# TimeTree vs DeepTime for Geology

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.

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.

## The numbers

| Metric | TimeTree | DeepTime for Geology |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.5 (12 ratings)](https://appshunter.io/ios/app/timetree/id372842500/reviews) | **[5.0 (8 ratings)](https://appshunter.io/ios/app/deeptime-for-geology/id1500200416/reviews)** |
| Number of ratings | **12** | 8 |
| Positive reviews | 65.1% of reviews | **80.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 8 months | **Every 3 months** |
| Monetization | Free | Free |
| Size | 66 MB | 1 MB |
| Requires iOS | **8.0** | 26.0 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Arizona and Penn State Universities](https://appshunter.io/developer/372842503) | [Hunt Mountain Software](https://appshunter.io/developer/328710008) |

## What reviewers say

### TimeTree

[App page](https://appshunter.io/ios/app/timetree/id372842500)

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.

**Highlights:** Explore evolutionary timescales, View organism divergence times, Access scientific literature data, Hierarchical tree-based system, Compute summary statistics, Compare species divergence

**Features:** macOS Compatibility

**In-app purchases:** none


### DeepTime for Geology

[App page](https://appshunter.io/ios/app/deeptime-for-geology/id1500200416)

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.

**Highlights:** 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

**Features:** Vision Pro support

**In-app purchases:** none


## Frequently asked questions

### Is TimeTree free?

TimeTree is free to download, with no in-app purchases.

### Is DeepTime for Geology free?

DeepTime for Geology is free to download, with no in-app purchases.

### Which has better reviews, TimeTree or DeepTime for Geology?

DeepTime for Geology is rated higher. TimeTree averages 3.5 out of 5 from 12 ratings, while DeepTime for Geology averages 5.0 from 8 ratings.

### Do TimeTree or DeepTime for Geology have ads?

Neither TimeTree nor DeepTime for Geology shows ads.

### Which is updated more often, TimeTree or DeepTime for Geology?

TimeTree ships an update every 8 months, and DeepTime for Geology every 3 months. Most recently, TimeTree was updated on November 1, 2026 and DeepTime for Geology on November 3, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*