I understand where you are coming from. However I have over 20 years of professional Java experience, and I am a one trick pony (my wife says: too old to learn new tricks). Apple just doesn't fit me - its a completely different world. So no IOS app from me, sorry.Bummer! You're obviously smart enough to write the software, but you're leaving out those who don't use the Android platform. Too bad. You could make some good money making software for both! Just sayin'
As for earning money : This is a tiny niche market, and there isn't much money to earn. If I was here strictly for the money I'd work on something else. But Tello is more fun...