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:
See detailed description
Source:
Apple Apps Store
Data ingested on:
2026-06-29
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Apple app. Please use these information below to contact the Apple app developer.
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.
by Ex*****, 2025-11-09

Doesn’t work well.
by Dr*****, 2025-02-07

iPHone 13. iOS 17.4.1 Never displays anything
by Ol*****, 2024-04-02
View all user reviews ›

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