I checked all other DTMF tone generator apps, saw that they were all old and buggy, so I made my own version vastly better. It incorporates feedback in the reviews of the other apps. If you have any questions, comments, or suggestions, feel free to email me. I hope you like it. Description: Play a tone, any tone. This app is basically two apps in one. One side is a simple DTMF tone generator, and the other side is produce-any-tone-you-want signal generator. You can hear what any frequency soun