# TERC EarthLabs vs Isotope Browser

TERC EarthLabs and Isotope Browser both sit at 5.0 stars, but that hides the real split: 83% of Isotope Browser's written reviews are positive against 40% of TERC EarthLabs's. Isotope Browser also leads on update cadence (every 6 weeks vs every 53 months) and ratings volume (27 vs 1). TERC EarthLabs's advantage is iOS requirement (8.0 vs 11.0). On price, rating, 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.

TERC EarthLabs holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: Isotope Browser has 27 ratings behind it against 1, so its average is the more settled of the two. Written reviews complicate that: 40% of TERC EarthLabs's written reviews are positive against 83% of Isotope Browser's, so the app with the better star average is not the one people write more warmly about.

TERC EarthLabs ships an update every 53 months, Isotope Browser every 6 weeks. The most recent releases landed on October 4, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | TERC EarthLabs | Isotope Browser |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/terc-earthlabs/id929008909/reviews)** | [4.8 (27 ratings)](https://appshunter.io/ios/app/isotope-browser/id943890538/reviews) |
| Number of ratings | 1 | **27** |
| Positive reviews | 40.0% of reviews | **82.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 53 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 40 MB | 8 MB |
| Requires iOS | **8.0** | 11.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [TERC, Inc.](https://appshunter.io/developer/663250154) | [IAEA](https://appshunter.io/developer/535500126) |

## What reviewers say

### TERC EarthLabs

[App page](https://appshunter.io/ios/app/terc-earthlabs/id929008909)

This app offers free high school Earth science curriculum units with interactive visualizations, videos, and hands-on labs. It allows users to run Flash-based videos and interactives on their iPad for engaging science education.

**Highlights:** Interactive visualizations, Video content, Hands-on labs, Flash-based interactives, Curriculum units

**Features:** macOS Compatibility

**In-app purchases:** none


### Isotope Browser

[App page](https://appshunter.io/ios/app/isotope-browser/id943890538)

Access comprehensive nuclear data for over 4,000 nuclides and isomers. Explore interactive charts, filter by various criteria, and view detailed information for each nuclide. Data is sourced from reliable resources and available offline.

**Highlights:** Properties of over 4,000 nuclides and isomers, Interactive Chart of Nuclides, Periodic Table of Elements, Filter by half-life, decay mode, radiation type, and energy, Detailed nuclide information with web links, Offline access to embedded database

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

**In-app purchases:** none


## Frequently asked questions

### Is TERC EarthLabs free?

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

### Is Isotope Browser free?

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

### Which has better reviews, TERC EarthLabs or Isotope Browser?

TERC EarthLabs is rated higher. TERC EarthLabs averages 5.0 out of 5 from 1 ratings, while Isotope Browser averages 4.8 from 27 ratings.

### Do TERC EarthLabs or Isotope Browser have ads?

Neither TERC EarthLabs nor Isotope Browser shows ads.

### Which is updated more often, TERC EarthLabs or Isotope Browser?

TERC EarthLabs ships an update every 53 months, and Isotope Browser every 6 weeks. Most recently, TERC EarthLabs was updated on October 4, 2026 and Isotope Browser on October 24, 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.*