# COSI Science vs JGAP

The clearest difference is update cadence: JGAP at every 2 days against COSI Science's every 2 months. COSI Science's advantage is ratings volume (27 vs 6). 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.

On the App Store both sit at effectively the same score — 4.1 for COSI Science against 4.0 for JGAP. Both are backed by a comparable volume of ratings — 27 and 6 respectively.

COSI Science ships an update every 2 months, JGAP every 2 days. The most recent releases landed on September 26, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | COSI Science | JGAP |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.1 (27 ratings)](https://appshunter.io/ios/app/cosi-science/id1251512700/reviews)** | [4.0 (6 ratings)](https://appshunter.io/ios/app/jgap/id1494328186/reviews) |
| Number of ratings | **27** | 6 |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 days** |
| Monetization | Free | Free |
| Size | 21 MB | 84 MB |
| Requires iOS | 11.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [COSI](https://appshunter.io/developer/1251512698) | [SpocksClub](https://appshunter.io/developer/413642306) |

## What reviewers say

### COSI Science

[App page](https://appshunter.io/ios/app/cosi-science/id1251512700)

Explore science at home with engaging videos and hands-on activities. Participate in citizen science projects or take virtual tours. This app brings the Center of Science and Industry's educational content to your family.

**Highlights:** At-home science discovery, Engaging science videos, Hands-on science activities, Citizen science participation, Virtual museum tours, Science challenges

**Features:** macOS Compatibility

**In-app purchases:** none


### JGAP

[App page](https://appshunter.io/ios/app/jgap/id1494328186)

Explore the universe with this interactive guide to an astronomy park's outdoor plaza. Learn about celestial movements, star positions, and the solar system through engaging features designed for public interaction and education.

**Highlights:** Interactive plaza features, Learn about the Sun and Earth's movement, Understand star positions, Explore the solar system's scale, Public access to observatory and plaza

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is COSI Science free?

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

### Is JGAP free?

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

### Which has better reviews, COSI Science or JGAP?

COSI Science is rated higher. COSI Science averages 4.1 out of 5 from 27 ratings, while JGAP averages 4.0 from 6 ratings.

### Do COSI Science or JGAP have ads?

Neither COSI Science nor JGAP shows ads.

### Which is updated more often, COSI Science or JGAP?

COSI Science ships an update every 2 months, and JGAP every 2 days. Most recently, COSI Science was updated on September 26, 2026 and JGAP 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.*