A fully-offline amateur-radio trainer built for the wrist — a straight key you can actually send with, the phonetic alphabet, 52 Q-codes and your Maidenhead locator. It runs on Apple Watch and Wear OS on its own, with no phone needed, and on iPhone too. No account, no logging, and no network access of any kind.
One round key you press and hold — not two buttons that pick a symbol for you. A short hold is a dit, a long hold a dah, so the app grades your fist rather than your aim.
dit = 1200 / WPM, with proper Farnsworth spacing that stretches the gaps and leaves the characters alone. Character speed, overall speed and sidetone pitch are all yours to set.
The tone is generated in code, not from a clip, with a 5 ms raised-cosine ramp at each end so a key-up never clicks — no matter when your finger lifts.
Every ICAO/NATO letter and number, spoken on tap. One press on My Callsign spells yours out loud — the pre-QSO warm-up you actually use.
Each with its question form, its statement form, and a note on how it is really used on air — that QRZ means "you are being called", not "what is your callsign". Hear it spoken, or hear it sent in CW.
All four levels — field, square, subsquare and extended square — computed on the device from one GPS fix. A level-4 square is about 850 × 460 m, well inside GPS accuracy.
A complication on Apple Watch, a tile on Wear OS. Your last locator, with how old the fix is — because a glanceable square should never pretend to be live when it isn't.
One toggle, the whole app. Dark costs less battery on an OLED watch, which is why it exists.
No account, no sign-up, no logging, no analytics. The Wear OS build does not even request the internet permission — it is incapable of sending anything anywhere.
Yousuf AL Balushi (A41UX) started his Ham Radio journey in November 2024 as an official member of The Royal Omani Amateur Radio Society (ROARS).
Ham Training is the tenth app in the Unixeer™ portfolio, and the first built for the wrist — a small, offline trainer for the four things worth having a tap away: your fist, your phonetics, your Q-codes and your grid.
"Send it yourself, on the wrist." 🔘