Tone Generator Pro

This app generates a constant tone (sine, square, triangle or sawtooth wave) in the audible frequency range (20Hz to 22KHz) which may be adjusted in 1Hz or 10Hz increments. In addition, special sounds can be played to remove the water from your speakers and to help you relax, meditate and sleep better. Each of these main sections of our app is on a separate page, and more information about them will be displayed when you tap the About button. What else this tone generator can be used for?
- Tuning musical instruments and testing audio equipment
- To find out what is the highest frequency you can hear
- To interact with your dog, to stop him from barking (Note: Longer exposure to the high-frequency range can damage the dog's hearing)
- To find out the frequency of your pure-tone tinnitus, also to provide some relief from it
- To induce calm and relaxing thoughts during meditation, to meditate effectively and successfully

Features:

-- simple user interface, select and play the sounds
-- two buttons to adjust the volume of the sounds
-- swipe left or right to adjust frequency by 10Hz
-- swipe up or down to adjust frequency by 1Hz
-- free application, no intrusive ads
-- no permissions required
-- this app keeps the phone's screen ON