StarPilot vs Speedometer and G

The state-of-the-art solution to navigation computations on your iPhone or iPod touch. StarPilot does celestial sight reductions of all bodies using high-precision internal almanac, plus mathematical and graphic solutions for position fixes, great circle, rhumb line, traverse and composite sailings, all current problems, piloting solutions, and much more...including lunar distance method of finding GMT from the sky and a unique graphical Sight Planner, and the new Sight Analyzer function that helps you get the most accurate results from a series of sights. The StarPilot is the self sufficient state of the art solution to ocean navigation, fully up-gradeable with free upgrades available via Internet download, easy to use operation from logical menu lists, plus illustrated context sensitive help with practice exercises. The StarPilot requires no external resources to complete its computations. Internet access is not required to use this program or to access any of its help files. General program design features... that save time, keystrokes, and minimize errors - Easy to use menu-driven interface - Stored settings of commonly used values - All bodies and star names stored internally, no need for separate lists - DR functions integrated with the celestial functions - Convenient DR updating by log or time - Input courses as true or magnetic - Convenient time input, with or without zone description and watch error - Graphing calculator plots LOPS, Fixes, DR positions, and Star maps - Program can be easily updated to incorporate latest version and features - Custom menu bar for quick navigation to often-used functions Sight Planning - Sunrise, Sunset, times and bearings (amplitudes) - LAN, time, Equation of time, Hs max at LAN1 - Nautical and Civil twilight times, and LHA Aries at midpoint between them - Moonrise, Moonset, Moon phase, and Moon age - Precompute specific values of Hc and Zn for any body - Planet and Star ID by observed height and bearing - SIGHT PLANNER function plots full sky showing moon, stars, and planets in Radar-like display of heights and bearings. Set Hc min/max and max number of stars before computation. Set cursor and click to read the actual height and bearing of a plotted body. - Special fast almanac mode allows full sky plot - Display internal list of 173 stars by name, brightness, and location - Unique BEST SIGHTS function selects the optimum triads of sights for any sky Sight Reduction - Optional modes for sequential sights using repeated settings or unrelated individual sights - Perpetual almanac accurate to 2100+ - Historically accurate almanac data to 16th century - Sight reduction of Sun, Moon, Mars, Venus, Jupiter, Saturn... plus Mercury! - Sight Reduction of 173 stars plus Polaris - “Assumed positions” read directly from DR section without extra input - View intercepts (a-values) with or without course and speed corrections - Full input data displayed with results to check for errors - Special center-body mode for artificial horizon data - Dip-short mode for practice at shorelines Celestial Fixes - Unique SIGHT ANALYZER fits a sequence of sights to the right slope for optimum sight selection - All fixes corrected automatically for course and speed as needed - Fix accuracy independent of DR accuracy in all cases - Plots LOPS with live cursor position display - Fix computed by USNO algorithm in the Nautical Almanac - Zoom in on plot to see where computed fix is located - Fix can be obtained by graphic selection from the LOP plot - Automatic display of DR-to-Fix range and bearing - Optional automatic update of DR after fix - Display new course and distance to stored destination

See your speed. Make it yours. Speedometer puts your current GPS speed front and centre with large digits and a clean display. Use it on iPhone or iPad, or check your speed from your wrist with the standalone Apple Watch app. YOUR SPEED AT A GLANCE • Choose km/h, mph, knots or m/s. • See GPS status when the signal is weak or unavailable. • Use the iPhone and iPad display in portrait or landscape. CHOOSE YOUR DASHBOARD On iPhone and iPad, choose G-force, trip statistics or no module for a simple speed display. Change your choice in Settings or explore the options in the interactive introduction. YOUR TRIP IN NUMBERS See top speed, moving average, distance and time in motion. Stops are excluded from the average. Your totals stay saved between app launches and module changes until you reset them. A confirmation helps prevent accidental resets. Trip measurement runs while the app is open in the foreground with reliable GPS, regardless of your selected module. Measurement pauses in the background, during the introduction or when GPS is unreliable. Gaps are not counted as distance or time. A DISPLAY THAT FITS YOU Choose from five colour themes and four digit styles. Follow your device’s light or dark appearance, or keep the app always light or always dark. YOUR SPEED ON YOUR WINDSHIELD HUD mode mirrors your speed and selected module so their reflection in your windshield reads the right way round. Place your device securely on the dashboard with the screen facing the glass, keeping your view clear. Reflection visibility depends on the windshield, screen brightness and ambient light. Set it up while parked. EXPLORE MOTION On iPhone and iPad, view current and peak G-force alongside roll, pitch and yaw. Measure overall acceleration or an individual device axis. Reset the peak and orientation reference whenever you need to. Motion features require an available device motion sensor. SPEED ON YOUR WRIST The Apple Watch app measures speed independently of your iPhone. Choose your unit on the watch and glance at your speed while walking, running, cycling or boating. Trip statistics and dashboard modules are available on iPhone and iPad. GET STARTED YOUR WAY An interactive introduction helps you explore the controls and personalise the display. You can revisit it from Settings. On iPhone and iPad, add a Siri shortcut for your current speed. Speed measurement requires location access and a usable GPS signal. Keep your attention on your surroundings and adjust the app only when it is safe to do so.