Hi,
My name is Florin, I'm from Romania and I am a database applications developer.
I would advise you to choose a web based version of the app, instead of a desktop one. The main reason is, of course, accessibility, but, the app can be converted to a smartphone one at a later time. As an example, I've built an auto parts catalog for a client in Germany and later I've built an Android interface for the same catalog.
So, basically, I can build a simple web based management system using PHP and MySQL that will consist of:
- an user management module that will allow the use of a login form (we can add roles: admin, user, etc); it will include an Add/View/Update/Remove/Reset Pass/Change Pass screens;
- a warranty module that will register and work with the data you are currently storing in Excel;
- a reports module where we can add any number of reports, based on the data stored in the database, like number of claims in a date range, labour time, cost of parts, etc.
If you like my idea, let me know and I can build a demo on my server, and we can talk more based on that. Also, if you have any question regarding the system I'm proposing, please ask them and I'll answer as soon as i get them.
Have a nice day!
Regards,
Serban Florin