I'm not surprised. I have a Pixel 3 to test stuff with and the quality of the apps just doesn't compare. It seems that Apple customers are just more willing to pay, so they get much better apps. iOS is also far easier to create great apps for - Android app development is an unmitigated disaster in comparison, particularly when it comes to things that are very important in 2020: video and photo capabilities. So not only is it harder to build apps, you make much less money as well if you do. So it's not surprising there aren't many apps worth paying for on there. And on top of that you're also selling to people who statistically have much less money to begin with.