Morse Code App
Add the full set of Morse tools to a phone, tablet or laptop right from the browser, then keep using them when there’s no Wi‑Fi.
Opens Unscramble Words 4U, our free word-puzzle site, in a new tab. Free, with no sign-up.
What it does
The Morse Code App from Unscramble Words 4U is a web app, not an app store download. Installing it gives the Morse tools their own icon and window, without the browser’s address bar. Inside you get the translator (which can beep, flash, vibrate or save WAV files), the alphabet chart and the individual letter and number pages, the decoder with its key, microphone and file modes, and the full trainer, including lessons, tests and badges, the daily challenge, practice radio contacts, the Koch course and audio sets.
After installation, all of this runs with no internet connection, which helps on field trips, in classrooms with spotty Wi‑Fi or on devices that aren’t allowed online. There is nothing to pay, no sign-up and no in-app purchases. According to the page, the English version uses under 2 MB, updates itself whenever it opens while online, and shows no ads when offline. Links inside it to the developer’s other sites, including Classfern, still need a connection.
How to use it
- Go to the Morse Code App page and press the button to get the free app.
- In Chrome, Edge or on Android, the browser usually asks you to confirm – accept and you’re done.
- On iPhone or iPad, open the page in Safari, tap Share, choose Add to Home Screen, then Add.
- On a Mac in Safari, open the File menu and pick Add to Dock.
- Desktop Firefox doesn’t support installing sites as apps, but the page explains that the Morse pages are still saved for offline use if you bookmark them. For an icon, use Chrome, Edge or Safari.
- Open the new Morse Trainer icon. To remove it later, uninstall it like any app and clear the site’s data in your browser.
More tips
- Trainer scores are saved on each device, so assign students the same tablet each time if you want them to track progress.
- The translator is also available in ten other languages, each with its own app – helpful for English learners and world language classes.
Ideas for the classroom and homeschool
- Grades 3–5Outdoor learning: take installed tablets outside or to camp and send flashlight-style light messages across a field.
- Grades 6–8Computer science: discuss what ‘installing’ a web app means, where the offline copies live and how it differs from an app store download.
- Grades 6–8History of communication: compare learning Morse offline on a phone with how telegraph operators trained, and discuss what has and hasn’t changed.
- Grades 9–12Digital citizenship: read the app’s explanation of what it saves on the device and evaluate it the way you would a privacy policy.
Questions
Is it really free?
Yes. The page says there is no charge, no account and nothing to buy inside it. It is the same set of Morse tools as the website.
What does it store on the device?
Offline copies of the Morse tools’ pages and scripts, held in the browser’s storage. The page says this holds no personal information. Trainer settings and scores are stored in the browser too.
Does it use the microphone?
Only if you start the microphone decoder or pick microphone sending in the trainer – and the browser asks your permission first. The page says the sound is decoded on the device and not recorded.
Do I need to update it?
No. It fetches the newest pages automatically whenever it opens with a connection.
Opens Unscramble Words 4U, our free word-puzzle site, in a new tab. Free, with no sign-up.
Check your district’s rules on installing apps on shared devices. Light modes can affect people with photosensitive epilepsy.