# DTMF Decoder vs On

The clearest difference is price: On at Free against DTMF Decoder's $0.99. On also leads on rating (4.4 vs 2.5) and update cadence (monthly vs every 19 months). DTMF Decoder's advantage is iOS requirement (11.0 vs 15.6). On ratings volume, ads, in-app purchases and monetization model there is nothing between them.

On is free to download; DTMF Decoder costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

On holds the better App Store score, 4.4 against 2.5. Both are backed by a comparable volume of ratings — 17 and 13 respectively. Written reviews point the same way: 40% of DTMF Decoder's written reviews are positive against 50% of On's.

DTMF Decoder ships an update every 19 months, On monthly. The most recent releases landed on October 15, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | DTMF Decoder | On |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Rating | [2.5 (17 ratings)](https://appshunter.io/ios/app/dtmf-decoder/id306195275/reviews) | **[4.4 (13 ratings)](https://appshunter.io/ios/app/on-air-net-scraper/id1536271710/reviews)** |
| Number of ratings | **17** | 13 |
| Positive reviews | 40.4% of reviews | **50.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 19 months | **Monthly** |
| Monetization | Free | Free |
| Size | 5 MB | 30 MB |
| Requires iOS | **11.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod, Mac** |
| Age rating | 4+ | 17+ |
| Developer | [dreadtech.com](https://appshunter.io/developer/306195278) | [Christopher Robson](https://appshunter.io/developer/1536271712) |

## What reviewers say

### DTMF Decoder

[App page](https://appshunter.io/ios/app/dtmf-decoder/id306195275)

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.

**Highlights:** DTMF tone decoding, Microphone input, Displays dialed numbers, Copy to clipboard, Source code available

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### On

[App page](https://appshunter.io/ios/app/on-air-net-scraper/id1536271710)

This tool assists amateur radio operators with managing on-air nets and check-ins. It offers real-time messaging, email integration, and detailed operator information retrieval. The app supports multiple simultaneous sessions and configurable displays for efficient communication and tracking.

**Highlights:** Real-time net check-in tracking, Instant messaging (AIM) sessions, Integrated email client, Configurable information displays, QRZ/QRZCQ call sign lookup, WebSDR audio streaming, QRZ Logbook integration

**In-app purchases:** none


## Frequently asked questions

### Is DTMF Decoder free?

DTMF Decoder costs $0.99, with no in-app purchases.

### Is On free?

On is free to download, with no in-app purchases.

### Which has better reviews, DTMF Decoder or On?

On is rated higher. DTMF Decoder averages 2.5 out of 5 from 17 ratings, while On averages 4.4 from 13 ratings.

### Do DTMF Decoder or On have ads?

Neither DTMF Decoder nor On shows ads.

### Which is updated more often, DTMF Decoder or On?

DTMF Decoder ships an update every 19 months, and On monthly. Most recently, DTMF Decoder was updated on October 15, 2026 and On on September 30, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*