# Number Builder - Puzzle Solver — Solve Dice Math Problems

> Calculates math solutions for dice-based number games. (iPhone/iPad app by Widgetilities LLC.)

- Source: https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164 (this page in markdown: same URL + `.md`)
- Developer: [Widgetilities LLC](https://appshunter.io/developer/1373578566)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Rating: 4.90/5 from 7 App Store ratings · 3 written reviews indexed
- Age rating: 4+
- Requires: iOS 17.0 · 4 MB
- Languages: American English
- Released: 2020-02-19
- Data updated: 2026-08-12
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164/reviews.md

## What is Number Builder?

Number Builder turns dice rolls into a hands-on way to practice mental math.

SOLVE MODE
Roll three dice, enter a target number, and see every way to combine your dice — using addition, subtraction, multiplication, division, exponents, and roots — to reach it. Great for checking your own work or discovering paths you hadn't thought of.

CHALLENGE MODE
Roll a set of dice and a target, then build the answer yourself — tapping dice and operators into place, left to right, with instant feedback when you're right. Six levels of difficulty take you from simple addition all the way up to exponents, fractional exponents, and roots, with targets up to 1,000.

Challenge mode includes 3 free puzzles to try. After that, it unlocks with a single one-time purchase — no subscriptions, and Family Sharing means one purchase covers your whole family.

BUILT FOR PRACTICE
Six progressively harder levels, each changing exactly one thing about the challenge
Customizable dice colors and styles
Full support for larger text sizes and VoiceOver
Solve mode stays completely free, no purchase required

No data is collected. No ads, ever.

## Key features

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

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

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


## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/number-builder-puzzle-solver/id1489526164/reviews.md

### 5/5 — Helpful Resource

*2025-09-03*

This app is easy to use and very helpful when teaching the N2K game.

### 5/5 — Perfect!

*2020-10-01*

Perfect for the National Number Knockout/board slam enthusiast! Thanks so much for creating it!

### 5/5 — CC mom

*2020-03-06*

App is very easy to use. I love it! Perfect for number knockout game. Thank you!

## Frequently asked questions about Number Builder

### What math operations does Number Builder support?

Number Builder supports basic arithmetic operations including addition (+), subtraction (-), multiplication (x), and division (÷). It also includes support for powers and roots for more advanced calculations.

### Is Number Builder a game itself?

No, Number Builder is a tool to help find solutions for math puzzles, particularly those used in games like Number Knockout. It does not contain the game itself.

### Who would find Number Builder most useful?

This app is super handy for teachers and parents to help kids who are stuck trying to find a particular solution in dice-based math games. Students can also use it to check their work or find new ways to solve problems.

### What information do I need to input into Number Builder?

You need to enter the numbers from your dice roll and the specific number you are trying to reach with an equation. The app will then calculate all possible solutions.

### Does Number Builder have ads?

No, Number Builder does not contain advertisements. It is a completely ad-free experience for users.

### What devices is Number Builder available on?

Number Builder is available for iPhone, iPad, and iPod devices, making it accessible to a wide range of Apple users.

### How often is Number Builder updated?

Number Builder was last updated on February 21, 2020, with version 1.0.4. While updates have not been frequent recently, the app is stable and functional.

### What is the age rating for Number Builder?

Number Builder has an age rating of 4+, making it suitable for young children and up. This indicates it contains no mature content.

## Version history (last 3 releases)

### 2.0 — 2026-07-27

Number Builder 2.0 is a ground-up rewrite with a brand new mode:

NEW: Challenge mode — roll dice and a target, then build your own answer across six levels of difficulty, from simple sums to exponents and roots
NEW: Customize your dice — pick a color theme and rendering style that fits you
Improved support for larger text sizes and VoiceOver throughout
A cleaner, redesigned look across every screen

Thanks for practicing with us — we'd love to hear what you think!

### 1.0.4 — 2020-02-21

Minor bug fixes

### 1.0.3 — 2020-02-19

No release notes.

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## More apps by Widgetilities LLC

- [ReadingTime - Family Tracker](https://appshunter.io/ios/app/readingtime-family-tracker/id1448609572)
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- [Airmanship Help Button](https://appshunter.io/ios/app/airmanship-help-button/id1477927361)

All apps by Widgetilities LLC: https://appshunter.io/developer/1373578566

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*Data collected daily from the US App Store and indexed by [AppsHunter](https://appshunter.io/). User reviews are verbatim App Store reviews. Ratings, prices and chart positions refresh continuously; this snapshot is from 2026-08-12.*