Star Nav lays out a five-point course from your start point, gives you the magnetic azimuth, distance and pace count for every leg, and lets you walk it with an on-screen lensatic compass. A parking lot, a park or a drill field will do.
Five legs between the minimum and maximum distance you set, including the walk back to your start point. Alternates between a classic star and a random loop so you can't memorize it.
Magnetic azimuth and back azimuth for every leg, corrected for declination where you're training: pick your installation or use your GPS. Computed from the World Magnetic Model for today's date.
An on-screen lensatic compass that turns with your phone. Step through the legs and turn until your azimuth sits under the index line.
Calibrate your pace count over a measured 100 meters with GPS, and every leg shows how many paces to walk.
Enter your start point's 8-digit grid and get the 8-digit grid for every point on the course, for plotting on a map or checking your work.
Open it once with signal and it keeps working without any. Your course, pace count and location are saved on your phone.
It opens full screen like any other app. The compass asks for motion access the first time on iPhone; allow it.
Unofficial training aid. Star Nav is not an Army or DoD product and is not doctrine. Follow your cadre, your unit's standards and TC 3-25.26, Map Reading and Land Navigation.
A phone is not a lensatic compass. Phone compasses can be off by several degrees near vehicles, rifles, rebar or other electronics. Use it to practice, and check it against a real compass before you trust it.
Set your location. Azimuths are only correct for the declination you choose. Declination across the U.S. runs from about 15° west to 15° east, so a course built for one post will be wrong at another.
Your data stays on your phone. No accounts and no tracking. GPS is used only on your device, to set declination and calibrate your pace count.