Write it! Arabic: Great app for learning how to write Arabic letters!
So happy to finally see Arabic on Duolingo! I would like to take this opportunity to recommend a great (and free!) app for learning how to write Arabic letters. It teaches you the pronunciation and not only shows you how to write the letters and all of their variants but you actually get to write them yourself on your device with practice lessons and ultimately tests! The app is even better if you have a digital pen for your device like the Galaxy Note or iPad series. Wish Duolingo would implement a similar feature on their app in the future!
Write it! Arabic: Android https://play.google.com/store/apps/details?id=com.jernung.writeit.ara&hl=en_US
PS. They also have a Japanese variant which I highly recommend too! Good luck :)