HydrosphereLab tools
Celestial Tools
Explore the sky with an interactive skyplot, or experiment with celestial positioning using the phone camera and motion sensors.
Skyplot & Sky Explorer
Explore satellites, the Sun, Moon, planets and reference stars in the sky above your location. Use the interactive skyplot and augmented-reality view.
SextantPhone
Record directions to celestial bodies with a phone and progressively estimate position from three or more observations.
These are experimental educational tools. Their outputs should not be used as certified navigation solutions.