I am always rooting for the technical founder. If money is all your co-founder has to offer, and it's only 10k per year, I suggest you give him a very small cut, between 10% and 15%. If he has marketing skills, they won't even come into play until your product is online to show off to friends & family, which could take a year or longer... your friend is more like an investor than a partner, and he should be treated as such. Partners can destroy a company when there are disputes, but investors trust the technical founder to make all of the important decisions, and gives advice as a mentor as well. All non-technical founders I have had experience with wants control, has too many ideas, doesn't really understand the market at all, and expects everything to be built quickly & easily. My point is simple, if you doubt your partners abilities, if he has any at all, he does not belong in your company as a partner, but instead as an investor. I learned this the hard way, on more than one occasion.