# Redoku — Regex Meets Sudoku!

> Sudoku puzzles integrated with regular expression syntax for learning and practice. (iPhone/iPad app by Goldin LLC.)

- Source: https://appshunter.io/ios/app/redoku/id1575803391 (this page in markdown: same URL + `.md`)
- Developer: [Goldin LLC](https://appshunter.io/developer/1631216558)
- Category: Games, Education, Puzzle, Word
- Price: Free
- Rating: 4.25/5 from 4 App Store ratings · 3 written reviews indexed
- Age rating: 17+
- Requires: iOS 11.0 · 61 MB
- Languages: English
- Released: 2021-07-10
- Data updated: 2026-07-24
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/redoku/id1575803391/reviews.md

## What is Redoku?

Meet Redoku, a simple sudoku game using regular expressions! Learn the syntax of regular expressions and improve your comprehension through fun and engaging randomly generated sudoku puzzles.

Created for a Developer Student Club Regex event by @GoldinGuy! Based on @padolsey's awesome website with the same name. Network connection is necessary in order to access the webview with the GitHub link.

## Key features

- Sudoku puzzles with regex syntax
- Learn regular expression syntax
- Improve regex comprehension
- Randomly generated puzzles
- Engaging gameplay

## Recent user reviews (3 of 3)

All indexed reviews: https://appshunter.io/ios/app/redoku/id1575803391/reviews.md

### 3/5 — fun but has a major issue

*2024-05-22*

there are viable solutions to several puzzle here that are marked incorrect

### 4/5 — Fun puzzles

*2022-10-17*

Could use some UI improvements. Really could use a setting to turn off highlighting wrong letters so it doesn’t give away answers. 

Also, sometimes puzzles aren’t well generated—the first puzzle I did, my last box to solve was an intersection of a wildcard and a character class matcher. Having to find the answer by trial and error isn’t fun.

### 5/5 — Awesome learning game!

*2021-07-10*

Really dope, great way to practice regex! Could use a dark mode.

## Frequently asked questions about Redoku

### What is Redoku?

Redoku is a game that merges Sudoku puzzles with regular expression syntax. It's designed to help users learn and improve their comprehension of regular expressions through fun, randomly generated challenges.

### Is Redoku free to play?

Yes, Redoku is available for free. The app does not have any associated costs for download or gameplay.

### Does Redoku have ads?

No, Redoku does not contain advertisements. Users can enjoy the game without any interruptions from ads.

### What devices does Redoku support?

Redoku is available on iPhone, iPad, and iPod touch devices. It is designed for iOS users.

### How often is Redoku updated?

The latest version of Redoku is 1.0, and it was last updated on July 10, 2021. Information on future update frequency is not available.

### What is the age rating for Redoku?

Redoku has an age rating of 17+. This is due to the complexity of regular expressions, which may be more suitable for older audiences.

### Can I play Redoku offline?

A network connection is necessary to access the webview with the GitHub link. However, the core Sudoku puzzles may be playable offline, though this is not explicitly stated.

### What is the gameplay like in Redoku?

The gameplay involves solving Sudoku grids where the numbers or patterns must adhere to specific regular expression rules. This offers a unique challenge for those familiar with both Sudoku and regex.

## Version history (last 1 release)

### 1.0 — 2021-07-10

No release notes.

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## More apps by Goldin LLC

- [MyGrades SIS](https://appshunter.io/ios/app/mygrades-sis/id1495113299)
- [Yalies](https://appshunter.io/ios/app/yalies/id6461600780)
- [Meld – Word Game](https://appshunter.io/ios/app/meld-word-game/id6480351996)

All apps by Goldin LLC: https://appshunter.io/developer/1631216558

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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 2026-07-24.*