DTMF Decoder by dreadtech.com (iPhone)
(44)
Released: Feb 25, 2009
Version: 1.8.2
Size: 2 MB
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Ranking - Utilities (iPhone)

DTMF Decoder

dreadtech.com

Completely redesigned decoder!

Turns your iPhone into a simple DTMF decoder. Simply hold the iPhone's microphone near to a clear source of DTMF tones (telephone "Touch Tones") and it will display the numbers being dialed. The decoded digits are also placed into a text area from which you can copy them to the clipboard.

A row of LEDs indicate which frequencies are present in the signal - each LED corresponds to a single frequency.

See it in action here:
https://www.youtube.com/watch?v=l_QD8KFCJPw

Source code freely available:
https://github.com/veghead/ios-dtmf-decoder

What's new in version 1.8.2
Restored the ability to capture tones when the app is in the background.

Screenshot #1
Our verdict: Meh!
  • DTMF Decoder is a poorly rated app (2.5-star).
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