This app was mentioned in 2 comments, with an average of 3.00 upvotes
I made an app for learning how to write Arabic if you haven't already. I'm still working on adding the positional variations though.
https://play.google.com/store/apps/details?id=com.jernung.writeit.ara
I just released an app that teaches you how to write Arabic. Check it out and let me know what you think! https://play.google.com/store/apps/details?id=com.jernung.writeit.ara