TimeTree 4+

Arizona and Penn State Universities

Designed for iPhone

    • 4.0 • 10 Ratings
    • Free

iPhone Screenshots


TimeTree 4 is a public knowledge-base for information on the evolutionary timescale of life. This application allows easy exploration of the thousands of divergence times among organisms in the scientific literature. A tree-based (hierarchical) system is used to identify all published molecular time estimates bearing on the divergence of two chosen organisms, such as species, compute summary statistics, and present the results. Names of two taxa to be compared are entered in the search window and the results are presented on a set of self-explanatory tabs.

TimeTree 4 contains data from 2,274 studies including 50,632 species. We will be adding more data in the future as it comes in from researchers.

TimeTree 4 requires iOS 8.0 or newer.

The TimeTree project is jointly directed by Blair Hedges (Center for Biodiversity, Temple University) and Sudhir Kumar (Institute for Genomics and Evolutionary Medicine, Temple University). This project has been supported, in part, by grants from the National Science Foundation, National Institutes of Health, NASA Astrobiology Institute, and Science Foundation of Arizona.

What’s New

Version 4.0

This app has been updated by Apple to display the Apple Watch app icon.

New universal app for iPad and iPhone.
New divergence times from over 2000 studies.
Numerous bug fixes and server updates.

Ratings and Reviews

4.0 out of 5
10 Ratings

10 Ratings

Sesira Hoatzin ,

Great educational tool

While the app is somewhat prone to crashing on occasion, it’s a great educational tool for showing how close or distant two organism’s common ancestor is. Despite not being a teacher or officially a biology major myself (yet), I’ve been able to use this app to teach friends about relations between organisms.

Mark the Wonderer ,

Great tool to have on smart phone

I appreciate this evidence-based app for helping me to understand the time of divergence of two taxa. For instance, I just found out today that anteaters and aardvarks likely split evolutionarily about 100 million years ago! Not everyone wonders about this, but for those who do, this app is a great reference.

Colin Rafferty ,

Needs update for iPhone X

It’s great, but would be nice if the layout worked for “new” phones.

App Privacy

The developer, Arizona and Penn State Universities, has not provided details about its privacy practices and handling of data to Apple.

No Details Provided

The developer will be required to provide privacy details when they submit their next app update.

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