A free app for Android, by Simply Advanced.
Simply DTMF Tone Generator is a simple app for playing any DTMF tone on your Android phone or tablet. The app comes with all of the best tones and frequencies included, so you can easily play any of them on your phone.
It also has a built-in sound spectrum that allows you to easily listen to the frequencies of any tone, so you can play them on your phone and learn what they sound like.
It works as easy as a normal sound generator app, but it is much better and more flexible.
You don't need any special setup or hardware to use the app. You just need your Android phone or tablet and an Internet connection.
