# Number Builder vs Multiplication Ring

The clearest difference is price: Number Builder at Free against Multiplication Ring's $1.99. Multiplication Ring's advantage is in-app purchases (none vs 1) and update cadence (every 10 months vs every 39 months). On ads and device support there is nothing between them.

Number Builder is free to download; Multiplication Ring costs $1.99 up front. Number Builder sells 1 one-off in-app purchase. Multiplication Ring asks for nothing beyond the download.

Number Builder ships an update every 39 months, Multiplication Ring every 10 months. The most recent releases landed on October 3, 2026 and September 26, 2026 respectively.

## The numbers

| Metric | Number Builder | Multiplication Ring |
| --- | --- | --- |
| Price | **Free** | $1.99 |
| Rating | **[4.9 (7 ratings)](https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164/reviews)** | — |
| Number of ratings | **7** | — |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 10 months** |
| Monetization | Free | — |
| Size | 4 MB | 69 MB |
| Requires iOS | 17.0 | **13.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [Widgetilities LLC](https://appshunter.io/developer/1373578566) | [Activities for Learning inc.](https://appshunter.io/developer/406078584) |

## What reviewers say

### Number Builder

[App page](https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164)

This app helps solve math puzzles by calculating all possible equations from dice rolls and a target number. It supports basic arithmetic, powers, and roots, making it a useful tool for games like Number Knockout.

**Highlights:** Calculates all possible solutions, Supports basic arithmetic, Includes powers and roots, Input dice rolls and target number, Useful for Number Knockout game

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

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock Challenge Mode | $1.99 | one-time |


### Multiplication Ring

[App page](https://appshunter.io/ios/app/multiplication-ring/id6590630320)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Number Builder free?

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

### Is Multiplication Ring free?

Multiplication Ring costs $1.99, with no in-app purchases.

### Do Number Builder or Multiplication Ring have ads?

Neither Number Builder nor Multiplication Ring shows ads.

### Which is updated more often, Number Builder or Multiplication Ring?

Number Builder ships an update every 39 months, and Multiplication Ring every 10 months. Most recently, Number Builder was updated on October 3, 2026 and Multiplication Ring on September 26, 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.*