DTMF Decoder

Name: DTMF Decoder
Price: 0.99 USD
Rating: 2.6 (16 reviews)
Author: dreadtech.com

By: dreadtech.com

Utilities

Features & Capabilities

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.

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

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

User Growth & Download Statistics

App

By:

dreadtech.com

Rating:

2.60

(16)

Version:

1.11.1 Last updated: 2023-08-09

Version code:

858934032

Creation date:

2009-02-25

Compatible devices:

Size:

4.59MB

Price:

0.99

URLs:

Website ,Privacy policy

Full description:

Source:

Apple Apps Store

Data ingested on:

2026-06-29

Compare stats and ranking:

Ranking

# 403,757 ▼ 1,132

For Developers

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Contact the developer

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Developed by:

dreadtech.com

Apple Apps Store

https://apps.apple.com/us/app/dtmf-decoder/id306195275

Website:

http://dreadtech.com/software/dtmfdecoder/

User Reviews

I tested this in multiple environments and with multiple sound levels. This App needs to buffer the DTMF better because there are far too many “double digits” that occur. I also have “Phonal Tonal,” and that also generates errors, but it outperforms this App even in quiet ambient conditions. Very disappointing. Phonal Tonal seems to generate random (phantom) numbers when no DTMF is present, which this App doesn’t seem to do, but it still shouldn’t put in multiple digits when only one digit was pressed. I think this should be a minor tweak in software.