5 stars: Worst GPS software I've ever used
4 stars: Love it. Very useful app.
5 stars: Hearing up to 20kHz 🔊😁
5 stars: It works, I just wish that if you touched and held the frequency +/- buttons that it would go up and down continuously instead of 1 hertz at a time. The slider is too coarse.
4 stars: Tones appear to be accurate but I have no way to test them. I am trying to match the tones of my tinnitus but with this type of control it is very difficult. But I don't think it could be any better on a phone application. I am in the process of building an electronic one controlled by a potentiometer.
4 stars: nice, but really needs ability to run in background like music player in order not to keep app open with screen on without being able to check on other stuff.
5 stars: All frequency test tones very Nice. Only thing it doesn't show is db volume on screen. Plug headphone on set any tone turn volume up until you hear it change to a distort sound then turn down until you get the right tone. Some devices may vary I assume as a volume level output range control.
5 stars: excellent tone generator, very useful for setting up sound system/stereo. sub generator useful for finding best sub position in room. can also use it to find room nodes and to position tube traps/diffusors/damping panels. Could also be helpful in setting crossover frequencies between main speakers and sub.
4 stars: It does exactly what it says, generate any range of audio tones...