We was set the task of designing a conversion app for a well known fan company.
they wanted an app that could convert most things in within the fan world, things like flow rate, pressure, length, velocity, derating etc.
They also wanted the ap to be downloadable from their website.
The solutions we provided was in C#, we made a main menu then 8 sub menus linking to the different conversion pages.
As an added bonus we set the software up to be downloadable from their website and if there are any changes made to the app then the software would talk back to the website and ask if you would like the app to be updated.
That way you dont have to let anyone know there is an update as it will ask as soon as you run the software.