One of the mice ran across my room, I turned my volume up to max, aimed the speaker at the mouse, and activated the app's blast of ultrasonic frequency. Immediately the rodent violently contorted it's head toward me, lurching in pain. It's eyes swelled with blood as the creature rolled sporadically around the floor, then let out an unnaturally disturbing cry of agony. Freezing in place, the poor tiny mammal took one final look at me, staring almost directly into my eyes before his body expanded rapidly, detonating into a miniature cloud of blood and viscera. Mouse gore is now in my eyes, and all over my apartment..4/5 stars. d(‘.’d)

First of all many of the bad reviews are from people who simply have been using the app incorrectly. It’s pretty simple just put your iPhone’s volume to the max, and set your frequency to 22KHz and DO NOT PRESS THE BACK SYMBOL AS THIS TURNS OFF THE APP. I recently downloaded and put this app to the test as I’m in the island of Tobago where not only are there an abundance of mosquitos but also the threat of dengue ..it’s been 4 days and I have not gotten one bite even though I see the mosquitos hovering around but not landing and eventually disappear. Would strongly recommend giving it a try with your iPhone’s volume at the max and the sound frequency set to 22 KHz, also be aware that you will close the app by pressing the back symbol, it needs to be open to function ofc!…..good luck!

Being at a wedding around lots of trees and vegetation mosquitoes presence was no surprise, we just forgot the spray repellent, thought of checking out the App Store, found this app, while mosquitoes were attacking everyone on surrounding tables as well I decided to play with the frequencies, starting at 8khz moving up, when I got to 17khz all the mosquitoes disappeared like magic, after 30 min of no mosquitoes I turned off the app just to see if it really worked, in about 15 min we were surrounded by these little guys again, I immediately turn it on directly to 17khz and in less than a minute they were all gone again, I highly highly recommend this app, I’m looking for an app now that produces about 38-44khz which repels flies, love this sonic thing!!

If you have an annoying mosquito in your room at night keeping you awake, this app is a godsend. I don’t know if it works by keeping mosquitos away per se. HOWEVER, I downloaded the app, turned the frequency to 17 and within 5mins that mosquito came out of hiding (probably trying to avoid the sound?!?) I was able to kill it and fall asleep without fear!