# COSI Science vs CareDay

The clearest difference is update cadence: CareDay at every 3 weeks against COSI Science's every 2 months. CareDay also leads on rating (4.3 vs 4.1). COSI Science's advantage is iOS requirement (11.0 vs 16.0). On price, review sentiment, ratings volume and ads there is nothing between them.

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

CareDay holds the better App Store score, 4.3 against 4.1. Both are backed by a comparable volume of ratings — 27 and 54 respectively. Written reviews point the same way: 64% of COSI Science's written reviews are positive against 71% of CareDay's.

COSI Science ships an update every 2 months, CareDay every 3 weeks. The most recent releases landed on October 12, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | COSI Science | CareDay |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.1 (27 ratings)](https://appshunter.io/ios/app/cosi-science/id1251512700/reviews) | **[4.3 (54 ratings)](https://appshunter.io/ios/app/careday/id1566423506/reviews)** |
| Number of ratings | 27 | **54** |
| Positive reviews | 64.3% of reviews | **70.8% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 3 weeks** |
| Monetization | Free | Free |
| Size | 21 MB | 89 MB |
| Requires iOS | **11.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [COSI](https://appshunter.io/developer/1251512698) | [CareDay Solutions LLC](https://appshunter.io/developer/1743323035) |

## 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


### CareDay

[App page](https://appshunter.io/ios/app/careday/id1566423506)

This app connects parents and childcare providers for seamless daily communication. Parents receive real-time updates, photos, and messages about their child's day. Providers can efficiently track activities, share updates, and manage child profiles.

**Highlights:** Real-time child updates, Photo and video sharing, Instant messaging with teachers, Attendance and activity tracking, Child profile management, Multi-child support

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

**In-app purchases:** none


## Frequently asked questions

### Is COSI Science free?

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

### Is CareDay free?

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

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

CareDay is rated higher. COSI Science averages 4.1 out of 5 from 27 ratings, while CareDay averages 4.3 from 54 ratings.

### Do COSI Science or CareDay have ads?

Neither COSI Science nor CareDay shows ads.

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

COSI Science ships an update every 2 months, and CareDay every 3 weeks. Most recently, COSI Science was updated on October 12, 2026 and CareDay on October 14, 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.*