Kudos for sticking with this project, which has not made you a ton of money overnight, since at least 2012.
I don't mean to underplay the work involved in programming and marketing this project, but just not giving up is perhaps the hardest part of things like this.
Any success, ever will have had a period of simply not giving up and continuing until it works. Overnight successes more often than not are years of hard work under the radar.
I don't mean to underplay the work involved in programming and marketing this project, but just not giving up is perhaps the hardest part of things like this.