Looks like Swing Copters is live in the App Store. Almost 900 reviews and it's just shy of a 4-star rating. Sounds as if this is a fairly decent follow-up, but no where near the Flappy Birds success. Tough to see any developer being able to follow up what had become a cult classic of sorts. Good to see this guy back to developing games, releasing them and now pulling them. Well, that last one is still a question mark.