3 stars: It would be a perfectly useless app, unless you're old enough not to hear high pitched hums that will annoy teenagers who annoy you, so they will run away because they can hear the noise annoying.
5 stars: Fabulous, fine control.of frequencies and mixes them perfectly. Really easy to use too. Have paid now to say thank you, but it worked great for free too.
5 stars: Best app i could find, recommend this app. A bonus of fine tuning and skipping around with speed.
5 stars: Thank you so much, I'm just learning about frequency ratios and this was I can try things out.
4 stars: Needs the ability to play in the background while other apps/all sound apps such as youtube and youtube music are playing.
5 stars: I love to get those High decibels going great for mind control
5 stars: I can dial in the frequency of my tinnitus.
5 stars: It works! I can hear up to 12,223 MHZ.
5 stars: 432 hz orchastrial tuning. The Solfeggio Frequencies. No More Nazi 440 hz (1936) only A-432 Solfeggio Frequencies resonate with Nature and the music of the spheres. All geometric shapes are found in the A-432hz Solfeggio scales. None (ZERO) are found in A-440. Thanks Joseph Goebels (Nazi Propaganda Minister)... yeah, thanks... \
4 stars: You can dial in the ring you may be harassed with! CHEERS
5 stars: I dont know what this app is for but it is really fun messing around with the controlls to annoy people and just seeing what happens on a graph. I also think t...