# GLOBE Observer vs Emma

The clearest difference is rating: Emma at 5.0 against GLOBE Observer's 3.1. Emma also leads on update cadence (monthly vs every 2 months) and iOS requirement (11.0 vs 13.0). GLOBE Observer's advantage is ratings volume (86 vs 1). On price, ads, in-app purchases and monetization model there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Emma holds the better App Store score, 5.0 against 3.1. That said, the two scores are not equally well evidenced: GLOBE Observer has 86 ratings behind it against 1, so its average is the more settled of the two.

GLOBE Observer ships an update every 2 months, Emma monthly. The most recent releases landed on October 15, 2026 and October 2, 2026 respectively.

## The numbers

| Metric | GLOBE Observer | Emma |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.1 (86 ratings)](https://appshunter.io/ios/app/globe-observer/id1090456751/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/emma-wcu/id1468927796/reviews)** |
| Number of ratings | **86** | 1 |
| Positive reviews | 33.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Monetization | Free | Free |
| Size | 5 MB | 64 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [WCU Student Government](https://appshunter.io/developer/716813207) |

## What reviewers say

### GLOBE Observer

[App page](https://appshunter.io/ios/app/globe-observer/id1090456751)

Contribute to real scientific research by making environmental observations. Document clouds, mosquito habitats, land cover, and trees using your mobile device. Your data supports scientists worldwide, including NASA and NOAA.

**Highlights:** Make environmental observations, Document clouds, Map mosquito habitats, Record land cover, Measure tree height, Contribute to scientific research

**Features:** Vision Pro support

**In-app purchases:** none

**What reviewers like**

- 👍 Great for citizen science
- 💡 Educational and informative
- 👍 Easy to use (for some)
- 👍 Meaningful environmental measurements
- 👍 Fun and engaging

**What reviewers complain about**

- 🐛 App crashes frequently
- 🐛 Login/update issues
- 🐛 Account creation problems
- 🐛 Observations not submitting
- 🐛 Poor UI/UX design

**Reported bugs**

- Checking for updates loop
- 504 error on account creation
- Fails after step 5 in account creation
- Robot verification loop
- App crashes on opening

**Requested features**

- Improve UI/UX design
- Add dark mode
- Better translation
- Notifications for satellite flyovers
- Integrate with WorldView or Google Earth


### Emma

[App page](https://appshunter.io/ios/app/emma-wcu/id1468927796)

This free enrollment advisor provides quick access to information about degree programs, including courses, earning potential, and funding. It guides users through the application process and offers support during their first week of classes.

**Highlights:** Degree program information, Earning potential insights, Funding options, Enrollment requirements, Application completion, Application status feedback, First week of class guidance

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is GLOBE Observer free?

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

### Is Emma free?

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

### Which has better reviews, GLOBE Observer or Emma?

Emma is rated higher. GLOBE Observer averages 3.1 out of 5 from 86 ratings, while Emma averages 5.0 from 1 ratings.

### Do GLOBE Observer or Emma have ads?

Neither GLOBE Observer nor Emma shows ads.

### Which is updated more often, GLOBE Observer or Emma?

GLOBE Observer ships an update every 2 months, and Emma monthly. Most recently, GLOBE Observer was updated on October 15, 2026 and Emma on October 2, 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.*