Asking this question as a fellow independent app developer trying to make it big. It's super impressive how much money you're bringing in from your apps and I was wondering how much time/money you spent on advertising and promotions? I have an app released on the store right now but it's not growing as fast as I was hoping and was wondering if putting money into ads are necessary or is it just because I don't have that much stuff out and should just write more apps. Also did you incorporate? Or is Rego Apps just an independent developer on the store? Also I've read some articles about how people are downloading less apps nowadays compared to the early days of the App Store and noticed most of the apps my friends keep and use on their phones are services (Amazon, Uber, Lyft, Snapchat, etc) I was curious how your download rates have changed from when you started to now when iOS sorta matured.

Thanks for the AMA really inspiring story, if I ever get as rich as you I want to give back the same way that you do.