Most interfaces, gestures and UI patterns are based on reading from left to right (sinistrodextral).
Swiping to the right to go back is based on making the same motion with your finger if you want to go to the previous page of a book.
The back button is facing left, because it represents the direction (in books and sentences) we already read.
And these things work exactly the opposite in Arab countries.
I know that Arab browsers have a back button that points to the right. But when it comes to Android, iOS and Smartwatches, a lot of apps don't take right-to-left reading into account.
What features and options should we as UX Designers keep in mind when designing an app that needs to be both left-to-right and right-to-left-friendly?
Bonus question: are gestures (like swiping) also inverted on Android / iOS for RTL-users?