e: Spacetime Converter app icon

Apps Like e: Spacetime Converter for iPhone and iPad

Convert length and time relativistically.

The app converts between length and time using geometrized units where the speed of light is unity. It allows users to think about the world differently by converting units like inches to seconds or miles to years.

by Elliptics, Ltd.★ 5.01 ratingsEducationFreeData updated 2026-09-10
App detailsView in App Store

e: Spacetime Converter screenshots

Ranked alternatives

Showing 801–820 of 1,000 ranked alternatives.

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    Calculate, edit, and share results

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    ★ 5.01 ratingsUtilitiesFreeData updated 2026-09-06
    App details
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    Chain & Sprocket Calculator

    Vladislav Zhirnov

    Calculate and ratios

    Calculate gear ratios and speeds by entering teeth. Determine length and tension. Select sizes and types. Export calculations as PDF or image. Compare setups for efficiency.

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    App details

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