Generally I like the app, I also use the NH, LH, UA, LX, SQ, and AA apps. I think the app does quite well in comparison, but it has taken a long time to get it stable. In the latest version I have not found any bugs so far. I had not seen the explore function until now, but one quick spin gave no problems.
What I lack is that all Star Alliance bookings can be shown in the booking list. ANA shows, SQ does not. Just to name two. From the number of apps I use, what I really need is a Star Alliance app that links it all together, bookings, online check-in, boarding passes etc. But that is asking way too much I think.