GPS Anti Spoof vs Watch Morse

Instantly compare observed celestial navigation altitudes with high precision, live calculated altitudes. Shoot the Sun, tap pause in the app, and get instant feedback. Standard version includes data for the Sun, Venus, and two stars. The Pro version of the app is for serious navigation use and includes data for the Sun, Moon, Venus, Mars, Jupiter, Saturn, the 57 standard navigational stars, plus Polaris. Both versions function off-network and at sea however the standard version only works for ten days off-network. The Pro version can function for weeks in the middle of the ocean without network access. This app calculates the exact sextant altitude that should be observed in celestial navigation at sea or on land assuming that the GPS position is correct. No paperwork is required, no tables of corrections. All corrections are included automatically: index error, system time error, dip of the horizon, refraction, temperature and pressure corrections to refraction, altitude above sea level, parallax, and also gravitational deflection of the vertical (a correction of up 2 nautical miles not handled by any other celestial navigation sight-clearing product) are all included automatically. If the GPS position is wrong, due to Spoofing at sea, observations will not match. With this app and occasional quick sextant sights, mariners can reliably detect GPS spoofing. No GPS Spoofing? The app also functions as a celestial navigation trainer: take a sextant sight and immediately compare against the app's display. No paperwork and instant feedback will improve celestial sextant skills in hours instead of days or weeks.  The app works off-network, even in the middle of the ocean. If a network connection is available, the app will download temperature and pressure information automatically. Or weather data can be entered manually, if desired. The ephemeris data is generated from the same JPL numerical integrations of lunar and planetary motions used by the official Nautical Almanac and Astronomical Almanac. All coordinates are accurate to one second of arc, and displayed altitudes are accurate to a tenth of a minute of arc.

The only Morse code app built exclusively for Apple Watch. Learn CW with real haptic vibrations — no sound, no phone needed. Koch method proven by ham radio operators worldwide. Feel every dot and dash on your wrist. WatchMorse uses your Apple Watch's Taptic Engine to teach you real International Morse Code — the same standard used by ham radio operators, aviators, and emergency services globally. Unlike phone-based Morse apps, WatchMorse works entirely on your wrist. No iPhone required during practice. ----------------------------------------------------------------------------------------------------------------------- BUILT FOR APPLE WATCH Taptic Engine haptic feedback for every dot and dash Adjust speed 5 to 25 WPM with the Digital Crown ITU-R M.1677-1 standard PARIS timing — the real deal Works independently, no phone needed iCloud sync across all your Apple devices KOCH METHOD — PROVEN BY HAM RADIO OPERATORS Start with just K and M, unlock characters as you improve Adaptive difficulty: system detects when you plateau and adjusts Reach 90 percent accuracy to advance to next character Mnemonics for every character to accelerate memorization Full 36-character Koch order: letters, numbers, prosigns DAILY MORSE WORD New word every day at 9:00 AM with push notification 300+ words: ham radio Q-codes, aviation, emergency, military NATO alphabet, prosigns, CW abbreviations Earn XP for every daily word completed PRACTICE MODES Learn: study each character with haptic playback and mnemonics Practice: listen and identify — adaptive multiple choice Word Practice: hear a full word in Morse, pick the correct answer Write Challenge: tap dots and dashes to spell what you heard XP AND PROGRESSION 8 levels from Beginner to Ham Radio Pro 10 badges including Week Warrior, Speed Demon, Full Alphabet Daily streak with bonus XP Koch progress grid showing all 36 characters PREMIUM — ONE TIME PURCHASE, NO SUBSCRIPTION Speed Test: 10-character timed test to benchmark your WPM Morse Converter: type any text, hear it in haptic Morse instantly 250+ additional words unlocked including full Q-code library Yours forever — no recurring fees PERFECT FOR Ham radio operators preparing for CW operation Amateur radio license candidates Emergency preparedness and ARES/RACES volunteers Outdoor enthusiasts: hiking, survival, off-grid communication History enthusiasts and telegraph fans Anyone wanting a genuinely rare skill