Is 'donation' considered as commerical?
I want to port an open source program to iPhone, the license prohibited any commercial use of the code. I emailed the author and he sent back an email saying freeware is ok.

Of course I cannot (should not) charge anything on top of the code. Still, I want to get compensation for my work on UI design, graphics and integration work. 

So I wonder:

 1. Is donation (via PayPal) OK for my case?
 2. Is in-app purchase OK? i.e. the program is free, the user has the option to buy addition theme graphics?

Thanks
Is 'donation' considered as commerical?
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I want to port an open source program to iPhone, the license prohibited any commercial use of the code. I emailed the author and he sent back an email saying freeware is ok.

Of course I cannot (should not) charge anything on top of the code. Still, I want to get compensation for my work on UI design, graphics and integration work. 

So I wonder:

 1. Is donation (via PayPal) OK for my case?
 2. Is in-app purchase OK? i.e. the program is free, the user has the option to buy addition theme graphics?

Thanks