[Teknoman117]

I should have been a little clearer than my one line quip. I wasn't trying to say you should give it out for free :). It's just that GPL and LGPL (v3 specifically) are extremely hard or impossible to comply with in the mobile world.

Even if the software author complies with terms and provides full source or in the case of LGPL, enough to relink the app with a modified version of a LGPL'd component, you can't really swap the app for your modified one due to the "protections" in place on Android and iOS.

Personally, I'd suggest taking a look at how Qt does their commercial licensing.