Lagging while using via Bluetooth – Megaphone: Voice Amplifier Review

I needed app which can play micro phone via Bluetooth, I tried other free apps which can play via Bluetooth but the sound was lagging when played in Bluetooth. And with this app I 35 but is the pro version with giving some dollars then I might get a good sound via Bluetooth. But this app is not different than other apps when I play microphone via Bluetooth speaker if the lags. So I just wasted my money. Please intro this app so that van VA play via Bluetooth that is not lagging
Review by Tarundholariya on Megaphone: Voice Amplifier.