# Citizen Sky View vs CAMOSA e

The clearest difference is update cadence: Citizen Sky View at every 2 weeks against CAMOSA e's every 4 months. Citizen Sky View also leads on iOS requirement (10.3 vs 14.0). 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.

Citizen Sky View ships an update every 2 weeks, CAMOSA e every 4 months. The most recent releases landed on October 9, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Citizen Sky View | CAMOSA e |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/citizen-sky-view/id1302449465/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 weeks** | Every 4 months |
| Monetization | Free | — |
| Size | 26 MB | 134 MB |
| Requires iOS | **10.3** | 14.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [University of Colorado Boulder](https://appshunter.io/developer/972210292) | [UAT Univerasal Aviation Training Ltd](https://appshunter.io/developer/1309605623) |

## What reviewers say

### Citizen Sky View

[App page](https://appshunter.io/ios/app/citizen-sky-view/id1302449465)

Participate in a NASA-sponsored citizen science project to study cloud formation. Coordinate with the project team for events, then use your phone to capture images of the sky at assigned locations and times. Your contributions help researchers learn more about atmospheric science.

**Highlights:** Citizen science participation, Cloud formation research, Event coordination, Location-based image capture, Data contribution for research

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

**In-app purchases:** none


### CAMOSA e

[App page](https://appshunter.io/ios/app/camosa-e-learning/id6448781077)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Citizen Sky View free?

Citizen Sky View is free to download, with no in-app purchases.

### Is CAMOSA e free?

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

### Do Citizen Sky View or CAMOSA e have ads?

Neither Citizen Sky View nor CAMOSA e shows ads.

### Which is updated more often, Citizen Sky View or CAMOSA e?

Citizen Sky View ships an update every 2 weeks, and CAMOSA e every 4 months. Most recently, Citizen Sky View was updated on October 9, 2026 and CAMOSA e on October 10, 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.*