TimeTree vs DeepTime for Geology
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
TimeTree
Explore a vast public knowledge base of evolutionary timescales and divergence times among organisms. This app uses a hierarchical system to find and present molecular time estimates from scientific literature, allowing users to compare species and view summary statistics.
- Explore evolutionary timescales
- View organism divergence times
- Access scientific literature data
- Hierarchical tree-based system
- Compute summary statistics
- Compare species divergence
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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.
DeepTime for Geology
Explore an interactive geological time scale with detailed information on each unit, including GSSP definitions and color codes. Search for terms and view GSSPs on a global map. Ideal for geologists, students, and Earth history enthusiasts.
- Interactive geological time scale
- Detailed GSSP definitions
- CMYK and RGB color codes
- Searchable by name or age
- Global GSSP map integration
- Tips for using time terms
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DeepTime puts geological time at your fingertips. DeepTime is a full interactive version of the latest geological time scale: tap on any time unit to see more detail about it, including how its GSSP (golden spike) is defined. It even has the CMYK and RGB color codes for every time unit, great for when you need to have the right color for a map or chart. Even more, it is completely searchable by name or age. Come across an unfamiliar time term in an older paper? Search for it, and you'll see how it relates to the modern time scale. What's more is that all the GSSPs (the golden spikes) are shown on a gorgeous geological map of the world (courtesy of macrostrat.org), which shows their context in stunning detail. Tips for using time terms are also included with simple examples. Whether you are a geologist, a student, a science writer, or just a fan of Earth history, DeepTime will become your go-to resource for understanding geological time.
Screenshots
Verdict
The clearest difference is rating: DeepTime for Geology at 5.0 against TimeTree's 3.5. DeepTime for Geology also leads on review sentiment (80% vs 65%) and update cadence (every 3 months vs every 8 months). TimeTree's advantage is iOS requirement (8.0 vs 26.0). On price, ratings volume, ads and in-app purchases there is nothing between them.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
Both are free to download. Neither carries in-app purchases, so what you see is what you pay.
DeepTime for Geology holds the better App Store score, 5.0 against 3.5. Both are backed by a comparable volume of ratings — 12 and 8 respectively. Written reviews point the same way: 65% of TimeTree's written reviews are positive against 80% of DeepTime for Geology's.
TimeTree ships an update every 8 months, DeepTime for Geology every 3 months. The most recent releases landed on November 1, 2026 and November 3, 2026 respectively.
| Parameter | TimeTree | DeepTime for Geology |
|---|---|---|
| Price | Free | Free |
| Rating | 3.5 (12 ratings) | 5.0 (8 ratings) — better |
| Positive reviews | 65.1% of reviews | 80.0% of reviews — better |
| Number of ratings | 12 — better | 8 |
| Update frequency | Every 8 months | Every 3 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPod | iPhone, iPad |
| Requires iOS | 8.0 — better | 26.0 |
| Further details — not scored | ||
| Size | 66 MB | 1 MB |
| Age rating | 4+ | 4+ |
| Developer | Arizona and Penn State Universities | Hunt Mountain Software |
Customer experience
TimeTree
DeepTime for Geology
In-app purchases
TimeTree
No in-app purchases
DeepTime for Geology
No in-app purchases
Questions
Is TimeTree free?
Is DeepTime for Geology free?
Which has better reviews, TimeTree or DeepTime for Geology?
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Which is updated more often, TimeTree or DeepTime for Geology?
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