# NumberPlace Infinity — Classic puzzle game > Classic Sudoku puzzle game with infinite, auto-generated, and user-created puzzles. (iPhone/iPad app by Seventh rank Inc..) - Source: https://appshunter.io/ios/app/numberplace-infinity/id409116907 (this page in markdown: same URL + `.md`) - Developer: [Seventh rank Inc.](https://appshunter.io/developer/408148416) - Category: Games, Education, Board, Family - Price: Free with in-app purchases - Rating: 4.80/5 from 4 App Store ratings · 21 written reviews indexed - Age rating: 4+ - Requires: iOS 13.0 · 14 MB - Languages: American English, Japanese - Released: 2011-11-02 - Data updated: 2026-08-22 - Monetization: free with in-app purchases - User reviews in markdown: https://appshunter.io/ios/app/numberplace-infinity/id409116907/reviews.md ## What is NumberPlace Infinity? A cumulative total of 1 million downloads in the series! ▼Number Place is Known as Sudoku as well. Complete this grid by placing all the digit from 1 to 9 in each row and column. Also, you are allowed to use each digit only once in every 3x3 shaded or white mini-grid in the puzzle. ▼Puzzle features - Number Place for FREE You can enjoy Sudoku for free, so please make brain trainings as much as you like. - 5 difficulty levels You can choose the difficulty levels; We offer 5 levels from Very Easy, to Easy, Normal, Hard, and Very Hard. - Number of puzzles is infinite In addition to the 250 puzzles that is instantly available, Number Place ∞ is equipped with the feature of automated generation of Sudoku puzzles. You can also create and enjoy your own Sudoku puzzles for free and infinitely. Number Place Infinite allows you to create new Sudoku puzzles whenever you’d like. ▼ Additional features - Track the number you filled in by leaving notes. Check sheet is also available to find which number is filled in already on the screen. 2 types of check marks here: When you tap once, a check-mark is displayed in green. When you tap again, it turns to a cross-mark, and the number would turn into gray accordingly. It'd be recommended making your own rules in advance. For example, count a check-mark as the number you are looking for, and a cross-mark as the number you already filled in. This way you can continue the game very smoothly after the break. - Redo and correct the wrong number with the history function. - Can play music in the background. - Number Place Infinite saves the battery more than other Sudoku apps ## Key features - Infinite Sudoku puzzle generation - Five difficulty levels - Note-taking and check sheet - History function for redo/correction - Background music support - Battery-saving optimization ## Pricing and in-app purchases Base price: Free. **One-time purchases** | Purchase | Price | Type | | --- | --- | --- | | Advanced Pack Lv1 | $1.99 | one-time | | Advanced Pack Lv2 | $1.99 | one-time | | Advanced Pack Lv3 | $1.99 | one-time | | Expert Pack Lv1 | $1.99 | one-time | | Expert Pack Lv2 | $1.99 | one-time | | Expert Pack Lv3 | $1.99 | one-time | ## Recent user reviews (10 of 21) All indexed reviews: https://appshunter.io/ios/app/numberplace-infinity/id409116907/reviews.md ### 5/5 — 喜び *2025-10-06* 時間掛かるけれど、完成して、ホッとする ### 4/5 — ナンプレの作成について *2025-08-23* 最初からナンプレを作成したいのに、作成するボタンを押すと、すでに盤面にいくつか数字がある状態で、その数字を消したりができません。盤面に数字が1つもない状態から作成するはできますか？ ### 4/5 — 激むずパックを購入しましたが超激むずがロック解除になっています *2022-07-13* 激むずパックを購入しましたが超激むずパックがロック解除になっています。 購入履歴を確認すると激むずパック購入済みになっているのですが……何故なんでしょうか。 ### 1/5 — 無題 *2022-06-07* スパイダーソリティアの広告出ないようにしてください。 クモが嫌いなので、表示されてると気持ち悪くて不快です。 ### 4/5 — 説明が・・・ *2021-07-21* 数独を初めてやっています。最初はどうやるの？と思っていましたが、なんとか色々調べて始めることができました。 初心者向けにチュートリアルがあればいいと思います。 ### 5/5 — 作成した問題ふつうの47がおかしい *2021-02-28* 作成した問題ふつうの47がおかしい ### 5/5 — 脳トレ *2020-10-12* 少しの時間でも利用して、脳の活性化。 初級から上級者迄色々な問題が有るので遊び易い。 ### 5/5 — 難易度が *2020-03-21* たくさん用意されていてとっつきやすい あと、思った以上に歯応えがあってずっとやっていられる ナンクロ好きにはたまらないな ### 3/5 — 数独ファン *2020-03-18* 使い切った数字が自動的に消えないのが残念。 超難問がほしい。 ### 5/5 — 楽しいです。 *2019-10-07* すこしまごつくこともありますが完成するとすごく嬉しいです。もっと征服したいです。 ## Frequently asked questions about NumberPlace Infinity ### What is NumberPlace Infinity? NumberPlace Infinity is a free classic Sudoku puzzle game where you fill a grid with digits 1-9. It offers infinite puzzles, five difficulty levels, and features like note-taking and a history function for corrections. ### How many puzzles are available in NumberPlace Infinity? NumberPlace Infinity offers an infinite number of puzzles. It comes with 250 instantly available puzzles and features automated generation, allowing you to create new Sudoku puzzles whenever you like. ### Can I play NumberPlace Infinity offline? Yes, NumberPlace Infinity can be played offline. The core gameplay of solving Sudoku puzzles does not require an internet connection, making it suitable for on-the-go play. ### Does NumberPlace Infinity have ads? Yes, NumberPlace Infinity contains advertisements. As a free game with in-app purchases, it utilizes ads to support its development and ongoing availability. ### What are the difficulty levels in NumberPlace Infinity? NumberPlace Infinity offers five distinct difficulty levels to cater to all players: Very Easy, Easy, Normal, Hard, and Very Hard. This allows users to select challenges that match their skill and preference. ### How does the note-taking feature work in NumberPlace Infinity? The note-taking feature allows you to track numbers you've filled in. You can use two types of check marks: a green check-mark for a potential number and a gray cross-mark to indicate a number already filled in. ### Is NumberPlace Infinity suitable for all ages? NumberPlace Infinity is rated for ages 4 and up. Its logic-based gameplay is generally considered safe and beneficial for cognitive development across a wide age range. ### How often is NumberPlace Infinity updated? The latest version of NumberPlace Infinity is 2.0, last updated on October 30, 2025. While specific update frequency isn't detailed, this indicates ongoing support and potential for new content or features. ## Version history (last 5 releases) ### 2.0 — 2025-10-30 Now supports larger screen sizes. Updated internal system. Minor fixes. ### 1.13 — 2025-10-26 Bug fixes. ### 1.12 — 2025-06-10 -Fixed bugs on iPad + iOS18. -Minor fixes. Please enjoy. ### 1.11 — 2025-06-02 Bug Fixes. Please enjoy. ### 1.10 — 2023-07-05 Update internal library. ## Apps similar to NumberPlace Infinity | App | Rating | Price | Category | | --- | --- | --- | --- | | [Sudoku1000 -Number place game](https://appshunter.io/ios/app/sudoku1000-number-place-game/id1518540429) | 4.5 (34) | Free | Games | | [Sudoku - Sudoku Puzzle Game -](https://appshunter.io/ios/app/sudoku-sudoku-puzzle-game/id1596298388) | 4.8 (43) | Free | Games | | [Sudoku -Popular Games-](https://appshunter.io/ios/app/sudoku-popular-games/id1442443982) | 4.6 (37) | Free | Games | | [Number Place - Popular puzzle!](https://appshunter.io/ios/app/number-place-popular-puzzle/id909558228) | 4.8 (4) | Free | Games | | [Number Place by Fifol](https://appshunter.io/ios/app/number-place-by-fifol/id951758107) | 4.4 (18) | Free | Games | | [Sudoku Purple: Aesthetic](https://appshunter.io/ios/app/sudoku-purple-aesthetic/id975090531) | 4.6 (136) | Free | Games | ## More apps by Seventh rank Inc. - [ゆがみバランスチェック 村上式](https://appshunter.io/ios/app/id678172025) - [NumberPlace Lv999](https://appshunter.io/ios/app/numberplace-lv999/id769663884) - [Tap Princess - Clicker RPG](https://appshunter.io/ios/app/tap-princess-clicker-rpg/id1082743620) - [ねこやしき](https://appshunter.io/ios/app/id1133460694) - [Nonograms 999](https://appshunter.io/ios/app/nonograms-999/id1172964810) All apps by Seventh rank Inc.: https://appshunter.io/developer/408148416 --- *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.*