# Morse Decoder Pro

> Morse code audio translator with manual and automatic decoding features. (iPhone/iPad app by HotPaw Productions.)

- Source: https://appshunter.io/ios/app/morse-decoder-pro/id698226482 (this page in markdown: same URL + `.md`)
- Developer: [HotPaw Productions](https://appshunter.io/developer/285074853)
- Category: Utilities, Education
- Price: $9.99 (on sale, was $29.99)
- Age rating: 4+
- Requires: iOS 13.4 · 1 MB
- Languages: American English
- Released: 2015-02-04
- Data updated: 2026-09-06
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/morse-decoder-pro/id698226482/reviews.md

## What is Morse Decoder Pro?

Translate Morse Code or CW audio to text. 

The HotPaw Morse Code Decoder takes audio input from the microphone or headset input on your iPhone or iPad, decodes Morse Code, and displays the results in text form. It includes both automatic decoding of longer clean signals and manual controls to allow the decoding of more difficult signals in QRM. Decoding parameters that can be manually adjusted include the audio frequency of an optional narrow-band DSP filter, the WPM dot/dash speed used for detecting characters, the threshold level of background noise, and whether Farnsworth timing is to be used for detecting spaces between individual characters. 

The Morse Code Decoder includes a built-in spectrogram to help determine the audio frequency of the Morse Code tones. You can then use the optional narrow-band audio filter to help filter out background noise. If the audio filter is enabled (frequency lock icon locked), it can be set for frequencies in the range of 400 to 1400 Hz. The filter can also be left off in a wide-band mode (frequency lock icon unlocked). Tap the spectrogram to set the audio filter to the frequency of a selected frequency peak. On the iPhone, tap the lock button to the right of the spectrum graph to toggle the filter off and on. 

The Morse code WPM (words per minute) detection speed is automatically adaptive from about 8 to 40 WPM, and can be locked to the current estimated WPM dot speed (WPM lock icon locked). One the iPhone, tap the lock button to the right of the waveform graph to lock and unlock automatic WPM detection. You can also manually set the WPM code speed using the plus and minus symbols that appear in the waveform graph, or the slider control on an iPad. There is a QRQ High Speed WPM Mode which will work better for code speeds in the range of 30 to 80 WPM. (QRQ mode also supports higher frequency dot-dash tones.) 

Please note that it is easy to mis-aim an iPhone's microphone so that its noise cancelling microphone will cancel out any Morse Code tones.  So make sure to aim your iPhone so the the tones show up in the spectrum display.  Also, please use the manual settings if automatic decoding does not adjust to the frequency, WPM or background noise threshold level.

By default, the threshold (the signal level above any background noise required to detect a dot or dash) is set automatically by the AGC. But you can also manually control the threshold setting. On the iPhone or iPod Touch, tap to the left of the waveform graph to switch the manual threshold slider on and off. The iPad version also includes a switch to enable manual threshold control. A Histogram of the tone signal levels with a marker for the detection threshold level are displayed next to the waveform graph. 

In addition to the features of the regular HotPaw Morse Code Decoder, this Pro vesion of the HotPaw Morse Code Decoder also includes a RePlay function, which pauses recording and re-decodes tha previous 1 minute of audio input using the current manual settings.  This is useful if you miss some code because the settings (audio frequency, WPM, and level) were not yet set for the signal you desire to decode.

This Pro version also includes support for some International alphabet characters.

## Key features

- Morse code to text translation
- Automatic and manual decoding modes
- Adjustable audio frequency filter
- Variable WPM speed control
- Background noise threshold adjustment
- Built-in spectrogram
- Replay function for previous audio

## Recent user reviews (4 of 4)

All indexed reviews: https://appshunter.io/ios/app/morse-decoder-pro/id698226482/reviews.md

### 1/5 — Cher pour des E et dès T

*2022-01-21*

20€ pour un décodage très hasardeux. Avec en plus de l’inertie de 2 à 3 lettres. Ça va éventuellement pour celui qui ne li pas du la cw, mais pour l’utiliser en memo zéro. Le gratuit fait la même chose. Donc je conseil le gratuit. Aucune différence entre le zéro € et le vingt € sauf les 20€. Je déconseille. Je soupçonne FrimeurMT d’être le développeur lui-même.

### 1/5 — This app is horrible!

*2019-02-06*

Please refund my purchase! 
This is a non user friendly app. Controls are difficult to use in the main page.

### 4/5 — Cher mais efficace !

*2017-04-17*

Traduit parfaitement et rapidement le morse audio comme promis ! 
Un peu cher pour la simplicité de l'app, mais tant que ça fait son job... :p

### 1/5 — Worst 20$ ever spent

*2016-06-28*

Doesn't work, overpriced, 💩

## Frequently asked questions about Morse Decoder Pro

### Does Morse Decoder Pro have ads?

No, Morse Decoder Pro is ad-free. It offers a clean user experience without interruptions from advertisements.

### What devices is Morse Decoder Pro compatible with?

Morse Decoder Pro is available for iPhone, iPad, and iPod Touch devices, as indicated by its supported devices list.

### How often is Morse Decoder Pro updated?

The app was last updated on May 30, 2021, with version 2.5.5. Update frequency can vary based on developer plans and user feedback.

### What is the age rating for Morse Decoder Pro?

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

### Can Morse Decoder Pro decode high-speed Morse code?

Yes, Morse Decoder Pro features a QRQ High Speed WPM Mode designed to work effectively for code speeds between 30 and 80 WPM, and it also supports higher frequency dot-dash tones.

### How can I adjust the audio frequency filter in Morse Decoder Pro?

You can use the built-in spectrogram to identify Morse code tone frequencies and then tap the spectrogram to set the audio filter to a selected frequency peak. The filter can be toggled on or off, and set within a range of 400 to 1400 Hz.

### What manual controls does Morse Decoder Pro offer for difficult signals?

For challenging signals, Morse Decoder Pro allows manual adjustment of the audio frequency filter, WPM dot/dash speed, background noise threshold, and the use of Farnsworth timing for character spacing.

### What is the price of Morse Decoder Pro?

Morse Decoder Pro is a paid application priced at $9.99.

## Version history (last 5 releases)

### 2.5.5 — 2021-05-30

Bug fixes.

### 2.5.4 — 2020-04-03

Added Dark Mode support, plus enhanced compatibility with more recent iOS releases

### 2.5.3 — 2018-03-04

Bug fix for text scrolling.
The previous 2.5.2 update extended the range of the audio filter setting.

### 2.5.2 — 2018-02-07

Extended the frequency range of the narrow-band audio filter.
Added a warning when suspected noise is being decoded, due to non-optimal settings.
Added a switch to disable the 20 minute auto-off timer.
Bug fixes.

### 2.5.1 — 2017-11-16

Updated for iOS 11 and the iPhone X

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## More apps by HotPaw Productions

- [inTuna Strobe Guitar Tuner](https://appshunter.io/ios/app/intuna-strobe-guitar-tuner/id285074850)
- [Sing-inTuna](https://appshunter.io/ios/app/sing-intuna/id294767812)
- [HotPaw Basic](https://appshunter.io/ios/app/hotpaw-basic/id295464266)
- [MorseTest](https://appshunter.io/ios/app/morsetest/id297010360)
- [XOCubed (3D Tic Tac Toe)](https://appshunter.io/ios/app/xocubed-3d-tic-tac-toe/id303500525)
- [iAutoharp](https://appshunter.io/ios/app/iautoharp/id304091719)

All apps by HotPaw Productions: https://appshunter.io/developer/285074853

## Related topics

[morse decoder pro](https://appshunter.io/ios/topics/morse-decoder-pro)

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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 2026-09-06.*