# Addition simulator vs Number Decomposition

The clearest difference is price: Addition simulator at Free against Number Decomposition's $3.99. Addition simulator also leads on update cadence (every 6 days vs every 5 months) and iOS requirement (12.1 vs 17.0). On ads, in-app purchases and device support there is nothing between them.

Addition simulator is free to download; Number Decomposition costs $3.99 up front. Neither carries in-app purchases, so what you see is what you pay.

Addition simulator ships an update every 6 days, Number Decomposition every 5 months. The most recent releases landed on October 27, 2026 and November 5, 2026 respectively.

## The numbers

| Metric | Addition simulator | Number Decomposition |
| --- | --- | --- |
| Price | **Free** | $3.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 6 days** | Every 5 months |
| Monetization | — | Paid |
| Size | 7 MB | 78 MB |
| Requires iOS | **12.1** | 17.0 |
| Devices | iPad | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [Anton Golovatuk](https://appshunter.io/developer/510289187) | [Lernwunder](https://appshunter.io/developer/1840747082) |

## What reviewers say

### Addition simulator

[App page](https://appshunter.io/ios/app/addition-simulator/id1590804374)

**Features:** macOS Compatibility

**In-app purchases:** none


### Number Decomposition

[App page](https://appshunter.io/ios/app/number-decomposition-math/id6752735119)

This educational app teaches children foundational math skills by focusing on number bonds up to 10, avoiding counting to build a strong understanding of arithmetic. It uses visual aids and a structured approach for quick, accurate recall of addition and subtraction facts.

**Highlights:** Number bonds up to 10, Drag and drop interface, Visual quantity images, Spaced repetition learning, Child-friendly avatars, Offline functionality

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Addition simulator free?

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

### Is Number Decomposition free?

Number Decomposition costs $3.99, with no in-app purchases.

### Do Addition simulator or Number Decomposition have ads?

Neither Addition simulator nor Number Decomposition shows ads.

### Which is updated more often, Addition simulator or Number Decomposition?

Addition simulator ships an update every 6 days, and Number Decomposition every 5 months. Most recently, Addition simulator was updated on October 27, 2026 and Number Decomposition on November 5, 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.*