Phone and ipad
The app on my phone is not synchronised with the one on my iPad. I have resisted a profile on my iPad but my iPhone does not register it. I generally work on my iPad but at times will need to use the phone app only.
Can you study on your computer ! Write in interet '' duolingo'' and click '' duolingo , english , spanish and other languages '' write you password and e - mail , select language and Voila ! ;) But you can change your iphone on samsung galaxy , maybe it will work .