The reason that it is a desktop application is that it is able to run in the background, and pop-up a question dialog periodically. On the internet lots of things (for example advertisements) are competing for the the attention of the user. (Sometimes in distracting ways.) This program is also competing for the attention of the user, but it is very useful for her.

Thanks for the warning about the Einstein branding. While I like the Einstein branding very much, it seems that I will have to get rid of it as soon as I get any serious traction.