U2 are only good with technology as investors (see the FB investment).
But this digital app will never see the light of day or go nowhere.
-Is their website any good?
-In Zoo TV era, they made talk of a television station that is interactive, did it ever happen?
-In the mp3 era, they always made talk of releasing shows in some capacity on their website, did it ever happen? They even took forever for U22 to come out.
-Did they ever release a DVD with decent interactive digital features?
U2 are slow when it comes to digital. After all, they are one of the few bands remaining who are still relevant but come from a pre-digital era.
Don't bet your bottom dollar on this digital app to be released, let alone successful.