Polarispec

Find quiet spots outdoors. Read magnetic north, track field strength in µT, and spot interference from speakers, mounts, and metal nearby.

Polarispec turns your iPhone into a pocket compass and geomagnetic field viewer for camping, hiking, and outdoor curiosity. BEARING DIAL • Live heading with a clear dial and cardinal directions • Switch between magnetic north and true north (location used only for pointing) • Accuracy hints and calibration guidance when the sensor needs a figure-eight FIELD PULSE • Total field strength in microtesla (µT) • Earth-field reference band (about 25–65 µT) for quick context • Optional XYZ vector bars for raw magnetometer components • Save samples with optional notes INTERFERENCE SWEEP • Watch a live waveform while you walk around camp or indoors • Interference score highlights when readings leave the natural band • Mark quiet spots below your threshold for tents, sleep, or gear placement • Built for exploration—not a substitute for professional EMC or safety tools SURVEY LOG • Keep heading, field, and interference records on this device • Share as plain text or delete anytime • No account, no cloud sync, no ad tracking GEOMAGNETIC ATLAS • Short primers on compass reading, Earth field intensity, and common interference sources • Preferences for screen awake, haptics, vector bars, and quiet-spot threshold Privacy: sensor and location data stay local for compass and field display. Location can be turned off in Settings; true-north mode needs it. Polarispec is for outdoor interest and learning demos—not aviation, marine navigation, medical, or industrial compliance.