The writing and layout direction used for Arabic, which requires mirroring the whole interface, not just the text.
RTL stands for right-to-left. In Arabic interfaces it is not enough for text to start on the right; the whole layout mirrors: side menus, next and back arrows, column order and icon placement. There are important exceptions, such as numbers, phone numbers and Latin logos.
An app designed in English and then translated often feels foreign to Arabic users: reversed arrows, text aligned to the wrong side and mixed-up numbers. These details erode trust. That is why Fanann builds interfaces Arabic-first. Read about common RTL mistakes. Practical tip: review screens with a real Arabic-speaking user and pay attention to mixed fields like email and phone number, which usually need left-to-right input even inside an Arabic page.