On this page:
Make sure that navigation controls that appear on multiple pages (like links in a header) are consistent across pages.
When ways to navigate content (like links for the Web or buttons for native apps) are repeated on multiple pages/screens, the order in which they appear on each page/screen should be consistent.
This makes it easier for people to learn how to navigate the website/app, and it enables people to develop strategies (like using screen reader shortcuts)for more efficient navigation.
3.2.3 Consistent Navigation: Navigational mechanisms that are repeated on multiple Web pages within a set of Web pages occur in the same relative order each time they are repeated, unless a change is initiated by the user. (Level AA)
This applies to native apps by replacing “Web pages” with “screens”.
See the W3C’s detailed explanation of this guideline with techniques and examples.