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DTMF Decoder

DTMF Decoder

by dreadtech.com

17 ratings
57 reviews
🔧 Utilities
🎬 Entertainment
$0.99

Details

Released
February 25, 2009
Updated
August 9, 2023

Features

Developer

dreadtech.com
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DTMF Decoder screenshot #1 for iPhone
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Reviews summary↘︎
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📝4+ tags
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🔄6+ apps
Alternatives↘︎
❓5 answered
FAQ↘︎
📦w/o updates
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About

This utility transforms your iPhone into a DTMF tone decoder. It listens to DTMF tones through the microphone and displays the dialed numbers. Decoded digits can be easily copied to the clipboard for further use.

✓DTMF tone decoding
✓Microphone input
✓Displays dialed numbers
✓Copy to clipboard
✓Source code available
Show original description

What users say about DTMF Decoder

Reviews of DTMF Decoder are mostly negative: the Utilities app is rated 2.5/5 from 17 App Store ratings. What users like most: works as advertised (for some), handy for professionals. Top complaints: too many "double digits" / errors, doesn't work well. Summarized from real user reviews.

Positive things

  • 👍Works as advertised (for some)
  • 👍Handy for professionals
  • 👍Useful for troubleshooting
  • 👍Good value for money (for some)
  • 👍Can pick up speed dial tones
  • 👍Adjustment functionality for noisy inputs
  • 👍Idiot-proof interface (for some)
  • 👍Works perfectly for me (for some)
  • 👍Catches long and fast sequences (with tweaks)
  • 👍Open sourced under GPL (transparency)
  • 👍Works great for ham radio operators
  • 👍Simple and effective
  • 👍Brilliant app for those who know its use
  • 👍Works well for decoding DTMF

Negative things

  • 🐛Too many "double digits" / errors
  • 🐛Doesn't work well
  • 🐛Never displays anything
  • 🐛Nothing would get it to work
  • 🐛Piece of crap doesn’t work
  • 🐛Useless
  • 🐛Won't work with new iPhone update
  • 🐛Doesn't work at all
  • 🐛Pretty useless
  • 🐛Misses about half the numbers
  • 🐛Poor performance
  • 🐛Only usable at full sensitivity, works poorly
  • 🐛Terrible - does NOT work
  • 🐛Unhappy with latest version
  • 🐛No instructions or labels
  • 🐛Decoded box works poorly
  • 🐛Does not work
  • 🐛Useless
  • 🐛Not usable
  • 🐛Disappointing
  • 🐛Doesn't work reliably
  • 🐛Misses repetitions or gets decode wrong
  • 🐛Gets hopelessly wrong decode results for fast autodial
  • 🐛Too many errors to use reliably
  • 🐛Useless
  • 🐛Doesn't decode
  • 🐛Etwas für die Tonne (not usable)
  • 🐛Absolute Garbage
  • 🐛Barely decodes
  • 🐛Cannot keep up with quick tones
  • 🐛Doesn't decode hex
  • 🐛Doesn't work properly
  • 🐛A waste of money
  • 🐛Only gets about half the numbers correct
  • 🐛Erkennung mangelhaft (poor recognition)
  • 🐛Doesn't recognise accurately
  • 🐛Garbage
  • 🐛Only got number 0 each time
  • 🐛使え方 (not usable)
  • 🐛Doesn't work
  • 🐛Not working as stated
  • 🐛Barely works
  • 🐛Usually nothing detected
  • 🐛Don't bother
  • 🐛Not worth it
  • 🐛Does not detect DTMF tones very well
  • 🐛Only detected a couple of digits
  • 🐛Misses digits when sound is too loud
  • 🐛Only "decode" the number 0
  • 🐛Not sensitive enough
  • 🐛Couldn't get it to recognize anything
  • 🐛No status indicator
  • 🐛Needs fixing now
  • 🐛Fortement deconseillé (strongly not recommended)
  • 🐛Ripped-off
  • 🐛Total waste
  • 🐛Display is too small
  • 🐛Doesn't support scrolling back
  • 🐛Wasted screen space
  • 🐛Stray false digits, especially 1's
See all reviews

What's New in DTMF Decoder

1.11.1

August 9, 2023

Rebuild for OS11+.

User reviews

Most RecentHighest RatedLowest Rated

45 year PBX Installer here

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.
Show more
EExCuprum

Not good

Doesn’t work well.
DRDrew for Reviews

DOES NOT WORK DON’T BUY

iPHone 13. iOS 17.4.1

Never displays anything
OGOld ROLM guy

This app doesn’t work

Tried every imaginable setting, rebooted phone multiple times (iPhone 10) and nothing would get this app to work.
WWebpinger

Funktioniert

Simple Idee gut und liebevoll umgesetzt. Wollte wissen, welche Tonfolge am Anfang von Vienna Calling (Falco) gespielt wird. Nach etwas Justierung in den Einstellungen hat es dann auch funktioniert.
MMrTwgr
See 52 more reviews

User experience

🐞

Reported Bugs

32 issues

Too many "double digits"

Bug

Generates errors

Bug

Phonal Tonal generates random (phantom) numbers

Bug

Never displays anything

Bug

Nothing would get the app to work

Bug

Doesn't pick up tones

Bug

Doesn't work

Bug

Won't work with new iPhone update

Bug

Doesn't detect anything

Bug

Misses about half of the numbers

Bug

Poor performance

Bug

Only usable at full sensitivity, and works poorly then

Bug

Never identified even one digit

Bug

Unhappy with latest version

Bug

On/off switch serves no purpose

Bug

Decoded box works poorly

Bug

Doesn't decode hex

Bug

Doesn't work properly

Bug

Only gets about half of the numbers correct

Bug

Erkennung mangelhaft (poor recognition)

Bug

Couldn't recognise accurately

Bug

Only got the number 0 each time

Bug

使え方 (not usable)

Bug

Doesn't work

Bug

Not working as stated

Bug

Barely works

Bug

Usually nothing detected

Bug

Only detected a couple of digits

Bug

Misses digits when sound is too loud

Bug

Display is too small

Bug

Doesn't support scrolling back

Bug

Stray false digits, especially 1's

Bug
✨

Requested Features

11 requests

Buffering for DTMF better

Feature

Ability to get this work with new iPhone update

Feature

History feature

Feature

Decode hex

Feature

Ability to decode faster (shorter) tones

Feature

More sensitive and flexible detection

Feature

Translation into multiple languages

Feature

See each decode on a separate line

Feature

Continue decoding while app is closed (background operation)

Feature

DTMF tone generator

Feature

Shorten app name to "DTMF"

Feature

FAQ

What does this app do?

This application turns your iPhone into a DTMF decoder. It listens to DTMF tones, also known as telephone 'Touch Tones,' through your device's microphone and displays the numbers being dialed in real-time.

How do I use the app to decode tones?

Simply hold your iPhone's microphone near a clear source of DTMF tones. The app will then display the decoded digits. You can also copy these decoded digits to the clipboard from a text area within the app.

Is this app free to use?

Yes, the application is completely free to download and use. There are no in-app purchases or advertisements associated with its functionality.

What devices is this app compatible with?

The application is designed for iPhones. Specific iOS version compatibility is not detailed, but it functions as a utility on the iOS platform.

Can I use this app for technical purposes?

Yes, the source code for this application is freely available on GitHub. This allows developers and technically inclined users to examine, modify, or integrate the decoding functionality into other projects.