Differences between iOS and Android versions

Hello everyone!
I am a long time Memrise user. So far I got the app on my Andoid phone and on the words screen rahat I face in mu courses, there was always a plus sign next to the word and when I clicked on it, sample sentences and the type of the word were displayed. On the other hand, there was a section called “help me learn” on the word screen. I could not see these features in the Memrise application in the Apple operating system. Is there something I’ve missed? Do I need to enable these features from somewhere like settings? Or are these features not available in the IOS version? I will be waiting for your answers. Have a nice day! (Plus sign and mem parti in Android):