Useful guide to Apps

I came across the following diagram on Forum Nokia which finally made a little more sense to me about different extensions for mobile applications. I am not a developer, so this shows me why some of my apps end with .sis and others end with .jad. Sounds very simple but I guess it never was all that crucial to me to find out more.

However, if you are a developer, you may want to have a look at Forum Nokia to see how to get your applications signed and on the Ovi Store, then let us know when it is available for download.