@Wiimer Welcome my friend. I'd like to add a few quick notes about Bubble.
1)You can start with the free version, just to see what the App looks like and how it works. To have all the functions, however, you must purchase the license. I think i remember that the Gapless feature is one of those that only works with the license.
2) Bubble is really full of options. By setting the various options you can really adapt it to your needs. Nothing complicated, but there are lots of menus and sub-menus so take the time to explore them all and experiment with the various settings.
3) Bubble is the most similar to the native App. For example, by tapping on the album cover in the Now Playing window, a pop-up window opens containing Qobuz reviews regarding the Album. Obviously if they are in Qobuz. From there, you also have the possibility to view/download the album booklets. Of course always if they are present in Qobuz.
4) You have the widest choice on how to order the Albums and how to view the covers. List/Grid. Not only that, you can also zoom in or out on the covers to have more or fewer Albums on the same page.
Of the three Apps it is the only one that offers you all the possibilities I have told you about. Last thing I can say is that it works smoothly, has frequent updates, and also on a graphic level it is very well done.
Having said that.......experiment and choose.
I also have MConnect on IOS, but I rarely use it. I never use WiiM App. Too primitive.
Stay well