
Senthil K
simple app that works very well. you just set an input and an output and it works perfectly. i just needed an app to listen to my voice through the phone's microphone and play it louder through the speaker. I've searched for hours and tried many apps that claim to do it but either you have to pay for a subscription or it doesn't actually do what it seems to. this does. it's not just the best app that listens to your voice and plays it louder, it seems to be the only free one.

Sergei Aponasenok
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This is almost the best app I've tried so far. There are input and output switches, but it doesn't work correctly (( In my case, the combination: IN-Bluetooth, OUT-AUX doesn't work. - Does NOT work in the background. - There are some echo. I use an external high-quality microphone and headphones (without a microphone) via an AUX splitter cable. Bluetooth headset microphone works on oscilloscope but not hearing in AUX headphones.
93 people found this review helpful

Michael Williams
Configuration is easy, straightforward, and does the job. If you're looking for a a hearing aid system this is not a good idea. If you are looking to listen in on a conversation you're not invited to that's within Bluetooth range of your phone, well hear you go. Pun intended.
27 people found this review helpful