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 681–700 of 1,000 ranked alternatives.

  1. PhySyCalc - Units Calculator app icon

    PhySyCalc - Units Calculator

    PhySy Ltd

    Calculate with physical units easily.

    The app supports unit symbols in calculations, providing answers in desired units. It includes physical constants and properties for elements, saving time on conversions and calculations.

    ★ 0.00 ratingsUtilities$4.99Data updated 2026-10-14
  1. iMeasure!Lite -Converter app icon

    iMeasure!Lite -Converter

    michele barbieri

    Instant offline unit conversions made easy.

    The app offers instant offline unit conversions across five categories: Angle, Energy, Length, Pressure, and Temperature. It includes a calculator and allows users to export conversion data via email or clipboard.

    ★ 4.52 ratingsUtilitiesFreeData updated 2026-10-28
  2. Construction Calculator+++ app icon

    Construction Calculator+++

    Behzad Dogahe

    Construction math calculations made simple.

    The app performs construction math calculations including length, width, and height for area, volume, and wall area. It calculates the number of bricks, blocks, pavers, tiles, and drywall sheets needed for projects.

    ★ 5.03 ratingsUtilities$2.99Data updated 2026-11-03
  3. NilnocCalc app icon

    NilnocCalc

    John Conlin

    Calculator with multiple display options.

    The app offers a 64-bit calculator with 10 registers for saving values and multiple display options including Hex, Oct, and Bin. It includes trigonometric functions, unit conversions, and combinations/permutations calculations.

    ★ 5.01 ratingsProductivityFreeData updated 2026-10-05
  4. TubeVolume app icon

    TubeVolume

    Andreas Hitzig

    Calculate tube dimensions and volume easily.

    The app calculates tube packaging dimensions. Users input two parameters (length, diameter, or volume) to find the third.

    ★ 0.00 ratingsBusinessFreeData updated 2026-10-15
  5. Physics For You app icon

    Physics For You

    Magzter Inc.

    Essential material for exam success.

    The app provides essential material for NEET and engineering exam success. It includes texts, sample papers, previous years’ papers, flowcharts, and memory tips.

    ★ 0.00 ratingsMagazines & NewspapersFreeData updated 2026-10-07
  6. AeroXWind app icon

    AeroXWind

    Mike Schnabel

    Crosswind calculator for iPad iPhone.

    The app calculates crosswind, headwind, and tailwind based on runway and wind selection. It provides Canadian Runway Friction Index (CRFI) for safe landings and includes a runway length utility.

    ★ 0.00 ratingsProductivity$2.99Data updated 2026-10-01
  7. Soccer Strategy Board Free edition app icon

    Soccer Strategy Board Free edition

    MOSPRO, INC.

    Soccer strategy board for iPad

    The app is a soccer operation board application for iPad. It can be used for stadium, watching television, and strategy conferences to improve team unity and discuss strategy.

    ★ 5.01 ratingsSportsFreeData updated 2026-09-22
  8. 测量工具Pro-专业测量尺子 app icon

    测量工具Pro-专业测量尺子

    飞剑 姚

    Measure length, track noise levels

    Measure lengths with a ruler supporting metric and inch units. Detect ambient noise levels using a decibel meter. Use a protractor tool to measure angles via camera. Calibrate and view objects for precise measurements.

    ★ 5.02 ratingsProductivity$0.99Data updated 2026-09-12
  9. Central Billing System app icon

    Central Billing System

    KRYSTAL DIGITAL NETWORKS SOLUTIONS LIMITED

    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.

    ★ 0.00 ratingsEducationFreeData updated 2026-09-06

How we rank alternatives

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