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

e: Spacetime Converter screenshots

Ranked alternatives

Showing 661–680 of 1,000 ranked alternatives.

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    Units Calculator

    Rakesh Bhadani

    Convert and access tools with a tap

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    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
  1. In-Charged app icon

    In-Charged

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    ★ 0.00 ratingsUtilitiesFreeData updated 2026-09-06
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    Central Billing System

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    Track fees, manage payments, streamline

    Track financial transactions related to school fees. Manage student payments and . Facilitate fee collection and transaction flow in Federal Unity Colleges.

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  3. Paper Roll Length app icon

    Paper Roll Length

    Manfred Breede

    Calculate by type

    Calculate in feet based on weight, width, and basis weight. Select from 8 categories to determine linear feet. Results are approximate and may vary based on winding tension, basis weight uniformity, and moisture content.

    ★ 0.00 ratingsBusiness$0.99Data updated 2026-09-08
  4. Inch Centimeter app icon

    Inch Centimeter

    LionsApp di Nallbati Elton

    Convert units with instant results

    Convert units between inches and centimeters instantly. Enter numbers to get immediate conversions. Save calculations for future reference. Share results directly. Perform quick and accurate measurements without additional steps.

    ★ 1.01 ratingsUtilities$0.99Data updated 2026-09-08

How we rank alternatives

Apps are ranked by functional similarity, category fit, rating confidence, and popularity.