Limits of the FREE version

It wasn't easy for me to decide how limited the FREE version should be. Sure, I want users motivate to pay at least something, but I don't want to oust them completely.

I hate few things in desktop apps, even I understand their purpose. I hate grayed out menu options, just because PRO version has it. I hate even more the unavailable option isn't distinguished and I learn I have to pay first only after I click on the item.

I can live with some promo upon startup or closing the app, because usually I don't do it too often. But only if it's in a "polite" way, when I don't have to hunt the closing window nor close automatically opened tab in my browser.

I like x day trials, when the app works fully, but my problem with trial versions is, that it has to write the start date somewhere, obviously, and this thing stays on my computer even after I got rid of the software, again - obviously, but after that it's just garbage.

I hate online DRM, even it solves the problem of crap residing in my computer.

So, what DO I like? I like when the only limitation is I can't save my work locally, but I'm freely able to do anything it offers. After purchase there is a encrypted file with the license and this way I will do it with QetriX.

And some polite ads for FREE users, even many of them know how to block them. I believe users can live with tasteful and just slightly disturbing (not by contents) ones.