Good but upgrade prompts are annoying

Its a great radio app- does exactly what I was looking for and I like that it operates from the toolbar at top rather than a separate open window (I use it on my Mac and not my phone). The only problem is that its prompts me to upgrade to the paid version pretty frequenty. A window drops down that interrupts whatever I am working on at the time. I understand the desire for paying app users, but there has to be a better way. I wouldn’t mind if it even prompted me when I clicked into the app but this “pop-up” method is irritating.

Gps9 about myTuner Radio Live FM Stations