I'm 14 and I've been coding since 6th grade and have coded very advanced things for my company and other small projects;it's not a big deal and I'm amused to see all the other kids who have coded these small games brag so much about it and how "coding changed my life" just simply for the attention. In my opinion, I could care less about how old you are;as long as you don't brag about it then there is nothing stopping you from succeeding;age seems to be the only factor of which has limited me and my company from succeeding, I've put through the efforts and work required;however, investors and actual business men believe the level of maturity is too little as put per my age.

tl;Dr: I agree;don't brag and I don't like how people brag about how you've done so much as per your age group as if that would have limited you. I've done much more when I was in 6-7th grade yet I don't brag about it. on another note;congrats on your efforts and I urge you to continue to in your path.