# Number Builder vs Master Math Fun

The clearest difference is in-app purchases: Master Math Fun at none against Number Builder's 1. Master Math Fun also leads on update cadence (every 4 days vs every 39 months) and iOS requirement (13.0 vs 17.0). On price, ads and device support there is nothing between them.

Both are free to download. Number Builder sells 1 one-off in-app purchase. Master Math Fun asks for nothing beyond the download.

Number Builder ships an update every 39 months, Master Math Fun every 4 days. The most recent releases landed on November 3, 2026 and October 28, 2026 respectively.

## The numbers

| Metric | Number Builder | Master Math Fun |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.6 (10 ratings)](https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164/reviews)** | — |
| Number of ratings | **10** | — |
| Positive reviews | 80.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 39 months | **Every 4 days** |
| Monetization | Free | — |
| Size | 4 MB | 137 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) | [Grzegorz Kiernozek](https://appshunter.io/developer/1441207704) |

## 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 |


### Master Math Fun

[App page](https://appshunter.io/ios/app/master-math-fun/id6754071490)

**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 Master Math Fun free?

Master Math Fun is free to download, with no in-app purchases.

### Do Number Builder or Master Math Fun have ads?

Neither Number Builder nor Master Math Fun shows ads.

### Which is updated more often, Number Builder or Master Math Fun?

Number Builder ships an update every 39 months, and Master Math Fun every 4 days. Most recently, Number Builder was updated on November 3, 2026 and Master Math Fun on October 28, 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.*