Along becoming an app developer is not that hard. It is just time consuming with all the things that you have to learn along the way. I must admit that I have done a lot and lose a lot. Either way to be a success app developer is to experience and the hardship and the benefit from one’s knowledge . It is also great to pass on the knowledge to other who seeks it.
I have learn to make a simple traditional "Hello World" app to a Photo Editor app then to a simple Shopping App with in app-purchase. It was a great ride and I’m still riding on it. Even though there some bumps along the way, just don't worry and kept on going. My past mistake is a stepping stone for me to learn news things.
Our greatest glory is not in never failing, but in rising every time we fail.– Confucius quote. May you achieve whatever you dream of, Zeno.