# Number Join - Connect Diagonal — Connect Numbers Diagonally

> Logic puzzle game to fill sequential numbers horizontally, vertically, or diagonally. (iPhone/iPad app by Stanley Lam.)

- Source: https://appshunter.io/ios/app/number-join-connect-diagonal/id611072465 (this page in markdown: same URL + `.md`)
- Developer: [Stanley Lam](https://appshunter.io/developer/453164363)
- Category: Games, Family, Puzzle
- Price: Free with in-app purchases
- Rating: 4.20/5 from 57 App Store ratings · 27 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 8 MB
- Languages: American English, Japanese
- Released: 2013-03-12
- Data updated: 2026-08-06
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/number-join-connect-diagonal/id611072465/reviews.md

## What is Number Join?

This game is a logic puzzle with simple rules. Your aim is to fill in the missing numbers, in sequential order, going horizontally, vertically, or diagonally.

**** Features ****

# Content
- 5 difficulty levels
- more than 500 levels

# Features
- "Check" function can highlight wrong numbers
- option to enable automatically highlight wrong numbers
- Auto-save the process of unfinished levels
- Record best completion time for each level

# Challenge
- Game Center Achievements
- Try to complete as many levels as possible

## Key features

- Fill missing numbers sequentially
- Horizontal, vertical, and diagonal connections
- 5 difficulty levels
- Over 500 levels
- Check function for wrong numbers
- Auto-save unfinished levels
- Record best completion times

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Upgrade to Full Version | $0.99 | one-time |


## Recent user reviews (10 of 27)

All indexed reviews: https://appshunter.io/ios/app/number-join-connect-diagonal/id611072465/reviews.md

### 1/5 — Blah

*2022-03-18, version 1.1.17*

Crashes and makes me sad and have to start all over.

### 1/5 — Keeps Crashing

*2022-01-14, version 1.1.17*

Download it and tried playing it five times. App always crashes mid-game. Too bad, I like hidato.

### 1/5 — Unstable

*2021-12-23, version 1.1.17*

Keeps dropping out and loosing every move.

### 4/5 — It’s pretty good.

*2021-07-12, version 1.1.16*

It’s clearly been on the App Store a while, but it’s held up. The only thing I can complain about is the theme — it’s a little garish, and I would like to be able to change the colors and/or font. Aside from that, it scratches my Hidato itch pretty well, so no issues here!

### 4/5 — Good app

*2020-12-16*

I would love it if you could make more levels for no fee

### 5/5 — Nice game

*2020-12-05, version 1.1.16*

Elegant in its simplicity and makes you think!

### 5/5 — Very Cool!

*2020-07-21, version 1.1.15*

The game is really good and I recommend more people to play it, however I am curious to what the original game is called as I’m trying to code and watch these simple games. Overall: 10/10!

### 5/5 — Very addictive game - I love it

*2017-08-24, version 1.1.9*

I started doing this puzzle in the Daily Mail and enjoyed it as something different, had a quick look in the App Store and got NDS this, it's really good and God willing, will offset Alzheimer's for a few years!

### 5/5 — Awesome

*2017-03-31, version 1.1.8*

Great app! Nice range of difficulty levels, easy to learn, great implementation of a fun logic puzzle.

### 4/5 — Great

*2014-05-18, version 1.0.8*

Found this app and I'm hooked. 
Very challenging and a great distraction.

## Frequently asked questions about Number Join

### What is Number Join - Connect Diagonal?

This is a logic puzzle game where players fill in missing numbers in sequential order. You can connect numbers horizontally, vertically, or diagonally to solve the puzzles.

### What are the key features of this game?

The game offers 5 difficulty levels and over 500 levels to play. It includes a 'Check' function to highlight incorrect numbers, an option for automatic highlighting, auto-saving of progress, and records your best completion time for each level.

### Is this game free to play?

Yes, the game is free to download and play. It does include advertisements and offers in-app purchases, which may provide additional benefits or remove ads.

### What kind of challenges does the game offer?

Beyond the core puzzle-solving, the game includes Game Center Achievements to strive for. It encourages players to complete as many levels as possible, offering a continuous challenge.

### Who is this game designed for?

This game is designed for players who enjoy logic puzzles and number-based challenges. It's suitable for those looking for a mentally stimulating casual gaming experience.

## Version history (last 5 releases)

### 1.1.19 — 2023-09-19

- Bug fixes and performance improvements

### 1.1.18 — 2022-10-28

- Bug fixes and performance improvements

### 1.1.17 — 2021-08-10

- Bug fixes and performance improvements

### 1.1.16 — 2020-11-22

- Bug fixes and performance improvements

### 1.1.15 — 2019-12-28

- Bug fixes and performance improvements
- Fix the text color in dark mode

## Apps similar to Number Join

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Kakuro: Number Crossword](https://appshunter.io/ios/app/kakuro-number-crossword/id1197071375) | 4.8 (1,874) | Free | Games |
| [100s Logic Games - Sudokus](https://appshunter.io/ios/app/100s-logic-games-sudokus/id1660755706) | 4.7 (21) | Free | Games |
| [SumSudoku: Killer Sudoku](https://appshunter.io/ios/app/sumsudoku-killer-sudoku/id1259275580) | 4.8 (798) | Free | Games |
| [Tic-Tac-Logic: X or O?](https://appshunter.io/ios/app/tic-tac-logic-x-or-o/id658817018) | 4.8 (520) | Free | Games |
| [Real Kakuro™](https://appshunter.io/ios/app/real-kakuro/id459669325) | 4.7 (2,617) | Free | Games |
| [Nurikabe: Islands & Walls](https://appshunter.io/ios/app/nurikabe-islands-and-walls/id581912445) | 4.9 (396) | Free | Games |

## More apps by Stanley Lam

- [Sudoku Revolution](https://appshunter.io/ios/app/sudoku-revolution/id546630587)
- [Islands in the Stream](https://appshunter.io/ios/app/islands-in-the-stream/id571234122)
- [Samurai Sudoku](https://appshunter.io/ios/app/samurai-sudoku/id594421598)
- [Number Join - Connect numbers](https://appshunter.io/ios/app/number-join-connect-numbers/id603551538)
- [Line Sweeper](https://appshunter.io/ios/app/line-sweeper/id614449716)

All apps by Stanley Lam: https://appshunter.io/developer/453164363

## Related topics

[diagonal](https://appshunter.io/ios/topics/diagonal) · [adjacell](https://appshunter.io/ios/topics/adjacell) · [the coil](https://appshunter.io/ios/topics/the-coil)

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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 2026-08-06.*