# Sudoku Custom - No Ads — Image Recognition  Smart Hints

> Learn and master Sudoku techniques with interactive tutorials and a powerful solver. (iPhone/iPad app by 子健 高.)

- Source: https://appshunter.io/ios/app/sudoku-custom-no-ads/id6740772715 (this page in markdown: same URL + `.md`)
- Developer: [子健 高](https://appshunter.io/developer/1791450219)
- Category: Games, Entertainment, Board, Puzzle
- Price: Free with in-app purchases (on sale, was $9.99)
- Rating: 4.70/5 from 42 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 15.1 · 196 MB
- Languages: American English, Dutch, French (France), German (Germany), Greek, Hindi, Italian, Japanese, Korean, Brazilian Portuguese and 8 more
- Released: 2025-01-28
- Data updated: 2026-08-22
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-custom-no-ads/id6740772715/reviews.md

## What is Sudoku Custom?

Stuck on a hard Sudoku? Want to learn advanced techniques like X-Wing, Swordfish, or ALS? Sudoku Custom is your complete learning system with:

30+ SOLVING TECHNIQUES WITH TUTORIALS
Learn every technique from basic Single Candidate to advanced Almost Locked Sets (ALS), Forcing Chains, and more. Each technique includes:
- Step-by-step explanations
- Visual demonstrations  
- Interactive examples

PERFECT FOR LEARNING
- Beginner? Start with easy techniques
- Advanced? Master expert strategies like Jellyfish, Sue de Coq
- Stuck? Import ANY puzzle and get detailed solving hints

TENS OF THOUSANDS OF PUZZLES
- 7 difficulty levels (Easy → Impossible)
- Fresh challenges every day
- Perfectly generated for quality solving

POWERFUL SOLVER & IMPORT
- Scan or manually input puzzles from newspapers, NYT, Apple News
- Get step-by-step solutions with technique explanations
- Save puzzles for later
- No ads interrupting your learning

COMPETE & TRACK PROGRESS
- Global leaderboards
- Track your solving statistics
- Challenge yourself with harder puzzles

**SUPPORTED TECHNIQUES:**
Naked/Hidden Singles, Pairs, Triples, Quadruples | Block Elimination | X-Wing | Swordfish | Jellyfish | XY-Wing | XYZ-Wing | Skyscraper | X-Chain | Forcing Chains | Almost Locked Sets (ALS) | Sue de Coq | Unique Rectangle | and many more!

Whether you're learning Sudoku or stuck on that impossible puzzle, Sudoku Custom helps you understand WHY each number goes where.

Download now and become a Sudoku expert!

## Key features

- 30+ solving techniques with tutorials
- Import and solve any Sudoku puzzle
- Step-by-step hints and explanations
- Tens of thousands of puzzles
- Global leaderboards and progress tracking
- Image recognition for puzzle import

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Unlock All Features | $4.99 | one-time |


## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/sudoku-custom-no-ads/id6740772715/reviews.md

### 5/5 — The Best Sudoku App

*2026-06-12*

I play sudoku daily for focus and at times even mindfulness relaxation. Having an app that allows the ability to play without distractions or annoyances and allows me to tailor the app to my personal preferences is what is so great about Sudoku Custom. Thank you for your hard work and your vision in developing this app.

**Developer response:** Thanks❤️

### 1/5 — 为什么玩专项训练总是闪退呢

*2026-06-12*

为什么玩专项训练总是闪退呢

**Developer response:** Currently, no crashes have been found in the Tournament Mode. If you experience any issues, please contact us via email.

### 5/5 — Bug Fixed

*2026-05-05*

They fixed the tutorial bug, rather quickly as well, so I feel obligated to update my review. 

The tutorial on this app is one of the best Ive seen. I have 4 sudoku apps and I use this exclusively for tutorial. The tutorial mode alone warrants at 4 stars, but Im giving it 5  because they fixed the bug quickly and the app is relatively user friendly.

**Developer response:** Thanks❤️

### 5/5 — Amazing App

*2026-04-27*

Actually one of the best apps out there.  It’s great for learning techniques of all levels.  I especially like that I can create or import my own puzzle from a book or magazine and get hints that tell me WHAT the next step is and WHY.

**Developer response:** Thanks❤️

### 5/5 — 夯！Great App

*2026-03-30*

A personal Sudoku trainer that guides you to work through problems

**Developer response:** Thanks❤️

### 5/5 — Best so far.

*2026-03-23*

So far this is the best Sudoku app I’ve ever used. I like to solve paper books but can’t always carry them. Now I can save some and do them on my waiting time.

**Developer response:** Thanks❤️

### 5/5 — For serious puzzlers

*2026-03-08*

Excellent interface with powerful solver that provides hints. Extensive tutorial material to help interpret the hints and learn. Can take any muzzle as input from camera or puzzle string. Beautiful work with thousands of puzzles at each difficulty; much harder puzzles available than ordinary sudoku apps.

**Developer response:** Thank you for your support!❤️

### 5/5 — Super helpful

*2025-11-16*

The tutorial section has actual advanced methods and the hints explain what to do and why. Best sudoku app out there!

**Developer response:** Thank you for your support! I will continue to improve the app!

### 5/5 — I Can Do the Newspaper Sudokus with a consistent user experience.

*2025-02-14*

I can Input the NYT,  Apple news and tribune daily sudoku in this app.  You can do them in the paper but the user experience in those apps are limited.  With this app I have a consistent user experience.

**Developer response:** Thank you for your support! I will add more useful features in the future!❤️

### 5/5 — The Ultimate Sudoku Experience

*2025-01-31*

This Sudoku app is a pure delight! The clean interface and thoughtfully designed difficulty levels make it perfect for both beginners and experts. I particularly love the note-taking feature, which makes solving puzzles so much more intuitive. The app is refreshingly free of forced ads, making for an uninterrupted solving experience. The daily challenges are a brilliant addition that keeps me coming back for my daily brain exercise. Looking forward to seeing more difficulty levels and game modes in future updates. Keep up the great quality!

**Developer response:** Thank you for your support!

## Frequently asked questions about Sudoku Custom

### What makes Sudoku Custom a learning system?

Sudoku Custom offers over 30 solving techniques with detailed tutorials, visual demonstrations, and interactive examples. It guides users through each technique, from basic to advanced strategies, helping them understand the logic behind solving.

### Can I import puzzles into Sudoku Custom?

Yes, you can import any Sudoku puzzle into Sudoku Custom. You can scan puzzles from newspapers or manually input them, and the app will provide step-by-step solutions with technique explanations.

### Does Sudoku Custom have ads?

Sudoku Custom contains advertisements. These ads are integrated to support the free version of the app, allowing you to enjoy its features.

### What Sudoku techniques does Sudoku Custom teach?

Sudoku Custom teaches a wide range of techniques, including Naked/Hidden Singles, Pairs, Triples, Quadruples, Block Elimination, X-Wing, Swordfish, Jellyfish, XY-Wing, XYZ-Wing, Skyscraper, X-Chain, Forcing Chains, Almost Locked Sets (ALS), Sue de Coq, and Unique Rectangles, among many others.

### Is Sudoku Custom suitable for beginners?

Yes, Sudoku Custom is perfect for beginners. You can start with easy techniques and gradually progress to more advanced strategies as your skills develop. The app provides clear explanations for all levels.

### How often is Sudoku Custom updated?

The latest version of Sudoku Custom is 2.4.5, and it was last updated on March 30, 2026. Updates typically include new features, bug fixes, and performance improvements.

### What devices is Sudoku Custom available on?

Sudoku Custom is available on iPhone and iPad devices. It is designed to provide a seamless experience across these platforms.

### Does Sudoku Custom offer offline play?

The provided data does not specify whether Sudoku Custom supports offline play. However, its features like puzzle import and technique learning suggest it may require an internet connection for certain functionalities.

## Version history (last 5 releases)

### 2.5.8 — 2026-07-15

1.bugs fixed

### 2.5.7 — 2026-07-01

1.bugs fixed

### 2.5.6 — 2026-06-15

1.bugs fixed

### 2.5.5 — 2026-06-11

1.bugs fixed

### 2.5.4 — 2026-06-10

1.bugs fixed

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## More apps by 子健 高

- [Sudoku Custom Pro](https://appshunter.io/ios/app/sudoku-custom-pro/id6743707991)
- [Data Structures and Algorithms](https://appshunter.io/ios/app/data-structures-and-algorithms/id6783425095)
- [Killer Sudoku - No Ads](https://appshunter.io/ios/app/killer-sudoku-no-ads/id6792245436)

All apps by 子健 高: https://appshunter.io/developer/1791450219

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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 2026-08-22.*