my Car Expenses app for iPhone and iPad

This application illustrates the pillars of cars running costs. It asks the operator to input daily parking cost, daily traveled distance, distance traveled using gas unit, cost of gas unit, service distance, insurance costs, and registration costs.
Then, these costs are explained in terms of cost per distance unit, cost per day, and annual total cost.
The data is explained in away that requires the operator to be consistent with units but can use both systems, metric and imperial.
The app also gives the operator a tool to compare between two cars; costs wise. By showing the results of operating the two cars. The results are showed next to each other, in case a decision or a comparison is needed based on costs or just for illustration