# LI Sciences 1 vs Challenge Multiplication

The clearest difference is iOS requirement: LI Sciences 1 at 11.0 against Challenge Multiplication's 15.0. On price, update cadence, ads and in-app purchases there is nothing between them.

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

Both ship on a similar rhythm, roughly every 9 months. The most recent releases landed on August 15, 2026 and September 18, 2026 respectively.

## The numbers

| Metric | LI Sciences 1 | Challenge Multiplication |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 9 months | Every 9 months |
| Size | 751 MB | 18 MB |
| Requires iOS | **11.0** | 15.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Éditions JOCATOP](https://appshunter.io/developer/1438112476) | [Cyril ANDRE](https://appshunter.io/developer/1652227485) |

## What reviewers say

### LI Sciences 1

[App page](https://appshunter.io/ios/app/li-sciences-1-cm/id6480125969)

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

**In-app purchases:** none


### Challenge Multiplication

[App page](https://appshunter.io/ios/app/challenge-multiplication/id6743617103)

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

**In-app purchases:** none


## Frequently asked questions

### Is LI Sciences 1 free?

LI Sciences 1 is free to download, with no in-app purchases.

### Is Challenge Multiplication free?

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

### Do LI Sciences 1 or Challenge Multiplication have ads?

Neither LI Sciences 1 nor Challenge Multiplication shows ads.

### Which is updated more often, LI Sciences 1 or Challenge Multiplication?

LI Sciences 1 ships an update every 9 months, and Challenge Multiplication every 9 months. Most recently, LI Sciences 1 was updated on August 15, 2026 and Challenge Multiplication on September 18, 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.*