# Rulo — The best math puzzle

> Math puzzle game to improve thinking skills by analyzing number relationships. (iPhone/iPad app by TA MINH QUANG.)

- Source: https://appshunter.io/ios/app/rulo/id1435291458 (this page in markdown: same URL + `.md`)
- Developer: [TA MINH QUANG](https://appshunter.io/developer/965095099)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 4.90/5 from 7 App Store ratings
- Age rating: 4+
- Requires: iOS 11.0 · 67 MB
- Languages: American English
- Released: 2020-05-16
- Data updated: 2026-08-15
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/rulo/id1435291458/reviews.md

## What is Rulo?

Rulo is a simple math puzzle game that helps you improve your thinking skills.

You will significantly improve your thinking ability based on analyzing the relationship between objects.

Upgrade yourself to the Master to see the change.

How to play:

You will see circles with random numbers appear in 4x4 or 5x5 grids.

The number in the square is the Sum of the corresponding row or column.

Based on the sum and the numbers in the row or column, hide the inappropriate numbers. To that end, the sum of the circles is retained by the number in the square of that row or column.

Notice the relationship between the sum and the numbers in the row and column.

Have fun!

## Key features

- Number grid puzzles
- Analyze number relationships
- Improve thinking ability
- Master level challenges
- Row and column sum matching

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 5 Hints | $1.99 | one-time |



## Frequently asked questions about Rulo

### What is Rulo?

Rulo is a free math puzzle game available on iPhone and iPad. It helps users improve their thinking skills by analyzing the relationships between numbers in a grid.

### How do you play Rulo?

In Rulo, you'll see grids with numbers. The number in a square represents the sum of its row or column. Your goal is to hide inappropriate numbers so the sum is retained.

### What are the benefits of playing Rulo?

Playing Rulo can significantly improve your thinking ability by training you to analyze the relationships between numbers and sums within the puzzle grids.

### Is Rulo suitable for all ages?

Rulo has an age rating of 4+, making it suitable for a wide range of players looking for a mental challenge.

### Does Rulo have ads?

No, Rulo does not contain advertisements, providing an uninterrupted puzzle-solving experience.

### Can I play Rulo offline?

The provided data does not specify if Rulo can be played offline. However, as a puzzle game, it is likely designed for single-player use.

### What devices does Rulo support?

Rulo is supported on iPhone, iPad, and iPod devices, offering a versatile gaming experience across Apple platforms.

### When was Rulo last updated?

Rulo was last updated on May 16, 2020, with version 1.0 being the latest release.

## Version history (last 1 release)

### 1.0 — 2020-05-16

No release notes.

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## More apps by TA MINH QUANG

- [Power Line: Antistress & Relax](https://appshunter.io/ios/app/power-line-antistress-and-relax/id965095100)
- [Dot Connect: Antistress, Relax](https://appshunter.io/ios/app/dot-connect-antistress-relax/id1180614460)
- [Sudoku: Clean & Minimal](https://appshunter.io/ios/app/sudoku-clean-and-minimal/id1446515056)
- [AdBlocker - best ad blocker](https://appshunter.io/ios/app/adblocker-best-ad-blocker/id1538095967)
- [Good Theme](https://appshunter.io/ios/app/good-theme/id1538134373)

All apps by TA MINH QUANG: https://appshunter.io/developer/965095099

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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 2026-08-15.*