Growth · alternatives · 2026

24 alternatives to Relativity of Time

What humans could do in 1s/min/h/week/month/year

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. Prices are shown for the 1 we have checked on their own sites, 1 of them free or with a free tier. Relativity of Time launched in 2017; newer entries below may have overtaken it.

1WI
What if the speed of light was 5 km/h?free▲629
Special relativity simulator in which light crawls along at a human speed, so Lorentz contraction, aberration and Doppler shift happen at walking pace.
Sep 2026 · rivendell.dmitrybrant.com · its alternatives →
2
Memory by Timely▲502
An intelligent timeline of everything you did in a day.
2017 · timely.com · its alternatives →
3
Spacetime▲240
Help your distributed team coordinate across time zones 🌎
2016 · its alternatives →
4
Left▲337
Visualizing time in interactive dots - one dot, one moment
2025 · apps.apple.com · its alternatives →
5
Time Travel▲85
Simple, beautiful and interactive world clock.
2019 · time-travel.app · its alternatives →
6
Time▲413
An AI-powered time-tracking app
2017 · its alternatives →
7
Orbit▲83
Fun, flexible, visual time tracking.
2018 · its alternatives →
8
Time Travel: A History▲63
A meditation on exploring time, travel, and technology
2016 · amazon.com · its alternatives →
9
Timelines▲104
Track your time on a fully interactive timeline
2016 · timelines.app · its alternatives →
10
Time Travel▲89
Convert timezones faster than ever!
2020 · timetravel.sharath.app · its alternatives →
11
TimePlay.io▲88
Paint your history in time
2024 · its alternatives →
12
Billionth Second Birthday▲102
Find the moment you'll have been alive for 1 billion seconds
2015 · billionbirthday.com · its alternatives →
13
Time Tag▲119
Simple time tracking: Tag, filter, and analyze your day,
2024 · its alternatives →
14
YourClock▲75
Reimagine time
2018 · apps.apple.com · its alternatives →
15
Timehop▲151
Your digital life history
2014 · timehop.com · its alternatives →
16
Timelog▲144
The most dead simple and responsive time-tracking platform
2015 · timelog-app.com · its alternatives →
17
Nomad Time▲104
A friendly time zone converter
2021 · nomadtime.app · its alternatives →
18
Whatime▲96
Timezone-friendly scheduling, made easy and intuitive
2023 · whati.me · its alternatives →
19
SunTimes▲85
See the time of sunrise and sunset all around the world.
2019 · play.google.com · its alternatives →
20
Timesible▲130
Hi, I'm a developer, and after years of experimenting with various ideas, I finally shipped and reached a satisfaction point with my product. It’s called Timesible — a time tracking and project management tool designed to help businesses and teams optimize their productivity. Over the years, I’ve built plenty of projects, but most of them never reached the finish line or died out pretty early. This time, however, I wanted to build something truly useful. I decided to create a product that offers a simple, all-in-one solution to track time, manage tasks, and keep everything on budget. The…
2025 · timesible.io · its alternatives →
21
What Is The Time▲77
Timezone, world clock, plan meeting, no mental calculations
2024 · apps.apple.com · its alternatives →
22
What is Relativity?▲57
A lively presentation of the theory of relativity.
2016 · amazon.com · its alternatives →
23
Time Flies▲91
Embrace the finite, make every week count
2023 · timeflies.dev · its alternatives →
24
TimeTurtle▲95
Clutter-free time tracking based on an interactive timeline
2019 · its alternatives →

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Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →