Emil, I know what your motivation is here, but I have to agree with some people commenting on the feasibility here. Sounds to me you have something like FairSoftware with a purely teen focus in mind. The problem with that demographic though is that they a)have no money and b) are few and far in between. I believe you have a slight disadvantage being located in Bosnia, but it wouldn't be a bad idea looking a bit closer to home for your partner.