# Sudoku XO

> Sudoku XO (iPhone/iPad app by Joseph Tremba.)

- Source: https://appshunter.io/ios/app/sudoku-xo/id6741941118 (this page in markdown: same URL + `.md`)
- Developer: [Joseph Tremba](https://appshunter.io/developer/1787960882)
- Category: Games, Puzzle
- Price: $0.99
- Age rating: 4+
- Requires: iOS 26.0 · 61 MB
- Languages: American English
- Released: 2025-02-16
- Data updated: 2026-08-20
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-xo/id6741941118/reviews.md

## What is Sudoku XO?

This version of the Sudoku game is intended for the advanced player. A diagonal puzzle format, overlap, double overlap, and quad overlap puzzle formats are supported in addition to the traditional 9x9 format. Additional features are provided to allow you to solve even the toughest puzzles including: 
1. input error prevention* 
2. highlighting* 
3. possible numbers* 
4. continuous updating of possible numbers*
5. snapshot screen storage
6. completed numbers
7. hints 
8. puzzle solution 
9. puzzle magnification
10. camera puzzle entry. 
   * configurable options


## Version history (last 4 releases)

### 1.2.1 — 2026-08-19

Added Start screen for first time users.

### 1.2.0 — 2026-05-02

Added the double overlap and quad overlap puzzle formats.
The camera may now be used to enter a standard puzzle, and the puzzle background color may now be changed.

### 1.1.0 — 2026-01-17

This version supports the iPhone and the iPad.
Puzzle magnification has been added for easier viewing.
No ads!

### 1.0.0 — 2025-02-17

No release notes.

## More apps by Joseph Tremba

- [Sudoku X+](https://appshunter.io/ios/app/sudoku-x-plus/id6740011126)
- [Tip Pool+](https://appshunter.io/ios/app/tip-pool-plus/id6743686482)
- [Tennis Set Score](https://appshunter.io/ios/app/tennis-set-score/id6772381424)
- [PickleBall Points](https://appshunter.io/ios/app/pickleball-points/id6783129920)

All apps by Joseph Tremba: https://appshunter.io/developer/1787960882

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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 2026-08-20.*