I am working on the problem (and by that I mean "it's in private beta"). Mobile is sort of a unique opportunity because a typical mobile app doesn't have the same interoperability requirements as the web more broadly.
However, it's hard to sell, which explains why nobody does it. First it's hard to sell commercially, which you really need if you want it audited by people who know what they're doing. But it's hard to even give it away, because nobody wants to be the test pilot when it comes to security.
Solving this requires a level of cooperation that we may not have as an industry right now. That may mean dark days ahead.
Email in profile, if you want to chat about it