4 ms·If the app is opensource, Qt is 100% free under GPLv3.by LorenDB 2y agoIf the app is opensource, Qt is 100% free under GPLv3.detaro 2y agoMost of it is LGPL, so the app doesn't even need to be open-source and on desktop compliance is quite easy.nottorp 2y agoTechnically, you're correct. I just don't like being threatened on their download page.