# :) Sudoku +

> Unlimited Sudoku puzzles with advanced hints and 17 difficulty levels. (iPhone/iPad app by Jason Linhart.)

- Source: https://appshunter.io/ios/app/sudoku-plus/id285994151 (this page in markdown: same URL + `.md`)
- Developer: [Jason Linhart](https://appshunter.io/developer/285994154)
- Category: Games, Entertainment, Board, Puzzle
- Price: $2.99
- Rating: 4.87/5 from 6,497 App Store ratings · 307 written reviews indexed
- Age rating: 4+
- Requires: iOS 12.0 · 5 MB
- Languages: English
- Released: 2019-02-11
- Data updated: 2026-06-10
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-plus/id285994151/reviews.md

## What is :) Sudoku +?

With unlimited play at seventeen difficulty levels, novices and experienced players alike will appreciate :) Sudoku +. Our tutorial, extensive feature set, and advanced hint system offer something for every player. The more you play, the more you will enjoy it!

Our multi-stage hint system starts with a gentle reminder to get you back on track, and works up to an illustration of the exact technique to use and how it applies to the current board. Our hints ease those frustrating moments and teach you how to be a better player.

Features include:

- Puzzle generator for unlimited play
- Scan puzzles from books/newspaper using camera
- 17 difficulty levels, something for everyone
- Tutorial teaches you new techniques
- Large, high contrast digits are easier to read
- Enter games from the newspaper
- Solver helps you with games from the newspaper
- Advanced techniques at the higher levels, including X-Wings, sashimi fish, and XY-Chains
- User interface optimized for fewer touches
- Choice of six color schemes
- Never covers up the board while you are playing
- Infinite undo/redo
- Undo to the last solvable position
- Board solvable indicator
- Automatic or manual pencil marks
- Save your game while you try alternatives
- Automatically saves your game when you get a phone call, switch applications, or lock the phone
- Highlighting helps you discover patterns
- Game clock; compares your time to other players
- Avoids graphic frills that distract from play
- Choice of digit styles, including Kanji and Hanzi

All games are true Sudoku, with symmetry and a single solution that can be discovered by logic alone. If you doubt that a puzzle can be solved by logic, simply have the hint system explain it to you step by step.

If you enjoy Sudoku, this is the app for you!

## Key features

- Unlimited puzzle generation
- 17 difficulty levels
- Multi-stage hint system
- Camera puzzle scanning
- Tutorial for new techniques
- Advanced logic techniques
- Infinite undo/redo

## What do users think of :) Sudoku +?

Overall sentiment: positive

**Pros**

- 🚀 Best Sudoku app
- 👍 Intuitive and user-friendly
- 💡 Excellent learning and tutorial features
- 👍 Customizable settings and options
- 👍 Variety of difficulty levels
- 👍 No ads or in-app purchases
- 👍 Ability to import puzzles from photos

**Cons**

- 🐛 Scan from camera and photo library not working in recent updates
- 🐛 Crashes when trying to access certain features
- 🔒 Concerns about clipboard access
- 👎 Outdated or unclear tutorial explanations for advanced techniques

**Commonly reported bugs**

- Scan from camera and photo library not working
- Crashes when accessing certain features
- Inconsistent difficulty levels across puzzles

**Most requested features**

- Dark mode or custom color themes
- Ability to pause/stop timer
- Option to view all possible next moves
- Ability to edit imported puzzles

## Recent user reviews (10 of 307)

All indexed reviews: https://appshunter.io/ios/app/sudoku-plus/id285994151/reviews.md

### 5/5 — Best one

*2025-02-09, version 5.3.1*

Hands down my favorite sudoku app. Simple and to the point.

### 5/5 — This is the only Sudoku worth playing

*2025-02-03, version 5.3.1*

By all means try all the other sudokus but if you do you will come back to this. It is unquestionably the best.

### 1/5 — No longer works

*2025-02-01, version 5.3.1*

No longer works on new IPad

### 5/5 — Worth paying for.

*2025-01-30, version 5.3.1*

I don't pay for games, I paid for this one! Only complaint, there isn't an Android version.

### 1/5 — Clip board access

*2025-01-22, version 5.3.1*

Why does this need access to my clipboard?  Deleted it immediately

### 5/5 — Best Sudoku App

*2025-01-15, version 5.3.1*

Been using this app for many years. Best sudoku app I know of.

### 5/5 — This IS the best sudoku game

*2024-12-18, version 5.3.1*

Love this game. It is easy to play with many different levels.

### 5/5 — Look no more

*2024-12-16, version 5.3.1*

Exactly what I want from a sudoku app. No more and no less. Having tried loads of different apps I have now ceased my search. No WiFi required comes in very handy at some boring signal less places.

### 1/5 — Security/Privacy Issue

*2024-12-12, version 5.3.1*

The app requests permission to access my clipboard, which I consistently deny. Why does this app need to see my clipboard? I suspect it’s to steal sensitive information, including passwords. Therefore, I’m deleting it. I strongly advise against using this app.

### 5/5 — Great Game

*2024-12-11, version 5.3.1*

I’ve been playing this game every morning for years. Thank you!

## Frequently asked questions about :) Sudoku +

### What is :) Sudoku +?

:) Sudoku + is a mobile application that provides an unlimited supply of Sudoku puzzles. It caters to all skill levels with 17 distinct difficulty settings and offers a comprehensive hint system designed to assist players and teach them advanced techniques.

### What are the key features of :) Sudoku +?

Key features include a puzzle generator for unlimited play, a multi-stage hint system that can explain techniques, 17 difficulty levels, a tutorial, the ability to scan puzzles from books or newspapers using your camera, and advanced logic techniques for higher levels.

### Is :) Sudoku + free to use?

Yes, the application is completely free to use. It does not contain advertisements or in-app purchases, allowing for an uninterrupted and unrestricted Sudoku experience.

### Who is the target audience for this Sudoku app?

This app is designed for anyone who enjoys playing Sudoku, regardless of their experience level. Whether you are a novice looking to learn the basics or an experienced player seeking to master advanced strategies, this app offers challenges and learning opportunities.

### Can I use puzzles from physical newspapers with this app?

Yes, you can. The app features a camera scanning function that allows you to capture puzzles from books or newspapers. It also includes a solver that can assist you with games from the newspaper.

## Version history (last 5 releases)

### 5.3.1 — 2021-02-11

Fixed crashing bug in scan from camera and photo library.  
Restored Play button in Style of Play description.
:) Sudoku + is now usable in Dark Mode, although still missing complete support.

### 5.3 — 2020-12-10

Improved support for the iPhone X,11,12 and newer iPad pros

### 5.2.6 — 2016-08-24

Minor bug fixes.
Updated in 5.2.5:
Improved compatibility with newer versions of iOS.
Added support for split view multitasking (when available).
Fixed on/off sliders in Settings sometimes getting "stuck".
Forcing the screen orientation is no longer available. Please use the system supplied orientation lock.
Now requires iOS 6 or newer.

### 5.2.5 — 2016-08-16

Improved compatibility with newer versions of iOS.
Added support for split view multitasking (when available).
Fixed on/off sliders in Settings sometimes getting "stuck".
Forcing the screen orientation is no longer available. Please use the system supplied orientation lock.
Now requires iOS 6 or newer.

### 5.2.1 — 2014-10-13

Fixed the digit pad locking out in some situations. Fixed statistics failing to reset. Various other minor bug fixes. Updated in 5.2: Added a new difficulty level: Maelstrom. Now supports iOS 8 and the new iPhone 6 & 6 Plus.

## Apps similar to :) Sudoku +

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Killer Sudoku - Brain Games](https://appshunter.io/ios/app/killer-sudoku-brain-games/id1532397340) | 4.6 (1,342) | Free | Games |
| [Sudoku· Classic Puzzle Games](https://appshunter.io/ios/app/sudoku-classic-puzzle-games/id1409781798) | 4.7 (59,623) | Free | Games |
| [▻Sudoku](https://appshunter.io/ios/app/sudoku/id366247306) | 4.8 (653,143) | Free | Games |
| [Sudoku Joy: Number Master Game](https://appshunter.io/ios/app/sudoku-joy-number-master-game/id1460985516) | 4.9 (664) | Free | Games |
| [Sudoku·](https://appshunter.io/ios/app/sudoku/id839681682) | 4.7 (16,931) | Free | Games |
| [Sudoku Quest - Puzzle Games](https://appshunter.io/ios/app/sudoku-quest-puzzle-games/id671755288) | 4.7 (1,789) | Free | Games |

## More apps by Jason Linhart

- [:) Sudoku](https://appshunter.io/ios/app/sudoku/id286516944)
- [Sudoku Joy](https://appshunter.io/ios/app/sudoku-joy/id331585707)

All apps by Jason Linhart: https://appshunter.io/developer/285994154

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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 2026-06-10.*