Accessibility testing on mobile apps based on WCAG guidelines

There are questions about how WCAG 2.0+ is applied to accessibility testing on mobile apps, which suggests that the same guidelines apply but are slightly adjusted for web applications compared to mobile applications.

However, because some of the designs and interactions for mobile apps are linked to the actual implementation of the hardware and mobile OS, I wonder if there are processes (and if so, are there tools that assist with the process such as the WAVE accessibility tool) that can be used to test mobile app accessibility.

Any aspects of WCAG that relates to user experiences and ensuring usability is measured based on testing with users rather than just going through code or software based analysis should be the same, so I am interested in the code and technical implementation analysis of accessibility against the WCAG guidelines.