# GLOBE Observer vs GrowApp

The clearest difference is update cadence: GLOBE Observer at every 2 months against GrowApp's every 28 months. GrowApp's advantage is iOS requirement (11.0 vs 13.0). On price, ads, in-app purchases and device support there is nothing between them.

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

GLOBE Observer ships an update every 2 months, GrowApp every 28 months. The most recent releases landed on September 23, 2026 and September 5, 2026 respectively.

## The numbers

| Metric | GLOBE Observer | GrowApp |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.1 (86 ratings)](https://appshunter.io/ios/app/globe-observer/id1090456751/reviews)** | — |
| Number of ratings | **86** | — |
| Positive reviews | 33.9% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 28 months |
| Monetization | Free | — |
| Size | 5 MB | 6 MB |
| Requires iOS | 13.0 | **11.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [NASA](https://appshunter.io/developer/355542146) | [Stichting voor Duurzame Ontwikkeling](https://appshunter.io/developer/1219961624) |

## 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


### GrowApp

[App page](https://appshunter.io/ios/app/growapp/id1219961625)

**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 GrowApp free?

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

### Do GLOBE Observer or GrowApp have ads?

Neither GLOBE Observer nor GrowApp shows ads.

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

GLOBE Observer ships an update every 2 months, and GrowApp every 28 months. Most recently, GLOBE Observer was updated on September 23, 2026 and GrowApp on September 5, 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.*