# Classic Sudoku Redux

> Classic Sudoku Redux (iPhone/iPad app by HPR-Solutions.)

- Source: https://appshunter.io/ios/app/classic-sudoku-redux/id1299552037 (this page in markdown: same URL + `.md`)
- Developer: [HPR-Solutions](https://appshunter.io/developer/362297746)
- Category: Games, Puzzle, Trivia
- Price: $0.99
- Age rating: 4+
- Requires: iOS 13.0 · 1 MB
- Languages: American English
- Released: 2018-01-31
- Data updated: 2026-05-23
- User reviews in markdown: https://appshunter.io/ios/app/classic-sudoku-redux/id1299552037/reviews.md

## What is Classic Sudoku Redux?

Classic sudoku puzzle

* endless (computer generated) puzzles in 4 difficulty levels
* many setting options for learning how to play perfectly
* (optionally) calculated digits (pencil marks)
* show errors/hints
* free mode: design your own puzzles or play a newspaper sudoku
* highscore

optionally:
* highlight errors
* highlight all occurrences of a selected number
* highlight finished numbers

digits (pencil marks):
* constantly compute all pencil marks as the sudoku changes
* calculate pencil marks at start
* show marks as numbers or as dots

Have fun playing!


## Version history (last 5 releases)

### 1.5 — 2025-07-02

Bugfixes, new config for digits

### 1.4 — 2021-10-02

Added iOS15 support

### 1.3 — 2021-02-04

bugfixes, ui improvements

### 1.2 — 2019-10-02

iOS updates, dark mode

### 1.1 — 2018-02-28

Bugfixes

## Apps similar to Classic Sudoku Redux

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Sudoku - Daily Puzzles](https://appshunter.io/ios/app/sudoku-daily-puzzles/id1605842465) | 5.0 (3,703) | Free | Games |
| [Sudoku: Train Brain Puzzles](https://appshunter.io/ios/app/sudoku-train-brain-puzzles/id6497716251) | 4.8 (16,775) | Free | Games |
| [Sudoku Classic -Offline Puzzle](https://appshunter.io/ios/app/sudoku-classic-offline-puzzle/id1444261450) | 4.6 (1,000) | Free | Games |
| [Color Slide Jam](https://appshunter.io/ios/app/color-slide-jam/id6741830744) | 4.6 (3,979) | Free | Games |
| [Tangle Rope 3D: Twisted Knot](https://appshunter.io/ios/app/tangle-rope-3d-twisted-knot/id6503892469) | 4.2 (171) | Free | Games |
| [Sudoku.com - Number Games](https://appshunter.io/ios/app/sudokucom-number-games/id1193508329) | 4.8 (1,818,048) | Free | Games |

## More apps by HPR-Solutions

- [RPN 3D Touch](https://appshunter.io/ios/app/rpn-3d-touch/id1038850316)
- [Crazy Bubbles 3D Touch](https://appshunter.io/ios/app/crazy-bubbles-3d-touch/id1084354421)
- [Chalkboard Mines](https://appshunter.io/ios/app/chalkboard-mines/id1236878087)
- [Artificial Horizon](https://appshunter.io/ios/app/artificial-horizon/id1373859786)
- [Drooplets](https://appshunter.io/ios/app/drooplets/id1551555970)

All apps by HPR-Solutions: https://appshunter.io/developer/362297746

---

*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 2026-05-23.*