I need your help to make a mobile Anki app

Hello everyone,

I'm an Anki user and developer, and I'm currently making my own Anki app. This started out of frustration, seeing how the iOS anki app looked 2 decades old while costing 30€, and now I'm looking for your insight, such that the app I'm making might be useful to others.
So I made a Google Form to ask for your experience, to make sure I don't miss any important features.
Thank in advance to anyone who takes the time to reply, and if you don't feel like it but still wish to leave me your suggestions, feel free to do so in the comments, anything is appreciated !

https://forms.gle/kd1w1Q2V8VAA2Ds86