Best Answer — we recommend the Accessibility Tests for Mobile Applications as detailed by DHS. Here is the link.
From 508 —
The WCAG 2.0 Level AA requirements are all perfectly applicable to mobile apps. There are not really very many at all that would never be relevant, and they do a great job with assessing for accessibility. With the WCAG 2.1 update, there was some attempt to add requirements specific to mobile, but really there are only a couple (don’t lock orientation, and have a minimum touch-target size of 44 pixels).
For more information, please see:
Here is an older baseline from 2013 which details IoS and Android. Section508MobileBestPracticesSummary
Here is the DHS Mobile resources:
DHS developed test processes for evaluating Section 508 compliance for iOS and Android applications, largely based upon Section 508’s Functional Performance Criteria (FPC). The test processes cover testing of “native” or “hybrid” apps. (Hybrid apps are native apps that integrate web content.) Web content designed for the browser should be tested using the DHS Section 508 Trusted Tester Process
Resources for iOS application testing
- How to use built-in iOS AT
- DHS Section 508 Compliance Test Process for iOS Mobile Applications
- Mobile Testing Report Template iOS
- How to Report Using the Mobile Testing Spreadsheet