J42 Morse Code Trainer

Name: J42 Morse Code Trainer
Rating: 3.5 (33 reviews)
Author: Java42 Mobile

By: Java42 Mobile App

App for novice or experienced ham radio operators interested in Morse code.

Overview

Google Play Store

Downloads

3,981

Data as of 2026-08-25

Rating:

3.50

(33)

Version:

v122.23.01.21-L

Last updated: 2023-01-22

Ranking

#764,088 ▼ 1,625

Overall

Features & Capabilities

"J42 Morse Code Trainer" is an Android app designed for novice and experienced ham radio operators to improve their Morse code skills. Users can listen to CW characters at various speeds and formats, with adjustable tone frequencies. It offers over 100 character sequences, optional alphanumeric and voice cues, and a loop mode for continuous practice. With a visual training option and in-app feedback for suggestions, this app is perfect for anyone looking to enhance their Morse code abilities.

User Growth & Download Statistics

App

By:

Downloads:

Rating:

Version:

v122.23.01.21-L Last updated: 2023-01-22

Version code:

122

Creation date:

2020-02-06

Publisher country:

Permissions:

com.google.android.gms.permission.AD_ID Moderate risk
android.permission.FOREGROUND_SERVICE Low risk
android.permission.INTERNET Low risk
android.permission.POST_NOTIFICATIONS Low risk
android.permission.RECEIVE_BOOT_COMPLETED Low risk
android.permission.WAKE_LOCK Low risk
com.google.android.c2dm.permission.RECEIVE Low risk
com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE Low risk
android.permission.ACCESS_NETWORK_STATE Safe

Size:

9.27MB

Email:

ja*****@gmail.com

URLs:

Full description:

Source:

Google Play Store

Data ingested on:

2026-08-25

Compare stats and ranking:

Ranking

# 764,088 ▼ 1,625

For Developers

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Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.

Developed by:

Java42 Mobile

Google Play Store

https://play.google.com/store/apps/details?id=com.java42.tools.j42morsecodetrainer

Email:

ja*****@gmail.com

Publisher Change History

2025-07-04: an*****@java42.com to ja*****@gmail.com

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User Reviews

How in the heck is this supposssd to work ? how do ypu start ? got as far as my call sign but cant figure the resf out. Look elsewhere for a code trainer

BO*****, 2022-01-02

Latest version audio quality vastly superior to previous versions. They also added two volume controls. One for tones, one for voice. Super easy to balance tone/voice now. Looks like the pop filter has been removed but I never used that function. There are a few extra modules to select but basically the same set. Custom characters usage is unchanged.