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27 November 2008

Expense Report application

Expense Report is a Java ME application that tracks daily expenses on your mobile phone. I published this application in October 2007, and I have been updating it.

Couples of years ago, I had many business trips around the world. At that time, I had a Pocket PC as my digital companion, with which I kept track of trip expenses. Nowadays I no longer use PDAs but mobile phones. I need to have an application for mobile phones in order to track expenses instead of Pocket PC.

This demand led me to start development of the Expense Report application in September 2007. But why Java ME? The answer is quite natural. I use several mobile phones whose platforms vary and switch them depending on the activity plan of the day. I have no time to develop an application for several platforms one by one such as Symbian, Windows Mobile, and so on. Especially, there is no choice other than Java ME to deploy user-developed applications on to feature phones.

Because of my motivation, requirements to this application are:

  • Multiple currency support – I travelled across currency regions.
  • Multiple language support – My primary language is Japanese but some mobile phones cannot display Japanese letters.
  • P2P synchronisation among mobile phones – I switch mobile phones day by day. I must be able to transfer data from one to another.
  • Exporting data to PC – Looking back to Pocket PC days, I input expenses with Pocket PC during business trips and imported the data to financial software for PC afterwards.

Because data will be finally transferred to PC, Expense Report application need not have functionality for statistical analysis. I achieved the first two requirements in a month and I made the first release at the beginning of October 2007.


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