# Sudoku: Classic & Killer Grids — Daily Puzzles & Nonograms

> Brain-challenging Sudoku puzzles with multiple modes, difficulty levels, and helpful features. (iPhone/iPad app by Appgeneration Software.)

- Source: https://appshunter.io/ios/app/sudoku-classic-and-killer-grids/id1110306997 (this page in markdown: same URL + `.md`)
- Developer: [Appgeneration Software](https://appshunter.io/developer/386316599)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Rating: 4.70/5 from 566 App Store ratings · 38 written reviews indexed
- Age rating: 4+
- Requires: iOS 14.0 · 285 MB
- Languages: American English, Dutch, European Spanish, Italian, German (Germany), Polish, European Portuguese, Turkish, French (France), Swedish
- Released: 2016-05-11
- Data updated: 2026-10-26
- Monetization: free with in-app purchases
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-classic-and-killer-grids/id1110306997/reviews.md

## What is Sudoku?

One grid or a whole afternoon: find the Sudoku challenge that fits your day. Play classic Sudoku at your level, work through the extra arithmetic of Killer Sudoku, or switch to a Nonogram picture puzzle.

The calendar brings a new classic puzzle each day. Seasonal events add more classic and Killer levels to explore. Hints are there when you need a hand, and light, dark, and sepia themes let you choose a comfortable look. Take your favorite puzzles offline.

Choose how to play:
• Classic Sudoku: fill the grid using logic and find a challenge that matches your mood.
• Killer Sudoku: combine number placement with sums for a different kind of solve.
• Nonogram: use the clues to reveal a picture, square by square.

Come back for the daily calendar puzzle or follow a seasonal event map when you want a series of levels. A hint can help you move forward without leaving the puzzle behind. Switch between light, dark, and sepia themes to make the screen feel right for you. Whether you're at home or on the move, you can keep solving offline.

Pencil in possible numbers for each cell. Your notes update automatically as you fill in the grid.

## Key features

- Hundreds of classic and killer Sudoku puzzles
- 6 difficulty levels from beginner to master
- Daily challenges and limited-time events
- Intelligent hints and pencil notes
- Customizable themes including dark mode
- Auto-save and progress tracking

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Hint Pack | $0.99 | one-time |
| Remove Ads | $2.99 | one-time |


## What do users think of Sudoku?

Reviews of Sudoku are mixed: the game is rated 4.7/5 from 566 App Store ratings. What users like most: makes you think, very readable game. Top complaints: board doesn't turn horizontal, too many ads. Summarized from real user reviews.

**Pros**

- 👍 Makes you think
- 👍 Very readable game
- 👍 Good pastime
- 👍 Relaxing
- 👍 Fun
- 👍 Increases memory and brain power
- 👍 Great way to pass time
- 👍 Fantastic game
- 👍 Good pastime
- 👍 Excellent game
- 👍 Very easy to play
- 👍 Simple as we like
- 👍 Free app
- 👍 Easy to see numbers
- 👍 Clean design
- 👍 Good memo function

**Cons**

- 🐛 Board doesn't turn horizontal
- 🐛 Too many ads
- 🐛 App doesn't load often
- 🐛 Ads not removed after payment
- 🐛 Paid for ad-free, still get ads
- 🐛 Dark blue color hard to see numbers
- 🐛 Difficult to read numbers in blocks
- 🐛 Spinning wheels distraction
- 🐛 Ads appear after every game

**Commonly reported bugs**

- App doesn't load a lot of the time
- Ads not removed after payment
- Paid for ad-free, still get ads
- Dark blue is too dark to see numbers
- Difficult to read numbers once blocks are completed
- App doesn't work since 2019
- Spinning wheels distraction

**Most requested features**

- Add feature for incorrect numbers not being accepted
- Show percentage of players faster than you
- Remove purchase history

## Is Sudoku safe?

Sudoku: Classic & Killer Grids appears safe based on user ratings. The AppsHunter Safety Score for Sudoku is 93 out of 100. This assessment is based on 566 user ratings, with an App Store average of 4.7 out of 5. Of 556 App Store ratings, 93.7% point to a safe experience, 3.8% suggest some concerns, and 2.5% point to a risky experience.

## Is Sudoku legit?

Sudoku: Classic & Killer Grids appears to be a legitimate app. The AppsHunter Legitimacy Score for Sudoku is 95 out of 100 points across 7 verification signals from App Store and developer data.

## Recent user reviews (10 of 38)

All indexed reviews: https://appshunter.io/ios/app/sudoku-classic-and-killer-grids/id1110306997/reviews.md

### 1/5 — Frustrating

*2026-05-18, version 7.5.4*

App keeps freezing or just closing

### 5/5 — Pensar

*2026-03-18, version 7.2.0*

Por eso me gusta. Porque me hace pensar

### 5/5 — A good challenge

*2026-01-13, version 7.0.0*

Challenging & rewarding !

### 4/5 — grandes détente

*2025-12-06*

Sympathique

### 3/5 — 楽しめました

*2025-09-07*

次も頑張ります。梁川ちゃん

**Developer response:** こんにちは、ご意見ありがとうございます。ゲームをお楽しみいただけて嬉しく思います。改善点などございましたら、info@appgeneration.com までお気軽にお問い合わせください。これからもゲームをプレイして楽しんでいただければ幸いです。近いうちに評価を上げてまいります。ありがとうございます。よろしくお願いいたします。

### 1/5 — Primitive stupid

*2025-06-08, version 6.1.7*

The board doesn’t turn horizontal only remains vertical

### 5/5 — Just love it

*2025-06-08, version 6.1.7*

❤️❤️❤️

### 5/5 — Jeu facile

*2025-01-06*

Le jeu est très bien, il est très lisible , et je vais continuer pour m’améliorer.

### 1/5 — Too many ads

*2024-12-19, version 5.7.6*

Cut down on the number of ads

### 5/5 — ALI

*2024-10-05, version 5.7.2*

Thanks

## Frequently asked questions about Sudoku

### What is Sudoku Daily?

Sudoku Daily is a free game that offers hundreds of classic and killer Sudoku puzzles to challenge your brain. It features multiple difficulty levels, daily challenges, and special events to keep gameplay engaging.

### What are the key features of Sudoku Daily?

Key features include hundreds of puzzles across classic and killer modes, six difficulty levels, daily challenges with trophy collection, special limited-time events, intelligent hints, pencil notes, and customizable themes like dark mode.

### Is Sudoku Daily free to play?

Yes, the app is free to play and offers a wide range of puzzles and features. It does include in-app purchases and advertisements.

### What devices is Sudoku Daily compatible with?

While specific compatibility details are not provided, Sudoku Daily is a mobile application designed for smartphones and tablets. Users can typically download and play it on most modern Android and iOS devices.

### How can Sudoku Daily help improve my skills?

The app provides various difficulty levels, from beginner to master, allowing you to gradually improve. Intelligent hints can help you solve puzzles and learn new Sudoku techniques, while stats help you track your performance over time.

## Version history (last 5 releases)

### 7.6.3 — 2026-10-03

Bug fixes
We are always making improvements on the app from time to time to provide a better experience to our users.

### 7.6.1 — 2026-08-22

- Bug fixes
We are always making improvements on the app from time to time to provide a better experience to our users.

### 7.5.9 — 2026-07-21

- Bug fixes
We are always making improvements on the app from time to time to provide a better experience to our users.

### 7.5.5 — 2026-05-19

- Bug fixes
We are always making improvements on the app from time to time to provide a better experience to our users.

### 7.5.4 — 2026-05-13

- Bug fixes
We are always making improvements on the app from time to time to provide a better experience to our users.

## Apps similar to Sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku - Easy Logic Game](https://appshunter.io/ios/app/sudoku-easy-logic-game/id1419097240) | 4.8 (233) | Free | Games |
| [Sudoku Classic Brain Puzzle](https://appshunter.io/ios/app/sudoku-classic-brain-puzzle/id6444699070) | 4.8 (3,708) | Free | Games |
| [Sudoku (No Limits)](https://appshunter.io/ios/app/sudoku-no-limits/id307466242) | 4.8 (8,436) | Free | Games |
| [Sudoku :)](https://appshunter.io/ios/app/sudoku/id398990729) | 4.7 (59,163) | Free | Games |
| [Sudoku·](https://appshunter.io/ios/app/sudoku/id839681682) | 4.7 (17,337) | Free | Games |
| [Sudoku Offline - Offline Games](https://appshunter.io/ios/app/sudoku-offline-offline-games/id1465880121) | 4.7 (192) | Free | Games |

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All apps by Appgeneration Software: https://appshunter.io/developer/386316599

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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 2026-10-26.*