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About this app
📻 DS1UOV’s Morse Trainer
Train Morse code reception in a structured way using the Koch method, designed for learners who want measurable progress and practical CW listening skills (this app does not include an AI opponent to play against).
✅ KOCH METHOD, DONE RIGHT
Start with a small character set, build accuracy, then unlock the next character only when you are ready.
Your level system is tied to performance, so each step feels earned and stable rather than rushed.
🎯 LEVELS, PROGRESS, AND SMART REVIEW
See your current level, max unlocked level, and overall learning progress at a glance.
Select any unlocked level to review earlier characters and strengthen weak points before moving forward.
A clear “next target” flow helps keep training focused and consistent.
⚙️ CUSTOM AUDIO & SESSION SETTINGS
Tune your practice to your ears and your goals: adjust training speed settings and pick a tone frequency that is comfortable for long sessions.
Use presets (beginner to expert) when you want a proven setup without manual tweaking.
Each session is built to keep your attention on what matters—recognition accuracy under realistic timing.
⌨️ FOCUSED INPUT EXPERIENCE
Practice with a dedicated on-screen character grid that only shows the characters available at your current level, reducing accidental inputs.
Pause and resume sessions cleanly, with visible timing/progress indicators so you always know where you are in the run.
Optional physical keyboard input support lets you train like real operating, especially on tablets or with external keyboards.
📊 RESULTS THAT HELP YOU IMPROVE
After each session, review a detailed results screen with accuracy (%) and clear pass/fail feedback for level advancement (90% threshold for unlocking the next character).
Compare what was sent vs what you typed, and inspect mistake patterns to understand which characters you confuse most often.
Retry the current level immediately, return home, or continue with the newly unlocked character when you qualify.
🧹 SAFE RESETS, WHEN YOU NEED THEM
Reset only Koch progress to restart learning from level 1 while keeping your app settings, or reset all settings back to defaults.
This makes it easy to re-train from scratch, test new configurations, or share the device with another learner.
Start today
Make steady, data-driven progress in Morse reception with a modern UI and a methodical training flow built around real learning principles.
User Reviews
I think this app could be extremely helpful training in Morse Code using the Koch method. However, whenever I start a new session, the first character is always garbled, so I have no idea what it is. This is just a rough way to start and it's hard for a beginner to catch up. If you could add a delay timer in your code whenever a new session is started, this might solve the issue?
How to Download DS1UOV's Morse Trainer w/ Koch APK
- Enter the package name
com.commonsourcelab.learnMorseWithKochon the APK Downloader. - Select your device architecture (ARM64 recommended for modern devices).
- Click Download to get the merged APK file.
- Transfer and install the APK on your Android device.
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Security & Signature Verification
This APK download is 100% safe. We verify that the cryptographic signature of the file matches the official developer credentials. No modifications or adware are injected.
