This was exactly the customized lecture I needed right now. I had already gone through app development, but was struggling with marketing and ad campaign setup. The detailed parts you explained were things I could apply immediately and areas I could improve on. Not only that, but for app development that simply started from my own idea, I also received help with the process of finding how to view it according to market needs, and what people actually need. Thank you. This was a lecture with absolutely no regrets! Moving forward, from $1 per day, $10, $100, ... to $1M and beyond, I will go all the way to a personal super app and SAAS.