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An accurate light pollution map with more than 100 other astronomy tools.
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Nautical almanac – tools for mariners
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Get pinpoint forecasts, radar, alerts & tide charts from NOAA.
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Use your phone's camera, gyro, and a Celestron telescope to see the universe!
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Free 3D modeling software for building molecules.
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Wide choice of parameters from the Euro ECMWF model, known for its accuracy
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The most complete aurora forecasting and solar activity app available!
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Advanced Astronomy Forecasting for North American Astronomers
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The handy offline world map for your pocket
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Marks and beacons
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Let’s celebrate the 50th anniversary of the historic moon landing
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Periodic Table of the Chemical Elements Complete.
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Interactive demonstration of geometric (ray) optics.
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Use compass, get magnetic variation, record mag data and be a citizen scientist!
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The solar system in your pocket
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Universal astronomy ephemeris App for calculating high precision ephemeris
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Topographic Maps of Mallorca. Scale 1:25.000. GPS Navigation.
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The App lists and sends notifications for the important astronomical events
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Nautical Flags Helper is an app for memorize ICS flags used by ships and yachts.
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Dive deeper into news, updates, and discoveries about space, NASA, and astronomy