01
Koch method
Keep the speed practical. Add one character at a time.
Listen at practical character speed from the beginning, adding symbols only as mastery grows. Immediate keyboard entry connects sound recognition to physical response.
All apps
Education
iOS · Android
DS1UOV's Morse Trainer
Koch training where accuracy unlocks the next character
Build CW reception from a small character set, unlocking the next symbol only after consistent accuracy proves you are ready.
Free download code for studentsKoch
Method
90%
Target accuracy
Local
Progress
Screen story
4 SCENES
Read what the app does, screen by screen.
Real App Store scenes are sequenced around the feature and its context. Each image is captioned with the role of the screen in view.
02
Error analysis
Look beyond the score to the symbols being confused.
Compare transmitted code with entered answers and see exactly which symbols were mistaken for others. The next step toward the ninety-percent target becomes specific.
03
Audio control
Tune WPM and tone to the operating conditions ahead.
Adjust character speed, effective speed, tone frequency, session length and learning level independently, using one training system from first symbols to thirty WPM.
Made for
People with a particular need.
01
Beginners starting CW reception
02
Learners eliminating recurring symbol confusion
03
Structured learners who value measurable progress
Privacy & note
Training works without an account, with progress stored locally on the device.
FAQ
Asked before downloading.
- Size
- 38 MB
- Age rating
- 4+
- Minimum iOS
- 15.6
What is the Koch method?
You keep a practical character speed from day one and expand only the symbol set, so you never learn to depend on slow code.
How does the next level unlock?
A new character unlocks only once you hit the target accuracy. Sent and entered text are compared so confusion patterns stay visible.
Can I revisit earlier stages?
Return to any unlocked set to strengthen weak symbols, with progress and settings resets kept separate.
Get the app
Koch training where accuracy unlocks the next character
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