Sends notifications when they are off – Beat-Box Baby: Trainer and Voice Drum Machine HOT Review

I wouldn't buy the pay version for this reason. I liked the app since it taught different sounds for beatboxing. However, everyday, even when notifications are off (without sound) it sends sound notifications with pop-ups. It is invasive. How can I recommend such an app?
Review by Joshua Mayer on Beat-Box Baby: Trainer and Voice Drum Machine HOT.