Calculate electrical resistance and voltage drop for wires and cables. Input wire length, gauge, and material to get instant results. Includes a comprehensive wire gauge lookup table.

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Calculate electrical resistance and voltage drop for wires and cables. Input wire length, gauge, and material to get instant results. Includes a comprehensive wire gauge lookup table.






Calculate sunrise and sunset times for any location worldwide, for any day of the year. Plan outdoor activities, holidays, or photo sessions with ease. Search for cities globally or choose from a saved list.



This app calculates sunrise and sunset times, along with various twilight periods, for any location worldwide. It visualizes the sun's elevation and the Earth's illumination, and offers notifications for solar events. An augmented reality feature shows the sun's position and path in the sky.


Explore the cosmos with a 3D celestial globe, planetarium, and detailed maps of the Moon and Mars. Discover constellations with unique sound and visual effects, and track astronomical events like equinoxes and solstices.