The company I work for, Emerge Interactive launched its free A11y WCAG Accessibility Checklist, a simple checklist-based off of Luke McGrath's and W3C's recommendations. It can now be found on Apple's App Store and Google Play. This was an internal project spearheaded by former co-worker Joe Watkins but included most of our team. I lent my hand, especially in the development of the microsite.
Accessibility is essential when only 5% of a survey of 215,942 people were deemed fully computer literate, and 1/3 is can completely medium level tasks. What we design has to be digestible by all.