I'll echo this as well. Not only the development pace is ridiculous for such a small team, they're very responsive to support requests via mail and Discord as well.

I had a small problem with the app once. I contacted them via email and it was resolved in a couple of hours and they were kind enough to offer different solutions -- solutions that didn't fill their pockets. (Needless to say, I'm sticking with their services.)

The fact that they can manage all that is almost a testament to how useful the app they're creating must be for them.

I too am just a happy user/customer and wish them nothing but success.