Question about math tables in accessible apps

Accessibility Advocacy
Hi, we develop accessible applications for iPhone and iPad. Among other apps, we developed LightDetector and iMove. We have recently published Math Melodies (for iPad only) that supports math learning for primary school children. The app makes large use of tables and some users suggested us to support, in these tables, the same behavior of HTML tables (i.e., the rotor functionality that makes it possible to move up and down in the rows). We have two questions: 1) do you know of any other app (i.e., not HTML) that presents a table with this behavior? 2) do you known if there is any interface object that natively supports this behavior? Thanks, Sergio EveryWare Technologies - Accessibility Team