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GPX Explore on the Mac: the Mist Trail in Yosemite colored by grade past Vernal Fall, with its elevation profile climbing to 5,981 ft

GPX Explore

See any GPX in 3D, ride it turn by turn, record and draw tracks. Mac, iPhone, iPad. Free to view and record; 3D, riding and editing with Pro.

KML Explore on the Mac: Oriole Park at Camden Yards on the hybrid map, the playing field outlined with the infield cut out

KML Explore

Open KML and KMZ maps: layers, styles, descriptions and attributes, measured. Mac, iPhone, iPad. Free to view; editing and export with Pro.

Geo Measure on the Mac: LaGuardia Airport outlined on a satellite map with its area in acres

Geo Measure

Any area, any distance, along roads too, or walk the boundary. iPhone, iPad, Mac and Vision Pro. Free; layers, reports and walking with Pro.

Mount Rainier in 3D in Geo Elevation: the volcano as a block of real terrain in relief, colored by the rocks of the geologic map

Geo Elevation

Any place as real terrain in relief, with its rocks and a plate to print. On Vision Pro, on your table and at true size. Free, with Pro.

The Train of Four app icon beside the words: the TOF ratio, T4/T1, from the iPhone’s accelerometer, published in the Canadian Journal of Anesthesia, 2026

Train of Four

The TOF ratio, T4/T1, from the iPhone’s accelerometer. Published in the Canadian Journal of Anesthesia

Seismica on the Mac: a globe with recent earthquakes as magnitude markers, active fault lines in red and the event list beside it

Seismica

Replay great earthquakes. Search the USGS catalog. Keep a study with your notes. iPhone, iPad and Mac

All 26 apps →