# Equation Builder

> Equation Builder (iPhone/iPad app by HIROMICHI YAMAMOTO.)

- Source: https://appshunter.io/ios/app/equation-builder/id6760441005 (this page in markdown: same URL + `.md`)
- Developer: [HIROMICHI YAMAMOTO](https://appshunter.io/developer/1884472636)
- Category: Games, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 3 MB
- Languages: American English
- Released: 2026-04-21
- Data updated: 2026-07-08
- User reviews in markdown: https://appshunter.io/ios/app/equation-builder/id6760441005/reviews.md

## What is Equation Builder?

Equation Builder is a brain-training math puzzle game where you build equations to reach target numbers. Connect numbers and operators on a grid to form valid equations and clear each stage.

FEATURES:
- 14 Chapters with 210+ Stages of progressive difficulty
- Start with simple addition and advance through subtraction, multiplication, and division
- Grid sizes grow from 3x3 to 5x5 as you progress
- Earn stars to unlock new chapters and themed environments
- 5 Beautiful Themes: Ocean, Midnight, Forest, Sunset, and Neon
- Hints available when you get stuck
- Clean, intuitive swipe-based controls

CHAPTERS:
First Steps - Learn the basics with addition
Subtraction - Add subtraction to the mix
Bigger Board - Expand to a 4x4 grid with 2 numbers
Three Numbers - Tackle 3-number equations on a 4x4 grid
Multiply - Introduce multiplication
Big Numbers - Take on larger values
Wide Open - Master the 5x5 grid with 3 numbers
Products - Multiply on the big board
Divide & Conquer - Division meets the 5x5 grid
Tight Fit - Squeeze 4 numbers onto a 4x4 grid
Full Equation - Build complete 4-number equations
Open Field - 4-number equations on the 5x5 grid
Expert - Complete your operator toolkit
Challenge - Put your skills to the test

Whether you are a math enthusiast or just looking for a fun way to sharpen your mind, Equation Builder offers the perfect balance of challenge and satisfaction. How far can you go?

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Remove Ads | $2.99 | one-time |
| 10 Hints Pack | $0.99 | one-time |



## Version history (last 1 release)

### 1.0 — 2026-04-21

No release notes.

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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 2026-07-08.*