking app Ive ever used. One small feature request, ability to encrypt Road Trip data stored in Dropbox. All of the backup data is just sitting there in plaintext.