# Morster — Morse Code Encoder and Decoder

> Morse code encoder, decoder, and learning tool with visual and audio input/output. (iPhone/iPad app by Sunshine Valley Systems.)

- Source: https://appshunter.io/ios/app/morster/id485382815 (this page in markdown: same URL + `.md`)
- Developer: [Sunshine Valley Systems](https://appshunter.io/developer/327149814)
- Category: Utilities, Education
- Price: $3.99
- Rating: 3.60/5 from 5 App Store ratings · 26 written reviews indexed
- Age rating: 4+
- Requires: iOS 8.0 · 78 MB
- Languages: American English
- Released: 2011-12-21
- Data updated: 2026-07-04
- Monetization: paid
- User reviews in markdown: https://appshunter.io/ios/app/morster/id485382815/reviews.md

## What is Morster?

Morster is the ultimate morse code tool for iOS devices. Morster can interpret morse code that is created using the key, light from the camera or sounds from the microphone.  Playback morse code with configurable sound or lighting effects.  Morster is rich with features for learning morse code.

Feature List:

Graphical Interactive Morse Key
Includes short circuit lever
Translate Mode - Translate text to and from morse code
Morse Code reference, several forms of morse code reference
Prosign Ready - Recognize or reference prosign codes
QCode Ready - Recognize or reference QCodes
Dichotomic View - Morse code relationship chart, great for learning
Sticky Note - Display a list of morse code sequences for reference
Playback morse code once or in a loop
Visual Morse Decoder - Use the camera(s) to analyze morse code signals
Audio Morse Decoder - Use the microphone to analyze morse code signals
Visual Morse Communication
Using screen effect or camera flash
Notepad to display morse code
Invert morse key function
Game Center Ready - Morse with friends!
Wifi / Blue Tooth - Morse with friends over Blue Tooth or local wifi network
Configurable audio tone
In depth help file included

Visual Morse Decoder

Morster can use the live camera feed to decipher morse code that is being signaled with light.  The light source could be coming from a light, mirror or another version of Morster.  Use the view finder to focus on the light source, adjust the sensitivity and the morse code will be translated and displayed in the notepad.

This feature is only available on devices that have a camera and running iOS 4 or later.

Speed tests using an iPhone 4 to signal an iPad 2, both running iOS 5, demonstrate decoding speeds upwards of 30 WPM.

Audio Morse Decoder

Morster can use the live audio feed to decipher morse code that is being generated using sound.  The amplitude of the sound is used to trigger the morse key.  When the sound is below the threshold, the key is released.  The sound can be any sound, but must have a distinct beginning and end.  Currently, Morster does not decipher morse code taps, where there is only the beginning of the signal and not the end.

Speed tests using iPhone 4 to signal iPad 2, both running iOS 5, demonstrate decoding speeds upwards of 13 WPM.

For faster decoding of morse code, we suggest professional hardware.

This feature is processor intensive and performance will vary between devices.

Morse Decoding

Morster will analyze the speed that morse code is keyed and automatically adjust to interpret the code.  This allows for slight variances in speed that will still be properly analyzed.

Visual Morse Feature

Devices that have a camera flash can use it to signal with morse code.  When enabled pressing the morse key will also turn on the flash.  When morse code is played back, the camera flash will be used in conjunction with the tone.

A Visual Morse screen can be configured to use the screen to signal with morse code.  The visual feature can use an image of a light bulb or a color.  The shape can be circular or rectangular.  Shutters can be used, with a modifiable shutter count and speed.  This feature is only activated for morse playback.

On supported devices, it is possible to use either feature or both at the same time.

Translate Mode

It is possible to enter text into the notepad and then convert it to morse code.  It is also possible to use the morse code keyboard and enter morse code that can be translated to characters.

Morse Code / Prosign / QCode / Dichotomomic View

A list of morse code characters is provided in list form or as a sticky near the morse key.  A list of Prosigns and QCodes are included.  These are sequences of letters that have special meaning in different morse code applications.  For example SOS = ...---... = Distress Message.

A dichotomic view of morse code shows the relationship between characters of the alphabet.

## Key features

- Graphical interactive Morse key
- Translate text to/from Morse code
- Visual and audio Morse decoding via camera/microphone
- Morse code reference and learning aids
- Visual Morse communication with screen/flash
- Multiplayer Morse communication via Wi-Fi/Bluetooth

## Recent user reviews (10 of 26)

All indexed reviews: https://appshunter.io/ios/app/morster/id485382815/reviews.md

### 2/5 — Nicht mehr zeitgemäß

*2024-06-02, version 1.6*

Die App hat ein paar interessante Funktionen. Leider wird sie vermutlich nicht weiterentwickelt, weshalb mir ein paar wesentliche Dinge fehlen:
1. Die App versucht sich jedes Mal mit dem Game.Center zu verbinden. Was soll das?
2. Bei jedem Start wird man aus Neue gefragt, ob man die Doku lesen will. Ein ‚Don‘t remind me‘ wird einfach ignoriert. Das nervt. 
3. Es gibt nur die Möglichkeit, Texte zu scannen. Weder Copy/Paste, noch Laden/Speichern funktioniert. Da macht sich das Alter der App bemerkbar. 
4. Es werden immer zu jedem Buchstaben die Morse-Zeichen dazu angegeben. Das ist sehr ungeschickt, wenn man genau das üben möchte. Stichwort Spickzettel.
5. Die Funktion mit den Drehrädchen in den Options ist zwar nett, eine Direkteingabe wäre mir aber lieber.
6. Als Lernprogramm würde ich auch Lernkurve und Fehlerquote erwarten. Fehlt leider völlig.
7. Keiner lernt alle Zeichen gleichzeitig. Es sollte die Möglichkeit einer randomisierten Auswahl von bekannten Zeichen in definierbaren Blöcken geben, welche man in den Optionen definiert. Diese sollten dann genau NICHT angezeigt werden, sondern durch hören und eigene Eingabe erlernt werden. 
8. Es gibt beim Morsen Start und Ende Signale. Warum wird hier darauf verzichtet?
9. Um das Morsen mit dem Finger zu üben, sollte es auch die Möglichkeit geben, Texte auf dem Zettel, welche geladen, oder generiert werden, selbst einzutickern. Hier auch wieder mit Qualitätskontrolle. 

Für eine Bezahl-App finde ich, man darf sowas erwarten.

### 1/5 — Crashes Consistently

*2023-06-12*

Every time the user presses the ear icon (to activate audio translation of Morse characters to text) the program crashes. So, I am unable to perform the function for which I purchased the app.

### 5/5 — One of the best

*2022-05-05*

I have had this on all my devices for past 5 plus years. Beautiful graphics. I use it to practice from time to time and love it

### 5/5 — Works fine

*2021-06-05, version 1.6*

One of the best apps to learn Morse. I own an iPhone X. No problem at all.

### 2/5 — Not very good for decoding Morse.

*2021-02-23*

Tried using this app many times for decoding Morse on my iPad. Tried the different settings, including spacing farnsworth, sensitivity etc, etc.  I could only get it to decode about 10 percent of the words/letters.  On the other hand, the program does well for translating text to code.

### 5/5 — Mr

*2016-06-10*

This app was not expensive and I didn't expect it be particularly good. It did however take me by surprise as I feel it is a fantastic little app, I have played about with mobile morse learning tools recently but this one works so well for me as within about three hours I now can reliably morse from A to Z by memory. The best I have come across so far by far.....

### 5/5 — Beautifully Designed, Highly Recommended

*2016-01-12*

This app is gorgeous and the morse input is very responsive. My 9 year old and I have been learning morse code. We've tried a couple of other apps that look ugly and have limited functionality. I decided to give this one a go and am not disappointed. It trains you to time your morse input which is very helpful. I have been using the notepad and trying different phrases using a printed morse alphabet for reference. I am really starting to get a rhythm at around 7-8 words per minute. This app blows the other morse apps away. You have to select a font and dial the font size up in the settings before any type shows up on the notepad or in the settings. I set the font to American Typewriter at first but ignored the size and nothing showed up until I dialed the size up. The default font size is zeroed out. It would be hepful if the font and size were preset but those are my only complaints after an hour of use. My little boy is going to love being able to hear the morse tones as he practices and see the letters next to his morse code to make sure he gets his entries correct. I highly recommend this app. Ignore the negative reviews. This app has a comprehensive instruction booklet. I really feel like I got my moneys worth with this purchase. I read the instructions and am excited to try some of the functions for advanced users as I gain experience. I hope the developer adds a "Rate this App" button somewhere in the settings so users can more easily rate and review this gem.

### 1/5 — No Function

*2016-01-06, version 1.2*

Funktioniert nicht auf dem iPad mit aktuellem IOS. 
FINGER WEG es ist rausgeworfenes Geld. 
Notepad reagiert auf keinerlei Eingabe Methode.

### 1/5 — Described function not available -visual decoder

*2016-01-04, version 1.2*

I was looking for an app compareable with stuff from the Google Play store (Morse Talk).
And the description of "Morster" was really promising.

But the main function converting visual signs into written characters doesn't work at all!
I read the whole manual (PDF) tried all switches, but no characters are shown in the notepad, while "recording" the source.
Also manual typing character into the notepad doesn't work, they are stored, but not visulized!

REally frustrating!
I want my money back!

I am using an iPhone 6 with the latest iOS, maybe some functions are not ported to this version...

If this app would be free of charge OK, but I paid 2,99 Euro!!!

### 1/5 — Atualizem

*2015-11-01, version 1.2*

Atualizem para o iOS9, está todo bugado

## Frequently asked questions about Morster

### What is Morster's price?

Morster is a paid application, priced at $3.99. This one-time purchase grants access to all its features without additional costs.

### What devices support Morster?

Morster is available for iPhone, iPad, and iPod touch devices. It requires iOS 4 or later for its camera-based features.

### How often is Morster updated?

The latest version of Morster is 1.6, last updated on March 5, 2019. While updates have not been frequent recently, the app offers a comprehensive set of features.

### What is the age rating for Morster?

Morster has an age rating of 4+, making it suitable for a wide range of users interested in Morse code.

### Can Morster decode Morse code from light?

Yes, Morster can use the live camera feed to decipher Morse code signaled with light. This feature is available on devices with a camera and running iOS 4 or later.

### Does Morster support multiplayer Morse code?

Yes, Morster is Game Center ready and supports multiplayer Morse code communication with friends over Bluetooth or local Wi-Fi networks.

### What is the decoding speed of Morster?

Speed tests have shown decoding speeds upwards of 30 WPM for visual decoding and 13 WPM for audio decoding on older devices. For faster decoding, professional hardware is suggested.

### Does Morster have in-app purchases or ads?

No, Morster does not feature in-app purchases or advertisements. The $3.99 price provides full access to the application.

## Version history (last 5 releases)

### 1.6 — 2019-03-05

Updated for iPhone X and iPad Pro.
Various bug fixes and optimizations.

### 1.5 — 2016-10-15

Fixed a problem that would display the video preview and the zoom slider in the wrong location for iPhone devices.

### 1.4 — 2016-10-13

Fixed a problem that would crash the app when trying to view the Morse Code list.
Added permission requests for use of microphone and camera.
Updated to support all device sizes.
Various updates and bug fixes.

### 1.3 — 2016-01-19

Various bug fixes and optimizations.
Fixed an issue that would start app with zero font size.
Fixed an issue that would allow the torch to be used on devices that don't have it, causing a crash.
Updated for latest iOS.

### 1.2 — 2013-02-01

Fixed bug that would enable Game Center when unavailable
Added ability to disable Game Center completely
Added missing 'T' in sticky note
iPhone 5 ready
Use swipes to access features
New color picker

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All apps by Sunshine Valley Systems: https://appshunter.io/developer/327149814

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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 2026-07-04.*