Mileage calculator

This app will calculate the mileage of your vehicle easily. Just enter the price of fuel in your country, the amount spent for a run and the distance run, and press calculate. This calculator does not need any unit conversions.
There are features to save the calculated values with the date. You can also check the saved mileage values on a simple line graph. This app also displays the last values checked when it's run the next time.
There is an option to save the file as a tab delimited file with xls name format.
This app creates a folder called Mileage and saves a text file named mileStat.txt in it.

Ver 1.2
Added configuration screen to add Units of local Fuel, Distance, Currency and Mileage units. This creates another small file mileconf.txt to the app folder.

Added option to save data as xls file. Please note that this is not a real Excel file but a tab delimited text. Can open with Excel in Windows.

Changed buttons to reflect press action. Changed some button looks.

Graph now shows the Average mileage and Target mileage lines

Coming in the next update is the date format for your location. Apologies folks, i should have done this from the start.

Some folks still have a problem with the new version. I'm sorry i was not able to replicate the problem at my side. Please email me at icelobber@gmail.com regarding your queries. Added an option to backup the mileStat.txt file (in Ver 1.22) before the new version splits it.

Ver 1.21
Fixed a critical bug where the last mileage record was ignored. I'm very sorry for the one user who loaded this.

Ver 1.22
The app will save a backup of the older stat file before creating separate new stat and conf files. There was a problem with new installs. Fixed in this version.