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 701–720 of 1,000 ranked alternatives.

  1. Countdown Widget - Track days app icon

    Countdown Widget - Track days

    Alcaeus Development AB

    Time to events and cherish moments

    Time until upcoming events with countdowns for years, months, , hours, and seconds. View past milestones and set reminders for important dates. Customize countdowns with themes and share events with others.

    ★ 5.03 ratingsUtilitiesFreeData updated 2026-09-06
  2. Bridge Engineering Calculator app icon

    Bridge Engineering Calculator

    V PUGAZHENTHI

    Calculate parameters instantly

    Calculate , suspension cable, and civil parameters with 58 specialized tools. Input values and units to get automatic results. Switch between metric and imperial units.

    ★ 5.02 ratingsEducationFreeData updated 2026-09-16
  1. Emissions Plus app icon

    Emissions Plus

    Jeff Barnes Web Design, Inc.

    Convert emissions, liberation, and pressure.

    The app converts emissions, liberation, or pressure. It offers over 800 additional conversion types across various categories including area, energy, length, and temperature.

    ★ 0.00 ratingsBusinessFreeData updated 2026-11-03
  2. Geo Measure: Area & Distance app icon

    Geo Measure: Area & Distance

    ObjectGraph LLC

    Measure areas and distances on the map

    Measure distances and areas on maps by tapping points. Switch between metric and imperial units. View precise measurements for property, routes, or land.

    ★ 5.01 ratingsNavigation$4.99Data updated 2026-10-28
  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. Hydraulics and Waterworks lite app icon

    Hydraulics and Waterworks lite

    V PUGAZHENTHI

    Calculate and convert parameters

    Calculate hydraulic parameters such as capillary rise, viscosity, and hydrostatic pressure. Convert between metric and imperial units. Determine velocity head, specific energy head, and total energy. Assess head loss using the Bernoulli equation.

    ★ 5.01 ratingsEducationFreeData updated 2026-09-06
  5. Smart Age Calculator app icon

    Smart Age Calculator

    IBEE Software Solutions Pvt. Ltd.,

    Calculate age in months, weeks, days.

    The app calculates age in months, weeks, and days. It also calculates the time remaining until the next birthday.

    ★ 5.01 ratingsLifestyleFreeData updated 2026-10-05
  6. ВFV app icon

    ВFV

    Bibi Waziran

    Manage your device settings and tasks

    Hash coding in the field of artificial intelligence achieves more efficient storage and processing of data by converting variable-length inputs into fixed-length strings.

    ★ 4.73 ratingsUtilitiesFreeData updated 2026-09-06

How we rank alternatives

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