It is simple to ask for money. A lot of apps don't even contemplate doing that.
The hard part though is getting the person to actually give it to you. In order to do that, you need to create something they value, which means, partly, not giving it all away for free in the first place.
The hard part though is getting the person to actually give it to you. In order to do that, you need to create something they value, which means, partly, not giving it all away for free in the first place.