# TimeTree vs Space Telescope App

The clearest difference is in-app purchases: TimeTree at none against Space Telescope App's 4. TimeTree also leads on ads (none vs shown) and review sentiment (65% vs 40%). Space Telescope App's advantage is update cadence (every 10 days vs every 8 months) and ratings volume (30 vs 10). On price, rating and device support there is nothing between them.

Both are free to download. Space Telescope App sells 4 in-app purchases, starting at $4.99 per month. TimeTree asks for nothing beyond the download.

On the App Store both sit at effectively the same score — 4.0 for TimeTree against 4.0 for Space Telescope App. Both are backed by a comparable volume of ratings — 10 and 30 respectively. Written reviews are what separate them: 65% of TimeTree's written reviews are positive against 40% of Space Telescope App's.

TimeTree ships an update every 8 months, Space Telescope App every 10 days. The most recent releases landed on October 16, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | TimeTree | Space Telescope App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (10 ratings)](https://appshunter.io/ios/app/timetree/id372842500/reviews) | [4.0 (30 ratings)](https://appshunter.io/ios/app/space-telescope-app/id1603876992/reviews) |
| Number of ratings | 10 | **30** |
| Positive reviews | **65.1% of reviews** | 40.0% of reviews |
| In-app purchases | **No** | Yes |
| Ads | **No** | Yes |
| Update frequency | Every 8 months | **Every 10 days** |
| Monetization | **Free** | Free with in-app purchases |
| Size | 66 MB | 104 MB |
| Requires iOS | **8.0** | 15.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Arizona and Penn State Universities](https://appshunter.io/developer/372842503) | [KAKHA GIORGASHVILI](https://appshunter.io/developer/1501353984) |

## 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


### Space Telescope App

[App page](https://appshunter.io/ios/app/space-telescope-app/id1603876992)

Explore the universe with real-time updates and stunning visuals from NASA's James Webb Space Telescope. Engage with expert insights, join community discussions, and test your knowledge with interactive quizzes. Discover distant galaxies and unlock the secrets of the early universe.

**Highlights:** Live mission updates, Breathtaking image gallery, Expert Q&A with astronomers, Community discussions, Interactive space quizzes, 3D solar system explorer, Exclusive wallpapers

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Ad-Free Plan | $4.99 | per month |
| Ad-Free Annual Access | $29.99 | per year |
| Premium | $2.99 | one-time |
| Buy 1M Points | $99.99 | one-time |


## Frequently asked questions

### Is TimeTree free?

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

### Is Space Telescope App free?

Space Telescope App is free to download, with in-app purchases available.

### Which has better reviews, TimeTree or Space Telescope App?

TimeTree and Space Telescope App are both rated 4.0 out of 5 on the App Store, from 10 and 30 ratings respectively.

### Do TimeTree or Space Telescope App have ads?

Space Telescope App shows ads; TimeTree does not.

### Which is updated more often, TimeTree or Space Telescope App?

TimeTree ships an update every 8 months, and Space Telescope App every 10 days. Most recently, TimeTree was updated on October 16, 2026 and Space Telescope App on October 7, 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.*