# Multiply vs CSO de Boog

The clearest difference is in-app purchases: CSO de Boog at none against Multiply's 4. CSO de Boog also leads on update cadence (every 5 days vs fortnightly) and iOS requirement (11.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Multiply sells 4 in-app purchases, starting at $3.99 per month. CSO de Boog asks for nothing beyond the download.

Multiply ships an update fortnightly, CSO de Boog every 5 days. The most recent releases landed on October 8, 2026 and September 30, 2026 respectively.

## The numbers

| Metric | Multiply | CSO de Boog |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/multiply-arithmetic-games/id1343403326/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Fortnightly | **Every 5 days** |
| Monetization | Freemium | — |
| Size | 26 MB | 11 MB |
| Requires iOS | 17.0 | **11.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Azat Goktas](https://appshunter.io/developer/1229499443) | [Stichting  christelijk speciaal onderwijs Apeldoorn](https://appshunter.io/developer/1533235284) |

## What reviewers say

### Multiply

[App page](https://appshunter.io/ios/app/multiply-arithmetic-games/id1343403326)

Master arithmetic and advanced math concepts with interactive quizzes and flashcards. Track your progress, earn rewards, and learn at your own pace with personalized modules. Accessible anytime, even offline.

**Highlights:** Customizable math quizzes, Interactive flashcards, Streaks and rewards system, Personalized learning paths, Progress tracking reports, Offline access

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

**In-app purchases (4)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Monthly Pro | $3.99 | per month |
| Monthly Pro | $3.99 | per month |
| Yearly Pro | $34.99 | per year |
| Yearly Pro | $34.99 | per year |


### CSO de Boog

[App page](https://appshunter.io/ios/app/cso-de-boog/id1533235282)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Multiply free?

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

### Is CSO de Boog free?

CSO de Boog is free to download, with no in-app purchases.

### Do Multiply or CSO de Boog have ads?

Neither Multiply nor CSO de Boog shows ads.

### Which is updated more often, Multiply or CSO de Boog?

Multiply ships an update fortnightly, and CSO de Boog every 5 days. Most recently, Multiply was updated on October 8, 2026 and CSO de Boog on September 30, 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.*