DTMF Decoder vs DTMFdec
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
DTMF Decoder
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
Read full descriptionHide full description
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
DTMFdec
This utility decodes DTMF tones, even in noisy conditions. It stores decoded numbers for easy actions like dialing, creating contacts, or copying to your clipboard for further lookup.
- 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
Read full descriptionHide full description
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/
Screenshots
Verdict
The clearest difference is rating: DTMFdec at 3.4 against DTMF Decoder's 2.5. DTMFdec also leads on chart position (#195 vs unranked). DTMF Decoder's advantage is price ($0.99 vs $2.99) and ratings volume (17 vs 5). On review sentiment, update cadence, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
DTMF Decoder costs $0.99 and DTMFdec $2.99 up front. Neither carries in-app purchases, so what you see is what you pay.
DTMFdec holds the better App Store score, 3.4 against 2.5. Both are backed by a comparable volume of ratings — 17 and 5 respectively. Written reviews complicate that: 40% of DTMF Decoder's written reviews are positive against 33% of DTMFdec's, so the app with the better star average is not the one people write more warmly about.
DTMF Decoder ships an update every 19 months, DTMFdec every 25 months. The most recent releases landed on September 23, 2026 and August 15, 2026 respectively.
| Parameter | DTMF Decoder | DTMFdec |
|---|---|---|
| Price | $0.99 — better | $2.99 |
| Rating | 2.5 (17 ratings) | 3.4 (5 ratings) — better |
| Positive reviews | 40.4% of reviews — better | 33.3% of reviews |
| Number of ratings | 17 — better | 5 |
| Update frequency | Every 19 months — better | Every 25 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free — better | Paid |
| Best chart rank | — | #195 — better |
| Devices | iPhone, iPod | iPhone, iPod |
| Requires iOS | 11.0 — better | 12.4 |
| Further details — not scored | ||
| Size | 5 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | dreadtech.com | Jérémie Blaser |
Customer experience
DTMF Decoder
DTMFdec
In-app purchases
DTMF Decoder
No in-app purchases
DTMFdec
No in-app purchases
