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Store listing
By MARIUSZ KAZIMIERZ KANIA, from the App Store
Description by MARIUSZ KAZIMIERZ KANIAWritten by the developer, not by AppBrain. Click to read.
Build confidence in Morse code with MorseOSLAB: a practice space for listening, sending and simulated amateur-radio contacts.
START WITH THE FREE EXERCISES Use Free keying, Copy One, Copy Two, Morse Echo, Basic rhythm, Opposite patterns, Alphabet and digits, Listen to text with one own set, and QSO Partner with callsign and report exchange. On-screen and compatible MIDI key input are available in the free version.
PRACTISE SENDING AND RECEIVING Follow highlighted text, repeat difficult groups and compare your answer with the target. Adjust character speed, effective Farnsworth speed, tone and word spacing. Supported reception exercises offer random tone and speed ranges and switchable propagation effects.
LISTEN AND LEARN Listen to your selected text with live letter tracking. Morse Echo plays a word in Morse, spells it with a system voice, then repeats it in Morse. Spelling languages include English, German, French, Italian, Spanish and Polish; available voices depend on those installed on your device. The interface is in English.
SIMULATED QSO Practise offline contacts in QSO Partner, POTA, SOTA, Contest, WWFF and DX activities. In QSO Partner, choose the exchange fields and follow the details the partner has understood. These are local simulations, not real radio contacts or an online chat service.
HST-INSPIRED TRAINING Train with Receive groups, Transmit groups, Callsign sprint and Speed ladder. Review mistakes and compare your local session and overall results. These are training scores, not official championship rankings.
YOUR KEY, YOUR CONTENT Use the on-screen straight key or paddles, or an iOS-compatible USB MIDI keyboard, controller or Morse-key interface. Select straight-key, Iambic A, Iambic B or Ultimatic operation and paddle assignment. Compatible hardware and an appropriate connection are required for external input; no proprietary accessory is required.
Library starts with QSO, Most popular english and Reports sets. The full version lets you manage named word sets and texts, paste or import text files, edit sets and share them.
ONE-TIME FULL-VERSION UNLOCK One optional non-consumable in-app purchase unlocks the remaining activities, complete Library and QSO exchange fields. There is no subscription. Restore purchases is available in Settings.
Practice data stays on your device. No app account, advertising, tracking or microphone recording is required.
MorseOSLAB is an independent training app and is not affiliated with POTA, SOTA or WWFF.
MorseOSLAB is an education app developed by MARIUSZ KAZIMIERZ KANIA.
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App Information
MorseOSLAB is freely available from the App Store. The app size is 5.42 MB. The latest version available is 1.9.172. The last update was on November 14, 2026.
Technical Requirements
The app has a content rating of Everyone. The app has been available on the App Store since November 2026.
MorseOSLAB is made and published by
MARIUSZ KAZIMIERZ KANIA.
AppBrain is an independent app data site and isn't affiliated with MARIUSZ KAZIMIERZ KANIA.
The app name, icon, screenshots and description belong to MARIUSZ KAZIMIERZ KANIA and are shown as published on the App Store.
Each subscription will automatically renew 3 days before the expiration date for
the same time period. Subscriptions can be cancelled at any time before the renewal.
