# DTMFdec

> DTMF tone decoder for iOS, with contact integration and clipboard copy. (iPhone/iPad app by Jérémie Blaser.)

- Source: https://appshunter.io/ios/app/dtmfdec/id363385252 (this page in markdown: same URL + `.md`)
- Developer: [Jérémie Blaser](https://appshunter.io/developer/363385255)
- Category: Utilities
- Price: $2.99
- Rating: 3.40/5 from 5 App Store ratings · 15 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.4 · 1 MB
- Languages: American English
- Released: 2010-03-25
- Data updated: 2026-08-15
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/dtmfdec/id363385252/reviews.md

## What is DTMFdec?

DTMFdec is a highly sensitive DTMF-tone decoder which dynamically adapts to noisy or quiet environments.

Decoded numbers are stored in a list, from where you can perform actions like:
• dial number
• new contact with number
• add number to existing contact
• copy to pasteboard

Especially the "copy to pasteboard" feature is useful when you want to lookup the number in your local phone directory or just google for it.

DTMFdec is able to decode the following digits:
1234567890*#ABCD

Watch a demo video on the web site https://dtmfdecoder.app/demo/

## Key features

- Sensitive DTMF tone decoding
- Adapts to noisy environments
- Stores decoded numbers
- Dial number directly
- Create new contact
- Add number to existing contact
- Copy to pasteboard

## Chart rankings

- #195 in Top Paid · Utilities (US App Store)

## Recent user reviews (10 of 15)

All indexed reviews: https://appshunter.io/ios/app/dtmfdec/id363385252/reviews.md

### 5/5 — Simple, easy to use, works well.

*2023-07-02*

After I reported that the app appeared to have stopped working, the developer worked with me to troubleshoot the problem. Turns out that the microphone access got inadvertently disabled, so the developer added a check for that.

### 1/5 — Doesn’t work, don’t download

*2022-10-20*

Can’t upload audio to app and the mic function doesn’t work.

**Developer response:** Hi, I’m sorry to hear you're having issues. Please contact me through the support link and allow me to investigate this. There might be an issue with your device.

### 1/5 — App does not work

*2021-05-10*

Total waste of money. App disappears while trying to record or when you press stop. Never recorded anything.

**Developer response:** Hi, sorry to hear you're having issues.
I've just released an update that should fix the crashes.
If you continue having issues, please contact me through the contact form linked in the description.

### 1/5 — Dont use it. It crashes on ios 14 and up

*2021-04-29*

It doesnt work on 14.3

**Developer response:** Hi, sorry to hear you're having issues.
I've just released an update that should fix the crashes.
If you continue having issues, please contact me through the contact form linked in the description.

### 5/5 — Multi-Tennant Doorphone

*2021-04-15*

We had a Multi-Tennant doorphone that transmitted DTMF from the door station to the controller in the basement.  We needed to determine the transmitted numbers.  This product worked very well, and showed us what digits were sent.  From there we could make changes to the system for proper operation. Great product, and a time saver!

### 1/5 — Not recommended

*2018-10-11*

Doesn’t decode fast tones. Basically worthless.

### 1/5 — Not worth the money

*2018-07-10*

Listened in to a fire alarm panel dialing a telephone number (10 digits). Display came up having decoded "6". Not 6 of the 10 digits.

"6". That is what it decoded out of 10 digits dialed. 1 digit. Useless.

### 1/5 — Nach Installation der App geht mein Handy nicht mehr

*2017-12-18, version 1.2*

Eine riesige Schweinerei, Und diese App handelt sich es um einen Trojaner also irgend einen Virus nach der Installation sind alle Daten weg

### 4/5 — Works Perfect - but old fashioned

*2014-04-15, version 1.1*

It does what it is supposed to. 
But no iPhone 5 support...;-(

(It's working, but in 960x640)

That would be the 5th star!

### 5/5 — Perfect !!!

*2012-08-26, version 1.1*

This App. works absolutely perfect :-)))

## Frequently asked questions about DTMFdec

### What is DTMFdec?

DTMFdec is a utility application for iOS devices that decodes Dual-Tone Multi-Frequency (DTMF) signals. It is designed to be sensitive and adapt to various audio environments, including noisy ones.

### What digits can DTMFdec decode?

DTMFdec can decode the following digits: 1, 2, 3, 4, 5, 6, 7, 8, 9, 0, *, #, A, B, C, and D.

### What actions can I perform with decoded numbers in DTMFdec?

Once a number is decoded, you can perform several actions directly from the app. These include dialing the number, creating a new contact with the number, adding the number to an existing contact, or copying the number to your device's pasteboard.

### How much does DTMFdec cost?

DTMFdec is a paid application. It is available for purchase at $2.99.

### Is DTMFdec available on Android?

Based on the provided information, DTMFdec is supported on iPhone and iPod devices, indicating it is an iOS-exclusive application.

### How often is DTMFdec updated?

The latest version of DTMFdec, 1.5, was last updated on May 25, 2023. This suggests a relatively infrequent update cycle.

### What is the age rating for DTMFdec?

DTMFdec has an age rating of 4+, making it suitable for a wide range of users.

### Does DTMFdec have ads?

No, DTMFdec does not contain advertisements. It is a paid application without any in-app purchases or ads.

## Version history (last 5 releases)

### 1.5 — 2023-05-25

added prompt for missing microphone permission

### 1.4 — 2023-04-07

- added support for Apple Silicon Macs

### 1.3 — 2021-05-22

added support for new devices

### 1.2.1 — 2019-03-21

added support for new devices and iOS 12

### 1.2 — 2015-02-09

- enhanced iOS 8 compatibility
- support for larger screens
- updated App Icon

## Apps similar to DTMFdec

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [DTMF Decoder](https://appshunter.io/ios/app/dtmf-decoder/id306195275) | 2.5 (17) | $0.99 | Utilities |
| [Call Macro Recorder](https://appshunter.io/ios/app/call-macro-recorder/id6748704802) | — | Free | Utilities |
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| [Blue Box](https://appshunter.io/ios/app/blue-box/id391832739) | 5.0 (3) | $4.99 | Utilities |
| [FT8 Decoder](https://appshunter.io/ios/app/ft8-decoder/id1592847401) | 4.3 (8) | $1.99 | Utilities |
| [DTMF Dialer Tool](https://appshunter.io/ios/app/dtmf-dialer-tool/id6748663059) | 4.5 (13) | Free | Utilities |

## More apps by Jérémie Blaser

- [BeaconTrap](https://appshunter.io/ios/app/beacontrap/id776889158)

All apps by Jérémie Blaser: https://appshunter.io/developer/363385255

## Related topics

[dtmfdec](https://appshunter.io/ios/topics/dtmfdec) · [dtmf decoder](https://appshunter.io/ios/topics/dtmf-decoder) · [decoder number](https://appshunter.io/ios/topics/decoder-number) · [dtmf](https://appshunter.io/ios/topics/dtmf)

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-15.*