Learn Morse code with a complete, free CW trainer built by a ham radio operator. This Morse code trainer is designed for both beginners and experienced hams, with proven training methods to accelerate your learning.
Everything you need to learn CW is free: adjustable audio, character training, Koch method, adaptive practice, instant feedback, callsign recognition, and detailed progress tracking.
FREE FEATURES:
• Characters, numbers, punctuation & prosigns
• Adjustable speed (5–25 WPM) with Farnsworth timing
• Adaptive practice prioritizing characters you struggle with
• Koch method with G4FON and LCWO character orders
• Callsign practice with 31 countries and realistic prefix distribution
• Random letter groups for word-building practice
• Simple QSO exchanges (RST, names, locations)
• Text player: practice with any text you enter or paste
• Reference screen to browse and hear all Morse characters
• Per-character statistics and progress tracking with most confused pairs
• Works offline
OPTIONAL PRO UPGRADE:
• One-time purchase, no subscription
• Head Copy: hands-free practice with spoken answers — perfect for driving or walking
• QSO Generator: realistic POTA, SOTA, and contest exchanges
• Word lists: common words, ham terms, US states, or your custom list
• Custom Koch character order
• Extended speed up to 60 WPM
• Load and play text files
ROADMAP:
• Sending practice with on-screen key and paddle
• Audio input to practice with your own key or radio
Download and start mastering CW — free, complete, and at your own pace.
73 de N5SLN
Latest Version
1.3.0Uploaded by
Hector Contreras Cruz
Requires Android
Android 8.0+
Category
Free Education AppContent Rating
Everyone
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Flag as inappropriateLast updated on Apr 22, 2026
• Confusion pair tracking — see which characters you confuse most often
• Replay tracking — per-item "Most Replayed" and "Most Missed" for Words, aggregate replay/miss rates for Callsigns
• Head copy background audio improved
• Chile callsign support added (31 countries total)
• Fixed rare crash on first launch (DataStore file not found)
• Fixed thread safety issue with audio focus flag and prosign stats map