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 661–680 of 1,000 ranked alternatives.


Units Calculator
Rakesh Bhadani
Convert and access tools with a tap
Convert across categories like area, storage, mass, length, time, temperature, and volume. Switch between life-related such as angle, energy, and pressure. Access science-based conversions for acceleration, force, and radiation.








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.



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.






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.

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