# Sudoku HD! — Two keypads for easier entry > Sudoku puzzle game with dual keypads and smart note features. (iPhone/iPad app by Optime Software LLC.) - Source: https://appshunter.io/ios/app/sudoku-hd/id397229659 (this page in markdown: same URL + `.md`) - Developer: [Optime Software LLC](https://appshunter.io/developer/289278460) - Category: Games, Entertainment, Board, Puzzle - Price: Free with in-app purchases - Rating: 4.50/5 from 707 App Store ratings · 238 written reviews indexed - Age rating: 4+ - Requires: iOS 12.0 · 128 MB - Languages: American English - Released: 2010-12-15 - Data updated: 2026-08-27 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/sudoku-hd/id397229659/reviews.md ## What is Sudoku HD!? Take a journey to feudal Japan with Sudoku Free HD. With beautiful graphics and killer features, Sudoku Free HD is the best Sudoku app available for the iPad. DUAL KEYPAD ENTRY Two separate keypads, one for entries and one for notes, allow you to enter values quickly and easily. No more tedious switching between entry mode and note mode to complete your puzzle. SMART NOTES The optional auto-notes feature enters all of the notes into the puzzle for you and keeps them updated as you solve. If you don't want that much help, the optional smart notes feature automatically deletes values from notes you have entered manually when they are no longer valid. ERROR CHECKING The optional error checker tells you when you have entered an incorrect or illogical value, allowing you to catch errors early and preventing needless frustration. MULTIPLE DIFFICULTY LEVELS Five difficulty levels, from easy to insane, ensure that you will be able to find a puzzle that matches your skill level. With 3,000 total puzzles, you won't run out of puzzles any time soon. Download Sudoku Free HD for free today and start playing Sudoku the way it was meant to be played! ## Key features - Dual keypad entry - Smart notes feature - Optional auto-notes - Optional error checking - Multiple difficulty levels - Thousands of puzzles ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Puzzle Pack - Showa | $0.99 | one-time | | Puzzle Pack - Kurikara | $0.99 | one-time | | Puzzle Pack - Subushi | $0.99 | one-time | | Puzzle Pack - Miura | $0.99 | one-time | | Puzzle Pack - Kasagi | $0.99 | one-time | | Puzzle Pack - Ishizu | $0.99 | one-time | | Puzzle Pack - Sakai | $0.99 | one-time | | Puzzle Pack - Genpei | $0.99 | one-time | | Puzzle Pack - Norada | $0.99 | one-time | | Puzzle Pack - Meiji | $0.99 | one-time | | Puzzle Pack - Taisho | $0.99 | one-time | ## What do users think of Sudoku HD!? Overall sentiment: neutral **Pros** - 👍 Easy to use - 🤓 Challenging puzzles - 🎶 Relaxing music - 💻 Great interface - 🧠 Keeps mind active **Cons** - 🔍 Too many ads - 🔄 Crashes and freezes - 🎨 Dislike new layout changes - 🤦‍♂️ Penalizes for mistakes - 🔒 Cannot revert to old version **Commonly reported bugs** - Puzzles marked as completed when they are not - Crashes when trying to play 'insane' level puzzles - Purchases not restoring across devices **Most requested features** - Allow resetting of puzzles - Provide level selection options - Automatically clear notes when number is entered - Add landscape mode support ## Recent user reviews (10 of 238) All indexed reviews: https://appshunter.io/ios/app/sudoku-hd/id397229659/reviews.md ### 1/5 — Too many ads. Stay away! *2025-07-22, version 2.00* The ad does not go away. Forces to click on a game. Scammers! ### 1/5 — The latest revision ruined it!!! *2024-09-09, version 2.00* I LOVED this game. It was WONDERFUL. I gave it five stars! But the latest version absolutely ruined it for me. The new layout appearance makes it unplayable for me. The numbers used to stand out in a way that made it visually easy to perceive how the "possibles" related to the "entries." At a glance I could see when an "answer" canceled a "possible." But the new layout makes them look so similar that my eyes have a hard time seeing what's what. PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE PLEASE bring back the old layout appearance. PLEASE! I cannot play the game the way it is now. And there doesn't seem to be any way to revert to the old appearance. One of my very favorite games ruined! ### 3/5 — It’s good, but… *2024-04-13, version 2.00* If you reset a puzzle, it doesn’t reset the timer for the puzzle. It also penalizes you for being dyslexic because there are two keypads, and you will reach for the wrong keypad and be punished for doing so. ### 1/5 — Used to love it *2024-03-21, version 2.00* The latest update to version 2.00 changed the graphics from smooth and calming to harsh and contrasty. The highlight for rows and columns nearly washes out cell contents. The markers are so big they all but cover notes in surrounding cells. Unless there comes a way to revert to previous graphics I’ll be playing a different Sudoku elsewhere. ### 5/5 — Works great *2024-03-13, version 2.00* Best Sudoku game I've ever used! I wish it allowed me to reset the Insane level or allow me to buy more games at that level. Thanks. ### 5/5 — Audio *2024-03-06, version 2.00* Great, gets harder as you go! ### 5/5 — New version. *2024-03-06, version 2.00* In the older version, when you touched the puzzle, the shaded squares weren’t so dark. I recently upgraded to the new version and I’m finding the dark shading very distracting. ### 2/5 — Sudoku *2024-03-03, version 2.00* I love the game, however, I don’t like the new look, change for the sake of change, why? Just my opinion. ### 2/5 — Update *2024-03-01, version 2.00* I hate the new format - if it ain’t broke don’t change it! ### 5/5 — Crashes constantly *2024-02-10, version 1.60* The app closes unexpectedly and I lose my progress. In order to play, I have to constantly return to the main menu, then resume my game to save my progress. I have purchased several sets of puzzles. I am using iOS 15.8 on iPad Air 2, which is the latest iOS for the device. Even after saving constantly, sometimes puzzles crash constantly and will not allow me to complete them. ## Frequently asked questions about Sudoku HD! ### What is Sudoku HD!? Sudoku HD! is a mobile application designed for playing Sudoku puzzles. It features a feudal Japan theme with beautiful graphics and offers advanced features to enhance the gameplay experience. ### What are the key features of Sudoku HD!? Key features include dual keypads for faster entry, a smart notes feature that can automatically add or delete notes, and an optional error checker to help you catch mistakes. It also offers multiple difficulty levels and a large library of puzzles. ### Is Sudoku HD! free to download? Yes, the application is free to download. However, it does contain advertisements and offers in-app purchases, which may provide additional features or remove ads. ### What devices is Sudoku HD! compatible with? Based on the description, the app is specifically mentioned as being available for the iPad. Compatibility with other devices is not detailed. ### How does the dual keypad system work? The dual keypad system provides two separate keypads: one for entering numbers into the puzzle and another for making notes. This eliminates the need to constantly switch between modes, allowing for quicker and more efficient puzzle completion. ## Version history (last 5 releases) ### 2.00 — 2024-02-22 • Added support for Autolayout • Fixed issues with smart buttons and smart notes • Minor bug fixes ### 1.60 — 2017-10-07 This app has been updated by Apple to display the Apple Watch app icon. • Minor bug fixes ### 1.51 — 2015-12-15 • Fixed issue which was causing puzzles to have duplicate numbers on iOS 7 devices • Fixed issue which was causing application to crash when game board screen was exited • Updated for iOS 9 • Minor bug fixes ### 1.50 — 2015-10-02 • Updated for iOS 9 • Minor bug fixes ### 1.45 — 2013-10-11 • Updated for iOS 7 • Minor bug fixes ## Apps similar to Sudoku HD! | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sudoku - Soduko - Soduku](https://appshunter.io/ios/app/sudoku-soduko-soduku/id1407295066) | 4.7 (269) | Free | Games | | [Sudoku Cafe](https://appshunter.io/ios/app/sudoku-cafe/id540946844) | 4.7 (191) | Free | Games | | [Sudoku: Sudoku Puzzle](https://appshunter.io/ios/app/sudoku-sudoku-puzzle/id1415474002) | 4.7 (365) | Free | Games | | [Sudoku by Joseph](https://appshunter.io/ios/app/sudoku-by-joseph/id421136193) | 4.7 (2,394) | Free | Games | | [Daily Sudoku Puzzles](https://appshunter.io/ios/app/daily-sudoku-puzzles/id540340398) | 4.7 (142) | Free | Games | | [Sudoku Epic](https://appshunter.io/ios/app/sudoku-epic/id431473459) | 4.8 (410) | Free | Games | ## More apps by Optime Software LLC - [Tic Tac Toe ∙](https://appshunter.io/ios/app/tic-tac-toe/id289278457) - [Four in a Row.](https://appshunter.io/ios/app/four-in-a-row/id292882605) - [Four in a Row Pro](https://appshunter.io/ios/app/four-in-a-row-pro/id294204179) - [Tic Tac Toe Pro](https://appshunter.io/ios/app/tic-tac-toe-pro/id294293446) - [Checkers ・](https://appshunter.io/ios/app/checkers/id294664915) - [Checkers Premium](https://appshunter.io/ios/app/checkers-premium/id294841947) All apps by Optime Software LLC: https://appshunter.io/developer/289278460 --- *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 2026-08-27.*