# SudokuScan — Your smart sudoku solver

> AI-powered Sudoku scanner and solver that detects printed and handwritten numbers. (iPhone/iPad app by Christoph Reinders.)

- Source: https://appshunter.io/ios/app/sudokuscan/id1193045084 (this page in markdown: same URL + `.md`)
- Developer: [Christoph Reinders](https://appshunter.io/developer/986674785)
- Category: Games, Entertainment, Family, Puzzle
- Price: Free
- Rating: 3.70/5 from 9 App Store ratings · 10 written reviews indexed
- Age rating: 4+
- Requires: iOS 13.0 · 12 MB
- Languages: American English
- Released: 2017-01-10
- Data updated: 2026-08-21
- Monetization: free
- User reviews in markdown: https://appshunter.io/ios/app/sudokuscan/id1193045084/reviews.md

## What is SudokuScan?

SudokuScan turns your mobile device into a powerful sudoku scanner. It automatically detects your sudokus including the printed and handwritten numbers. SudokuScan solves every solvable sudoku and gives you a hint when your are stuck on a tough sudoku. You can also see the solution if you want to impress your friends by solving it as the fastest.

FEATURES
* AI-based Sudoku scanning
* Powerful compter vision and machine learning algorithms for automatic detection
* Optical character recognition (OCR) of printed and handwritten numbers
* Live preview thanks to efficient image processing
* Get hints or show the solution
* Save your scanned Sudokus to get another hint later
* Pick photos from your gallery
* Works on curved surfaces like books

TIPS
* Place the Sudoku on a flat surface
* Use a black pen
* Do not cover parts of the Sudoku, for example with a pen
* Make sure the other side of the paper doesn't show through

We would love to hear from you. If you have questions, feedback, or suggestions, please contact us. Also if you have a sudoku that is not detected correctly, please take a photo and send it to us and we will improve the algorithm.

E-Mail: hi@sudokuscan.app

## Key features

- AI-based Sudoku scanning
- OCR for printed and handwritten numbers
- Live preview with efficient image processing
- Get hints or show the solution
- Save scanned Sudokus
- Pick photos from gallery
- Works on curved surfaces

## Recent user reviews (10 of 10)

All indexed reviews: https://appshunter.io/ios/app/sudokuscan/id1193045084/reviews.md

### 1/5 — No

*2025-08-01, version 1.3*

For some strange reason no matter how I printed it the sudoku puzzle couldn’t find a valid answer. Doesn’t work, extremely confusing to use, wouldn’t recommend. Use a different app.

### 3/5 — Ja, aber ;)

*2025-07-30, version 1.3*

Ich beiße mir an einem Experten-Sudoku seit 3 Tagen die Zähne aus. Mit meinen Mitteln komme ich nicht weiter. 5 KIs sind daran gescheitert. Inkl. einer Sudoku-KI. Tja, was soll ich sagen - diese App hat es gelöst. AAAABER sie verrät mir nicht, wie… 😭 Ich möchte nicht irgendwelche Zahlen in mein Sudoku malen, sondern wissen wieso die da hinkommen.

### 1/5 — Absolute garbage

*2022-06-26, version 1.3*

This app is absolute garbage. It doesn’t work had every number programmed in correctly and it said no solution. App is junk

### 5/5 — Genial!! ★

*2021-06-08, version 1.1*

★ SUPER-GENIAL ★ KOSTENLOS ★

### 1/5 — App doesn’t even work

*2020-04-28, version 1.1*

The scanner is very very very poor

### 5/5 — Works like a charm if photo quality is adequate

*2019-12-24, version 1.1*

Make sure you take the photo of the sudoku puzzle with good lighting and without distortion then the app will do just what it is supposed to do. I tested it with some sudokus with the size of approximately 10 by 10 cm printed on non glossy paper with plain white background and recognition was 100% correct.

### 1/5 — Pointless and not worth the download

*2019-11-19, version 1.1*

Doesn’t work. It’s pointless

### 5/5 — Sehr schöne Umsetztung

*2018-02-21, version 1.1*

Funktioniert sehr gut, top Leistung der Entwickler.

### 5/5 — Große Hilfe, wenn man mal nicht weiterkommt

*2017-01-30, version 1.0.2*

Diese App ist die beste Hilfe fürs Sudoku. Erkennt fast immer alles richtig, sogar meine Handschrift auf gewölbtem Papier, und das im Urlaub, offline am Strand. Man kann sich einzelne weitere Zahlen als "kleine Hilfestellung" einfügen lassen, oder direkt das ganze Sudoku lösen. Außerdem erkennt die App sofort, wenn ein Rätsel nicht (mehr) lösbar ist.

### 5/5 — coole App

*2017-01-30, version 1.0.2*

Jetzt kann ich beim Sudoku in ein paar Sekunden cheaten. Echt cool was da heute möglich ist. Hut ab!

## Frequently asked questions about SudokuScan

### How does SudokuScan work?

SudokuScan uses AI-powered computer vision and machine learning algorithms to scan your Sudoku puzzles. It employs optical character recognition (OCR) to detect both printed and handwritten numbers, even on curved surfaces like books.

### Can SudokuScan solve handwritten Sudokus?

Yes, SudokuScan is designed to detect and solve Sudokus with both printed and handwritten numbers. It utilizes OCR technology to accurately read your handwriting.

### What if I get stuck on a Sudoku?

If you're stuck on a tough Sudoku, SudokuScan can provide you with hints to help you progress. You can also choose to see the full solution if you wish.

### Can I save Sudokus I've scanned?

Yes, you can save your scanned Sudokus within the app. This allows you to return to them later to get another hint or check the solution.

### Does SudokuScan work offline?

The provided data does not specify if SudokuScan works offline. However, its core functionality of scanning and solving likely requires an internet connection for processing.

### What devices does SudokuScan support?

SudokuScan is available for iPhones and iPods. It is compatible with iOS devices.

### What is the age rating for SudokuScan?

SudokuScan has an age rating of 4+, making it suitable for a wide range of users.

### How often is SudokuScan updated?

The latest version of SudokuScan was released on June 17, 2022. While the exact update frequency isn't detailed, this indicates it receives periodic updates.

## Version history (last 5 releases)

### 1.3 — 2022-06-17

In this version, we improved the Sudoku scanning even further and fixed a bug in the Sudoku solving algorithm.

### 1.2 — 2022-04-10

Improved Sudoku scanning algorithms and UI updates

### 1.1 — 2017-10-09

This app has been updated by Apple to display the Apple Watch app icon.

Update for iOS 11 and iPhone X

### 1.0.2 — 2017-01-16

Improved sudoku recognition algorithm

### 1.0.1 — 2017-01-12

Improved sudoku recognition algorithm

## Apps similar to SudokuScan

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku Scanner and Solver](https://appshunter.io/ios/app/sudoku-scanner-and-solver/id6477549752) | — | Free | Games |
| [Sudoku Solver - Puzzle Game](https://appshunter.io/ios/app/sudoku-solver-puzzle-game/id1618814060) | — | Free | Games |
| [Sudoku Custom - No Ads](https://appshunter.io/ios/app/sudoku-custom-no-ads/id6740772715) | 4.7 (42) | Free | Games |
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| [NumberMind: My Number](https://appshunter.io/ios/app/numbermind-my-number/id1153953634) | — | Free | Games |
| [Sudoku Break - AI Scan Images](https://appshunter.io/ios/app/sudoku-break-ai-scan-images/id1591740455) | 5.0 (2) | Free | Games |

## Related topics

[sudoku solver app](https://appshunter.io/ios/topics/sudoku-solver-app)

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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 2026-08-21.*