I hope that that app has a future. I haven't heard him talk about it since the time he announced it.
Yep, account claim tokens and the fact they are not tradable (but even if they would be), is one clear thing that can limit the speed of user growth when we talk about big numbers. I believe it's by design, much like the market cap of HBD doesn't go to the sky except if HIVE goes to the sky too.