Does what its supposed to! Just about the only reason for such an app to exist, is to allow you to produce DTMF tones, on demand. Usually, this is because you don't have a way to generate them otherwise. These goofy wannabe DTMF apps, though, generate a SET duration tone, rather than play the tone as long as you press the key! Some services need longer tones. That's why I love this one. Why not 5 stars? Only because I could imagine some enhancements, such as recording/saving strings, etc. This is simple, and powerful, though.
Sound on HTC M8s ruled by ringer volume, not media. At first, no sound on my HTC M8s. Then after realizing my media volume was on Max but my ringer volume was on "Silent" I tried bringing up the ringer volume and... voilà! DTMF out loud and clear.
I can call businesses again :) Finally, a tone generator that is loud and simple. Works with my old pulse Trim phone from the 70s. Thanks.
Sick of goddamn ads Why ads? Come on? Volume control could be better.
Perfect Thanks, this simple app saved my skin when I needed to perform a business critical function with an automated call back system which was not accepting the tones from my land line. I simply played the tone into the receiver :)
Need to improve sound volume! Can't hear a darned thing. Try syncing the app volume with the volume controls of the handset....
Version 1.02: Modified to support Android 2.1 or higher. No change in operation.
Version 1.01: Corrected issue with FC. Made buttons larger on high density screens.
Frequency Sound Generator - waveform audio signal generator/ function generator