SatData: GPS Compass & Sunrise

A compass, altimeter and GPS toolkit that works with no signal. Coordinates incl. MGRS, sunrise and moon times, in plain words. Pay once, no ads.

A compass, altimeter and GPS toolkit that works with no signal. SatData shows every reading your iPhone can produce — position, altitude, heading, accuracy, sun and moon — explained in plain words, for hikers, campers, geocachers and anyone who wants the numbers behind the blue dot.

Pay once and it's yours forever. No subscriptions, no in-app purchases, no ads — every feature included.

Everything is calculated on the phone, so it works on a summit, at sea and in a basement, with no signal at all. Every value says how sure the phone is and whether it was measured, derived or inferred. Nothing is made up.

NOW — WHERE YOU STAND • Position in decimal degrees, degrees-minutes-seconds or degrees and decimal minutes • Altitude above sea level, speed, heading and air pressure, every unit system shown at once • A quality word from EXCELLENT to POOR on every reading, plus the age of the fix • A compass card with true and magnetic north and the difference between them, steady at any speed • The next sunrise or sunset with a countdown, and a map for context

NAV — FIND YOUR WAY BACK • Mark where you are, type or paste a coordinate in any format, or pick a point on the map • Follow a compass dial or one big arrow back to it, with distance, bearing and time to reach • Straight-line guidance for finding the car, the tent or the trailhead again • Up to twenty waypoints, kept on your phone

SKY — SUN AND MOON • Where the sun and moon are right now, and when they rise, peak and set • Golden hour, the three twilights, moon phase, age and distance • Upcoming phases, equinoxes and solstices • The Earth's magnetic field at your position from the World Magnetic Model

SURVEY — YOUR TIGHTEST COORDINATE • Set the phone down and let it average fixes for 30 seconds to two minutes • An honest statement of how tight the result is, and one tap to save it as a waypoint • Ideal for hiding a geocache or logging a spot you need to find again

DATA — FOR PEOPLE WHO WANT EVERYTHING • About two hundred fields: UTM, MGRS, geohash, Plus Codes, Maidenhead, Earth-centered coordinates • GPS week and time of week, leap seconds, sidereal time, every accuracy figure iOS reports • Barometer and magnetometer readings, and exports to GPX, CSV, JSON, NMEA and plain text • iOS gives apps no satellite count or signal strengths, so SatData shows none and says so

BUILT RIGHT • Pay once, own it for life — the price you see is everything • No subscriptions, no in-app purchases, no upsells • No ads, ever • Megabytes, not gigabytes — no ad libraries, no analytics SDKs, nothing that isn't the app itself • Nothing leaves your phone — no account, no tracking; the one online feature is Apple's map tiles, and the app says so when offline • Made for iPhone, including both screens of iPhone Duo: opened up, every tab becomes two pages, one either side of the fold • It also runs on iPad in an iPhone-sized window, without an iPad layout • Follows your Larger Text setting

Download SatData and know exactly where you stand.

BEFORE YOU RELY ON IT SatData is a reference tool, not a safety device or a certified navigation or surveying instrument. Any reading can be wrong, so verify anything that matters against an independent source and never rely on this app alone to find a route, a person or safety. Its guidance is a straight line, for recreational use only. It is provided as-is, without warranty, and the developer's liability is limited to the fullest extent the law allows. The full notice appears when the app first opens and under Settings › Disclaimer. Precise Location is required.