What kind of app do you need?

I have created an android app, in my opinion, it is a very decent app. (link:https://play.google.com/store/apps/details?id=appinventor.ai_kmryashasvi.MatrixMan) But, it is not performing well.

I wanted to know, as a programmer, what kind of app do you need that I can make and we both will be benefited because of it?

My app will be add free, forever.