# COSI Science vs Invisible Ground

The clearest difference is rating: Invisible Ground at 5.0 against COSI Science's 4.0. COSI Science's advantage is update cadence (every 2 months vs every 8 months) and ratings volume (28 vs 4). 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.

Invisible Ground holds the better App Store score, 5.0 against 4.0. That said, the two scores are not equally well evidenced: COSI Science has 28 ratings behind it against 4, so its average is the more settled of the two.

COSI Science ships an update every 2 months, Invisible Ground every 8 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | COSI Science | Invisible Ground |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.0 (28 ratings)](https://appshunter.io/ios/app/cosi-science/id1251512700/reviews) | **[5.0 (4 ratings)](https://appshunter.io/ios/app/invisible-ground/id1611178239/reviews)** |
| Number of ratings | **28** | 4 |
| Positive reviews | 64.3% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 8 months |
| Monetization | Free | Free |
| Size | 21 MB | 543 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [COSI](https://appshunter.io/developer/1251512698) | [Brian Koscho](https://appshunter.io/developer/1611178241) |

## 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


### Invisible Ground

[App page](https://appshunter.io/ios/app/invisible-ground/id1611178239)

Experience local history through augmented reality and immersive audio storytelling. Explore historical sites with digital overlays and listen to place-based documentaries that bring the past to life in the exact locations where events occurred.

**Highlights:** Augmented reality historical site overlays, Place-based documentary audio stories, Multisensory historical engagement, Explore community history, Immersive storytelling experience

**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 Invisible Ground free?

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

### Which has better reviews, COSI Science or Invisible Ground?

Invisible Ground is rated higher. COSI Science averages 4.0 out of 5 from 28 ratings, while Invisible Ground averages 5.0 from 4 ratings.

### Do COSI Science or Invisible Ground have ads?

Neither COSI Science nor Invisible Ground shows ads.

### Which is updated more often, COSI Science or Invisible Ground?

COSI Science ships an update every 2 months, and Invisible Ground every 8 months. Most recently, COSI Science was updated on November 2, 2026 and Invisible Ground on November 3, 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.*