I appreciate that the developers are trying to do something very difficult. It's also a very cool idea! I liked the interface they developed; the graphics were good, and I think it might have become fairly easy to use once you got used to it. But-
1. It was really hard to figure out how to record a bird's song from the main screen. That's what I bought this app for!
2. Once I got to where I could record birdsong, the app failed to record. Seriously, the on board voice memo app did better. This app requires you to record for 30 seconds, but it shuts down in less than a second with a failure message. For the record, what I was trying to record was a house wren singing nearby. If you know those little guys, you know how loud they are! The voice memo app recorded him perfectly.
3. Then I randomly looked up "Osprey". The range information given was not accurate.
I hope iBird Northeast will still work after the latest iPhone update. That's a solid, simple app with accurate information. This one is a great idea that doesn't work well in practice.