It seems that Evernote has slightly different features available on each of its platforms. But as someone who uses Evernote exclusively in Arabic, I have to say that I LOVE working in Evernote. I use a desktop-based, premium version on a Mac. I have full RTL support (enabled by right-clicking, then selecting text direction for paragraph). They are also one of the few programs that can actually do a decent text search in Arabic, even with OCR on images of texts. I'm sad to hear that RTL isn't enabled as well on other platforms, but if any of the commenters above are working on Macs, I'm surprised to hear you're having issues. Try downloading the desktop-based program and see if that resolves the issues? I'm including a screen shot of RTL options on my version of Evernote.