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.
e: Spacetime Converter screenshots
Ranked alternatives
Showing 581–600 of 1,000 ranked alternatives.


Kalc
YUTA OKAJIMA
Convert units, calculate, track time
Convert units between different systems with a simple interface. Perform basic and advanced calculations. View and switch between time zones with an intuitive world clock.



Drafting Utility :TriangleCalc
Masaharu Tsukamoto
Calculate triangle sides and angles
TriangleCalc calculates triangle side lengths and angles by entering two values. Automatically computes remaining sides and angles. Displays results in clear numerical format. Supports basic trigonometric calculations for triangles.

Engineering Survey Calculator
V PUGAZHENTHI
Calculate parameters and units
Calculate standard deviation, probable error, and error of the mean for surveying and civil measurements. Switch between imperial and metric units. Perform calculations for series of observations and single or combined accidental errors.





PATH Companion
VERMONT EDUCATION HEALTH INITIATIVE INC
Track exercise progress with Apple Health.
The app tracks exercise progress and syncs with Apple Health. Users can add records on their phone or the web, and they update automatically in both places.






How we rank alternatives
Apps are ranked by functional similarity, category fit, rating confidence, and popularity.