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 801–820 of 1,000 ranked alternatives.

  1. Epic Shivaji Maharaj Story App app icon

    Epic Shivaji Maharaj Story App

    Su Mit

    Explore historical events and biographies

    Explore historical accounts of Chhatrapati life and battles. Read detailed narratives about his strategies and legacy. View images and maps related to key events.

    ★ 0.00 ratingsBookFreeData updated 2026-09-06
  1. WoodMaster app icon

    WoodMaster

    John Lullie

    Woodworking tools for every project.

    The app offers woodworking tools including calculators for board feet, shelves, and decking. It also features fraction calculators, length conversions, a proportional calculator, and reference charts for screws, nails, joints, and wood types.

    ★ 0.00 ratingsProductivity$7.99Data updated 2026-11-05
  2. QikCalc - Calculator app icon

    QikCalc - Calculator

    Nigel Green

    Calculate simple arithmetic quickly and easily.

    The app offers a general use calculator with a simple interface and large buttons. It supports large numbers, negative numbers, and decimal places, displaying only significant digits.

    ★ 0.00 ratingsUtilities$0.99Data updated 2026-10-03
  3. Plusly Calculator app icon

    Plusly Calculator

    Emmanuel Vizcarra

    Calculate, edit, and share results

    Perform calculations with advanced operators and scientific functions. Use trigonometric, logarithmic, and round functions. Calculate tips and discounts. Edit expressions on the fly with a magic cursor. Share results directly.

    ★ 5.01 ratingsUtilitiesFreeData updated 2026-09-06

How we rank alternatives

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