Useless Bluetooth Function - ECHO DELAY – Megaphone: Voice Amplifier Review

I purchased the upgrade to use the bluetooth speaker function. There is a considerable delay which makes an echo rather than a clean and immediate broadcast. Useless for a classroom setting. I emailed the developers for a refund within minutes of download, and days later still have heard no reply. I do not recommend this app for bluetooth connections.
Review by metta mo betta on Megaphone: Voice Amplifier.