20 WPM CW Morse code trainer

4.0.37

KG9E

4.39

42 reviews

1,000+
Downloads

$3.99

Learn to hear Morse code at 20 WPM instead of memorizing DITs and DAHs at 5 WPM.

20 WPM CW Morse code trainer Screenshot 1 of 9

20 WPM CW Morse code trainer Screenshot 2 of 9

20 WPM CW Morse code trainer Screenshot 3 of 9

20 WPM CW Morse code trainer Screenshot 4 of 9

20 WPM CW Morse code trainer Screenshot 5 of 9

20 WPM CW Morse code trainer Screenshot 6 of 9

20 WPM CW Morse code trainer Screenshot 7 of 9

20 WPM CW Morse code trainer Screenshot 8 of 9

20 WPM CW Morse code trainer Screenshot 9 of 9

Pros & Cons

Offline learning with no internet required
Koch-method, listening-first approach
Multiple input interfaces (RX/ TX) and external keyboard support
No ads or nags and no in-app purchases
Clear progression with 90% proficiency gating new characters

Paid upfront pricing with no free tier or trial
Niche feature set focused on Morse listening; lacks text-based practice or broader lessons common in rivals
Limited to a niche audience interested in CW; may require patience to master for beginners

About 20 WPM CW Morse code trainer

20 WPM CW Morse code trainer is an education app developed by KG9E.

Download Statistics

20 WPM CW Morse code trainer has been downloaded 2.3 thousand times. In the last 30 days, the app was downloaded 0 times.

User Ratings

20 WPM CW Morse code trainer is rated 4.39 out of 5 stars. The rating is based on 42 ratings.

App Information

20 WPM CW Morse code trainer costs $3.99 to download. The APK download size is 5.24 MB. The latest version available is 4.0.37. The last update was on December 1, 2025.

Technical Requirements

20 WPM CW Morse code trainer requires Android 2.1+ or higher. The app has a content rating of Everyone. The app has been available on Google Play December 2016.

Description

For a tasklist to familiarize yourself with this app,

More data about 20 WPM CW Morse code trainer

Price	$3.99
Total downloads	2.3 thousand
Recent downloads	0
Rating	4.39 based on 42 ratings
Ranking	Not ranked
Version	4.0.37
APK size	5.24 MB
Number of libraries	18
Designed for Android	2.1+
Suitable for	Everyone
Ads	NO ads

App Performance Report

Get a detailed PDF report for 20 WPM CW Morse code trainer with download trends, rating history, and key performance statistics — useful for competitive research or tracking your own app. Learn more

Get PDF Report — $29

Alternative downloads for the 20 WPM CW Morse code trainer app

20 WPM CW Morse code trainer compared with similar apps

Common keywords of similar apps

Tap Hold Keypad Button Learned Set String Straight Https Choose Prosigns Abbreviations Interface External Usb Keyboard Proficiency Pool Copy Pad Played Rx Tx Alphanumeric Numbers Large Lower Whitespace Presented Typed Lever Added Sound Device Mouse Show Hide Stats Font Character Code Morse App Characters Wpm Cw Learning Key Send

Keywords missing from this app

Learn Practice Text Words Free Mentor Speed Recent Custom Real Audio Telegraph Lessons Radio Features Trainer Alphabet Paddle Play Translator Chat Messages Letters Section Feedback Word English Pro Frequency Mode Sentences Licence Rooms Sending Screen Translate Ads Version Complete Start

Google Play Rating history and histogram

Downloads over time

20 WPM CW Morse code trainer has been downloaded 2.3 thousand times. Over the past 30 days, it has been downloaded 0 times.

Changelog of 20 WPM CW Morse code trainer

Show changelog

Developer information for KG9E

KG9E

appsKG9E@gmail.com

Website

Legal name:

Address:

Are you the developer of this app? Join us for free to see more information about your app and learn how we can help you promote and earn money with your app.

I'm the developer of this app

Comments on 20 WPM CW Morse code trainer for Android

★★★★★ This is an extremely good app for learning to hear & identify Morse code letters & numbers. My kids like it too. It is very convenient to be able to just pull out my phone and practice for 5 minutes. For the RX training part, I give it 5 stars. For the TX part though, I give it 3 stars because there is a noticeable delay between when I press the screen and hear the tone. Like a "speech jammer", the delay messes up my timing and makes me turn O into K or H into 5. My 8-year-old thinks he cannot key C because it comes out as B or Y. (He actually can key C, but just not in this app.) Maybe I'll try to attach a straight key and see if that removes the delay. Ending on a positive note, there are no ads! I recommend this app and might try the 30 WPM version later.

★★★★★ This app is fantastic. Well-thought-out and intuitive to use. I learned code at 5wpm back in the 70s and litteraly memorized each letter and practiced on a table or an oscillator. Until I passed the novice. Over the years I increased speed until I could copy 18wpm but could never break that barrier. Using this app I now see why and will be a solid 20wpm copy very soon just a little more practice and looking forward to 30wpm app too. 73s K7OI Tucson Az.

★★☆☆☆ Why am I getting security threats about this app?

★★☆☆☆ Not the greatest app for learning koch method. I got this app as an alternative to another koch method app but it isn't that great.

Google Play Rankings for 20 WPM CW Morse code trainer

This app is not ranked

Technologies used by 20 WPM CW Morse code trainer

20 WPM CW Morse code trainer is requesting 2 permissions and is using 18 libraries.

Permissions

Network communication

Google Play license check

Hardware controls

control vibration

Ad network libraries

None found

Social libraries

None found

Development tools

Android Jetpack core

Android Architecture Components

Android Jetpack VersionedParcelable Android Jetpack Annotations Android Library Icon

Android Jetpack Annotations Android Jetpack Widgets Android Library Icon

Android Jetpack Widgets Android Jetpack AppCompat Android Library Icon

Android Jetpack AppCompat AndroidX Loader Android Library Icon

AndroidX Loader

Android Transition Support Library

Android Support Library collections

Android Support VectorDrawable

AndroidX Legacy: Support Library core utils AndroidX Cursor Adapter Android Library Icon

AndroidX Cursor Adapter

AndroidX Local Broadcast Manager

Android Support Library Print

Android Support Library Document File

AndroidX Legacy: Support Library core UI

Android Support Library Async Layout Inflater GNU Kawa Android Library Icon

GNU Kawa

AppBrain is a directory focused on discovering great apps and games. We give statistics, rankings and search options that Google Play and the App Store don't have. All trademarks are owned by their respective owners. AppBrain doesn't offer APKs or binaries, and always lets users install the official version from Google Play or the App Store.

More apps