Thanks so much for sharing and congratulations!
A couple of questions: I'm currently in the process of building a children's game... Is play testing with kids something you do methodically? Do you have any tips/advice regarding how to best get feedback from children or even other parents?
Also how did you (or did you at all) figure out what age group the game is appropriate for?
If you are making a game for kids, it is absolutely crucial to test it with kids. You can try to think of how a kid would use your app. But once a real kid tests it, you slap your forehead and think "why did I not think of this???". It happened to me quite some times
Regarding the age group: I just guessed. For my puzzle apps, I created puzzles which a 2-year old can solve (only 4 shapes on one puzzle) as well as puzzles with up to 16 pieces. A 5-year old can solve these. So I just wrote "from ages 1-6" and nobody complained so far.
I try to have different difficulties in the app, so the age-span makes sense.
Luckily, my nephew and niece are 3 and 5 atm, so they do a lot of testing for me :D
I know many people who have kids, so I don't have problems getting feedback from kids and parents. Maybe you could ask your local Kindergarten if you may visit them and show your app to the kids there? Or at a school? This would also be a good idea regarding marketing. If the kids like it, they will tell their friends. Just make sure the kids remember the name, so their parents can buy your app once its finished :D
BTW, I created a new website that now has all of my "monthly reports" stuff, please check it out here. You can also find the latest income report (currently for march) there.
http://www.indie-story.com/