For the MSE app for the iPhone, the math display is OK for the main body but is displayed as input code in problem titles - is there any way to solve this? Thanks.
As explained in my meta post announcing the addition of MathJax this is a known issue. However, it's really unlikely for this to be resolved since it means turning everything in the application to
WebViews rather than just question and answer bodies. -- Kasra Rahjerdi, SE Mobile Team Lead
The reason we get to see formulas in post bodies is that they are rendered by a web browser engine, not by the app directly. The app pastes the rendered view into its interface, it's sort of like a browser window inside of an app.
If question lists were also rendered by a web browser, the app would be a glorified bookmark to the mobile version of the site.