Longpath CW
Morse by ear, on your own key
Free · In‑App Purchases
New: dark mode. Learn Morse by ear with the Koch method, then send on your own Morse key: the open BLE key interface connects any straight key or paddle.
Longpath teaches you to hear Morse code, not to decode it letter by letter. And it lets you practise on the Morse key you already own.
YOUR OWN MORSE KEY
Every telegraphist has a favourite key. With the BLE key interface you plug it straight into Longpath: a straight key, a single paddle or an iambic paddle, connected over Bluetooth to your phone, tablet or Mac. The app produces the sidetone, decodes what you send and shows exactly where your timing drifts, so you train on the very key you will use on the air. The interface is open hardware. Build it yourself from the public ble-key project, or order a parts kit or an assembled key straight from the app. Bluetooth key support is a one-time unlock: buy it once and it stays yours. A key with the optional battery mod runs without a cable, shows its charge level in the app and reconnects on its own after it wakes from sleep.
COPY TRAINING BY EAR
Copy training follows the Koch method. You start with two characters at full speed and add the next one only when you are ready. Because every character is sent at full speed from the first minute, you learn its rhythm as a sound, never as a row of dots and dashes you have to count. That is the difference between reading Morse and hearing it, and it is why counting habits are so hard to unlearn later.
Farnsworth spacing keeps the gaps between characters wide while each character stays fast. You get thinking time without ever practising the wrong rhythm.
CHOOSE YOUR CHARACTERS
Learn characters shows every character with its rhythm and a toggle. You decide exactly which ones are in play, and copy and send training draw from that one set.
SENDING
No key at hand? Practise on the on-screen key, straight or iambic, with the same sidetone and the same decoder.
YOUR PRACTICE, IN VIEW
A practice stopwatch, a daily goal and a statistics view show what you actually practised rather than what you meant to practise.
LIGHT OR DARK
Practising late in a dark room? Choose Light, Dark or System under Settings, and Longpath follows your device the moment it switches.
LOCAL AND PRIVATE
Everything runs on your device. No account, no sign-up, no network connection. Your progress belongs to you, and on Apple devices it follows you to your other devices through your own iCloud.
Longpath is named after the long way round: the path a Morse signal takes around the globe, and the path you take to learn it.
Ratings & Reviews
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Dark mode: choose Light, Dark or System under Settings > Appearance. The choice applies at once and stays on this device; with System the app follows your device the moment it switches, so practising at night no longer means a bright screen. Copy training now brings up the keyboard as soon as a round starts, so you can type what you hear right away.
The developer, Tobias Wissmueller, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .
Data Linked to You
The following data may be collected and linked to your identity:
- Location
- Identifiers
- Usage Data
- Diagnostics
Data Not Linked to You
The following data may be collected but it is not linked to your identity:
- Purchases
Accessibility
The developer has not yet indicated which accessibility features this app supports. Learn More
Information
- Seller
- Tobias Wissmueller
- Size
- 47.5 MB
- Category
- Education
- Compatibility
Requires iOS 18.2 or later.
- iPhone
Requires iOS 18.2 or later. - iPad
Requires iPadOS 18.2 or later. - Mac
Requires macOS 14.0 or later and a Mac with Apple M1 chip or later. - Apple Vision
Requires visionOS 2.2 or later.
- iPhone
- Languages
- English
- Age Rating
4+
- 4+
- Contains
Advertising
Messaging and Chat
User-Generated Content
- In-App Purchases
Yes
- Remove Ads $3.99
- BLE-Key Support $11.99
- Copyright
- © 2026 Tobias Wissmüller