Interrupts everything. The app demands to be displayed over all other apps, making it impossible to use anything else so long as the app is installed. You can't even close the app fully: it's always displayed somewhere, even when you shut the app down. I couldn't use my normal music app because this would pause songs to display itself with an ad. There are much easier apps out there for money earning than this one. I couldn't even tolerate having this one installed for a whole day. Terrible.