A well-designed user interface (UI) often has elements that don't require an explicit label to indicate their purpose to the user. A checkbox next to an item in a task list application has a fairly obvious purpose, as does a trash can in a file manager application. However, to your users with vision impairment, other UI cues are needed. Fortunately, both iOS and Android provide APIs for making apps accessible to people with disabilities. Moreover, both platforms provide tools and technologies (like TalkBack and VoiceOver) that can make the lives of the visually impaired easier.
The NativeScript framework produces native apps. Thus, all vendor tools for impaired users work right out of the box. Also, all popular automation tools and frameworks that are based on native Android and iO