# SciQuiz vs Twin Science

The clearest difference is in-app purchases: SciQuiz at none against Twin Science's 10. SciQuiz also leads on review sentiment (67% vs 57%). Twin Science's advantage is ads (none vs shown). On price, rating, ratings volume and update cadence there is nothing between them.

Both are free to download. Twin Science sells 10 in-app purchases, starting at $2.49 per month. SciQuiz asks for nothing beyond the download.

SciQuiz holds the better App Store score, 4.6 against 4.4. Both are backed by a comparable volume of ratings — 53 and 77 respectively. Written reviews point the same way: 67% of SciQuiz's written reviews are positive against 57% of Twin Science's.

SciQuiz ships an update every 3 months, Twin Science every 2 months. The most recent releases landed on November 6, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | SciQuiz | Twin Science |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (53 ratings)](https://appshunter.io/ios/app/sciquiz-science-quiz/id1440078272/reviews)** | [4.4 (77 ratings)](https://appshunter.io/ios/app/twin-science-stem-learning/id1479559635/reviews) |
| Number of ratings | 53 | **77** |
| Positive reviews | **66.7% of reviews** | 57.1% of reviews |
| In-app purchases | **No** | Yes |
| Ads | Yes | **No** |
| Update frequency | Every 3 months | **Every 2 months** |
| Monetization | **Ad-supported** | Free with in-app purchases |
| Size | 302 MB | 93 MB |
| Requires iOS | 15.0 | 15.0 |
| Devices | **iPhone, iPad, iPod, Mac** | iPhone, iPad, iPod |
| Age rating | 9+ | 4+ |
| Developer | [Jianfeng Wu](https://appshunter.io/developer/1435210283) | [Twin](https://appshunter.io/developer/1447423866) |

## What reviewers say

### SciQuiz

[App page](https://appshunter.io/ios/app/sciquiz-science-quiz/id1440078272)

Engage with over 45,000 science quizzes covering biology, chemistry, geography, and physics. Explore scientific concepts through interactive 3D models and discover the world of science with curated news summaries.

**Highlights:** Extensive quiz library (45,000+), Biology, Chemistry, Geography, Physics topics, Interactive 3D molecule models, Microcosm exploration, Science and health news summaries, Experiment-based learning

**Features:** Vision Pro support

**In-app purchases:** none


### 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 |


## Frequently asked questions

### Is SciQuiz free?

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

### Is Twin Science free?

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

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

SciQuiz is rated higher. SciQuiz averages 4.6 out of 5 from 53 ratings, while Twin Science averages 4.4 from 77 ratings.

### Do SciQuiz or Twin Science have ads?

SciQuiz shows ads; Twin Science does not.

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

SciQuiz ships an update every 3 months, and Twin Science every 2 months. Most recently, SciQuiz was updated on November 6, 2026 and Twin Science 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.*