# Sci vs Sigma Science Education

The clearest difference is update cadence: Sci at every 6 weeks against Sigma Science Education's every 14 months. Sci also leads on iOS requirement (13.0 vs 15.1). On price, ads, in-app purchases and device support there is nothing between them.

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

Sci ships an update every 6 weeks, Sigma Science Education every 14 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

## The numbers

| Metric | Sci | Sigma Science Education |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 weeks** | Every 14 months |
| Size | 86 MB | 71 MB |
| Requires iOS | **13.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [山东远大朗威教育科技股份有限公司](https://appshunter.io/developer/1197726190) | [Sigma Science - Online](https://appshunter.io/developer/1704733809) |

## What reviewers say

### Sci

[App page](https://appshunter.io/ios/app/sci-lab-primary/id1387072836)

**In-app purchases:** none


### Sigma Science Education

[App page](https://appshunter.io/ios/app/sigma-science-education/id6463662794)

**In-app purchases:** none


## Frequently asked questions

### Is Sci free?

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

### Is Sigma Science Education free?

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

### Do Sci or Sigma Science Education have ads?

Neither Sci nor Sigma Science Education shows ads.

### Which is updated more often, Sci or Sigma Science Education?

Sci ships an update every 6 weeks, and Sigma Science Education every 14 months. Most recently, Sci was updated on October 13, 2026 and Sigma Science Education on October 11, 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.*