# Morse Trainer: KR+EN — Learn Morse: Audio & Visual

> Learn Morse: Audio & Visual (iPhone/iPad app by SiU Ahn.)

- Source: https://appshunter.io/ios/app/morse-trainer-kr-plus-en/id6773142404 (this page in markdown: same URL + `.md`)
- Developer: [SiU Ahn](https://appshunter.io/developer/1601025745)
- Category: Education, Reference
- Price: Free
- Age rating: 4+
- Requires: iOS 13.0 · 35 MB
- Languages: American English, Korean
- Released: 2026-05-29
- Data updated: 2026-08-22
- User reviews in markdown: https://appshunter.io/ios/app/morse-trainer-kr-plus-en/id6773142404/reviews.md

## What is Morse Trainer?

Learn international Morse code in both English and Korean alphabets — one app, two character sets, two practice modes.

Most Morse trainers ship English-only. Korean Morse follows a separate 24-character set (14 consonants + 10 vowels), and is used by Korean amateur radio operators on CW (Continuous Wave). Morse Trainer teaches both side-by-side, so bilingual learners and Korean radio operators can practice the alphabet they actually need.

FOUR CATEGORIES
• English: 26 letters (A–Z)
• Korean: 24 characters (ㄱ–ㅎ consonants + ㅏ–ㅣ vowels)
• Numbers: 10 digits (0–9)
• Punctuation: 8 symbols ( . , ? ! / ( ) = )

TWO LEARNING MODES
• Visual mode — animated dot/dash pulses. Watch the rhythm before you hear it.
• Audio mode — pure-tone Morse playback (500–800 Hz, adjustable 5–30 WPM). The same sound used in amateur radio CW practice.

SMART QUIZ
• 4-choice flashcards with instant color feedback (green = correct, red = wrong).
• Spaced repetition (SM-2 lite algorithm) — frequently-missed characters resurface more often.
• Configurable session length (10 / 20 / 50 / 100 questions per session).

DICTIONARY
• Tap any category chip to filter (English / Korean / Numbers / Punctuation).
• Search by letter or Morse pattern.
• Tap to hear the sound and see the dot/dash visualization.

TRANSLATOR
• Text → Morse: type or paste any string, get the encoded Morse line-by-line.
• Morse → Text: decode incoming patterns to readable text.

STATISTICS
• Track session accuracy, time per session, characters mastered.
• Per-category progress so you can see which set needs more drilling.

APP PHILOSOPHY
• 100% offline — no sign-up, no internet connection needed, no cloud account.
• No in-app purchases, no subscriptions, no paywalls.
• Korean + English UI, light + dark theme, system theme follow.
• Adjustable speed (WPM) and tone frequency to match your hearing preference.

WHO IT'S FOR
• Beginners learning Morse code for the first time
• Amateur radio operators preparing for CW practice
• Korean amateur radio licensees needing the Korean alphabet drill
• Scouts working on signaling badges
• Students and hobbyists curious about the original digital encoding

PRIVACY
The app stores progress locally on your device. No personal data is collected, transmitted, or shared. An anonymous advertising identifier is used to serve banner ads; you can reset it or opt out via your device's settings.

CONTACT
Feedback and feature requests: siwooeo@gmail.com


## Version history (last 3 releases)

### 1.0.3 — 2026-08-22

• The bottom banner now sizes itself to the width of your device's screen.
• Fixed a banner that would not reload after a failed request.
• The banner now keeps a gap from the buttons below it instead of crowding them.
• Removed permission requests the app never actually makes.
• Sharing the app and "More apps by this developer" now open the App Store.
• Bundled the localizations that were missing, so text displays correctly on English devices.

### 1.0.2 — 2026-07-07

Improved ad banner stability — fixed the banner disappearing when switching tabs.

### 1.0.1 — 2026-05-29

No release notes.

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| --- | --- | --- | --- |
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All apps by SiU Ahn: https://appshunter.io/developer/1601025745

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-22.*