This app provides Morse code receiving practice for callsigns, sentences, and two-way contacts. It features adjustable settings, a Koch-style learning mode, and simulated interference for realistic training. Compete with friends on leaderboards and track your progress.
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August 20, 2026
LemurKey offers a Koch-style Learn mode to build speed character by character. It also includes modes for practicing sending Q codes and hearing individual letters at custom session settings.
Yes, LemurKey features a QSO mode with scripted two-way contacts. You can copy each transmission and then reply, receiving live accuracy feedback throughout the exchange.
Yes, LemurKey works offline for practice once installed. The audio runs locally on your device, allowing you to train without an internet connection.
LemurKey provides Word, Callsign, and Sentence modes for copy practice, along with a QSO mode for two-way contacts. It also includes a Chaos Mode with optional QRM, QRN, and QSB for realistic interference.
Users can optionally sign in to sync progress and compete on Strava-style leaderboards. This allows for tracking stats and aiming for the top positions.
You can adjust the Words Per Minute (WPM), character spacing, tone, and volume. The app also offers Stars & Watts for clean copies and a scrubber to replay audio.
Yes, LemurKey's Koch-style Learn mode is designed to build speed character by character, making it suitable for beginners. The adjustable settings also allow users to start at a comfortable pace.
No, LemurKey does not contain advertisements. It is a completely free application with no ads to interrupt your practice sessions.
