1. Is this ("Tiny Piano has made enough revenue over the past several months to pay all my bills") all ad revenue Edit: Just saw the in-app song pack purchases. Is that where all the revenue is coming from?
2. Isn't, the music niche very competitive on the app store? What are you doing differently?
3. Given that (as you say) downloads begin to trail off, how are you planning on getting to 10M+ downloads?
4. I like the specific goals :) Is being specific (10M+ downloads) a hack you had to come up with to stay focused or just something you wanted?
5. Are you a musician yourself?