# Twin Science vs Vitamin

The clearest difference is rating: Vitamin at 5.0 against Twin Science's 4.4. Vitamin also leads on iOS requirement (12.0 vs 15.0). Twin Science's advantage is ratings volume (77 vs 2) and update cadence (every 2 months vs every 3 months). On price, review sentiment, ads and in-app purchases there is nothing between them.

Both are free to download. Twin Science sells 10 in-app purchases, starting at $2.49 per month and Vitamin sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

Vitamin holds the better App Store score, 5.0 against 4.4. That said, the two scores are not equally well evidenced: Twin Science has 77 ratings behind it against 2, so its average is the more settled of the two. Written reviews split almost evenly too, at 57% and 57% positive.

Twin Science ships an update every 2 months, Vitamin every 3 months. Both last shipped on November 3, 2026.

## The numbers

| Metric | Twin Science | Vitamin |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.4 (77 ratings)](https://appshunter.io/ios/app/twin-science-stem-learning/id1479559635/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/vitamin/id1541479484/reviews)** |
| Number of ratings | **77** | 2 |
| Positive reviews | **57.1% of reviews** | 56.5% of reviews |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | **Every 2 months** | Every 3 months |
| Monetization | Free with in-app purchases | Free with in-app purchases |
| Size | 93 MB | 104 MB |
| Requires iOS | 15.0 | **12.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Twin](https://appshunter.io/developer/1447423866) | [SEBIT EGITIM VE BILGI TEKNOLOJILERI A S](https://appshunter.io/developer/435728265) |

## What reviewers say

### Twin Science

[App page](https://appshunter.io/ios/app/twin-science-stem-learning/id1479559635)

This app provides sustainability and environmental education for children aged 7-12 through gamified STEM+A content. It features interactive videos, hands-on projects, trivia, and AI-based skill reports for parents and educators.

**Highlights:** SDG-based sustainability content, Gamified learning experience, AI-based monthly skill reports, Interactive discovery videos, Hands-on DIY projects, STEM+A trivia games, Ad-free and moderated environment

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

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Premium Membership | $2.49 | per month |
| Premium Membership | $2.99 | per month |
| Premium Membership | $3.49 | per month |
| Monthly Premium Plan | $7.99 | per month |
| Premium Membership | $23.99 | per year |
| Premium Membership | $27.99 | per year |
| Premium Membership | $29.99 | per year |
| 6 Months Education Pack | $44.99 | per 6 months |
| Yearly Premium Plan | $79.99 | per year |
| 1 Year Education Pack | $79.99 | per year |


### Vitamin

[App page](https://appshunter.io/ios/app/vitamin/id1541479484)

This app provides access to comprehensive educational content for students, including interactive activities, 3D animations, and virtual experiments. It supports a full learning flow from concept acquisition to performance measurement, all accessible on a mobile device.

**Highlights:** Interactive activities, 3D animations, Virtual experiments, Study sheets, Video solutions, Performance assessment, VClub access

**Features:** Vision Pro support

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 6. Sınıf Fen Bilimleri | $49.99 | one-time |
| 6. Sınıf Matematik | $49.99 | one-time |
| 7. Sınıf Fen Bilimleri | $49.99 | one-time |
| 6. Sınıf Sosyal Bilgiler | $49.99 | one-time |
| 7. Sınıf Sosyal Bilgiler | $49.99 | one-time |
| 7. Sınıf Matematik | $49.99 | one-time |
| 8. Sınıf Türkçe | $49.99 | one-time |
| 8. Sınıf Fen Bilimleri | $49.99 | one-time |
| 8. Sınıf Matematik | $49.99 | one-time |
| 8. Sınıf İnkılap Tarihi | $49.99 | one-time |


## Frequently asked questions

### Is Twin Science free?

Twin Science is free to download, with in-app purchases available.

### Is Vitamin free?

Vitamin is free to download, with in-app purchases available.

### Which has better reviews, Twin Science or Vitamin?

Vitamin is rated higher. Twin Science averages 4.4 out of 5 from 77 ratings, while Vitamin averages 5.0 from 2 ratings.

### Do Twin Science or Vitamin have ads?

Neither Twin Science nor Vitamin shows ads.

### Which is updated more often, Twin Science or Vitamin?

Twin Science ships an update every 2 months, and Vitamin every 3 months. Most recently, Twin Science was updated on November 3, 2026 and Vitamin 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.*