# Sereno Sudoku: Offline Classic — Killer, nonogram, big digits

> Killer, nonogram, big digits (iPhone/iPad app by RAFAEL DAVID DEVOS CEREZO.)

- Source: https://appshunter.io/ios/app/sereno-sudoku-offline-classic/id6803223415 (this page in markdown: same URL + `.md`)
- Developer: [RAFAEL DAVID DEVOS CEREZO](https://appshunter.io/developer/6803223417)
- Category: Games, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 107 MB
- Languages: American English, French (France), German (Germany), Italian, European Portuguese, European Spanish
- Released: 2026-09-01
- Data updated: 2026-10-31

## What is Sereno Sudoku?

Sereno Sudoku is sudoku built for playing without rushing: large, clear digits, a clean design, and nothing to distract you from the board. It is now three logic games in one app: Sudoku, Killer Sudoku and Nonogram.

• Classic Sudoku in three difficulties, easy to hard, always with a unique solution
• New: Killer Sudoku, the one with sums. Three levels with 120 puzzles each, every one with a verified unique solution and no given digits, the way the genre is meant to be. Included, no purchase needed, with its own "How to play" guide
• Nonograms (picross): pictures you uncover with logic, with large numbers
• Daily Sudoku challenge with a monthly calendar and streak. Play today's or catch up on any day you missed
• Notes with automatic clean-up and unlimited undo. In Sudoku, hints show you the technique instead of just filling the cell
• Number-first mode: pick a digit, then tap the cells where it goes
• Row, column, box and matching-digit highlighting so you can read the board at a glance
• Three themes: light, sepia and dark. Adjustable digit size
• Optional original music, relaxing and unobtrusive
• No lives, no energy, no waiting. No forced ads mid-game: the only ad that shows up on its own comes after you finish, and videos for an extra hint are always your choice
• In English, Spanish, Portuguese, French, German and Italian
• Works completely offline, no account needed

Premium (optional, one-time purchase) gives unlimited hints, unlocks the dark theme and removes ads. Family Sharing supported: buy it once and share it with your family.

A game by Vossen.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Premium | $3.99 | one-time |


## Is Sereno Sudoku safe?

Not enough ratings yet to assess Sereno Sudoku.

## Is Sereno Sudoku legit?

Sereno Sudoku: Offline Classic appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Sereno Sudoku is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 5 releases)

### 1.4 — 2026-09-24

New: choose how the board looks. A traditional grid with its lines, just like sudoku on paper, or tiles. It applies to Sudoku and Killer, and you can switch any time in Settings → Game.

### 1.3 — 2026-09-22

New: Killer Sudoku, the one with sums. Three levels with 120 puzzles each, all with a unique solution and no given digits, plus a "How to play" guide. Included, no purchase needed. Also: matching digits stand out more, nonogram numbers are 45% larger, and several fixes.

### 1.2.1 — 2026-09-16

Performance improvements and small fixes.

### 1.2 — 2026-09-14

What's new in 1.2:

• Nonograms now reveal a real picture when you solve them: a cat, a mushroom, a watering can…
• New screenshots on the store page.
• And from Settings you can discover Filon, our minesweeper that never makes you guess.
• Small tweaks and fixes so everything runs better.

### 1.1.2 — 2026-09-08

Small tweaks and fixes so everything runs better.
Thank you for playing Sereno.

## Apps similar to Sereno Sudoku

| App | Rating | Price | Category |
| --- | --- | --- | --- |
| [Killer Sudoku - Brain Game](https://appshunter.io/ios/app/killer-sudoku-brain-game/id6760705894) | — | Free | Games |
| [Killer Sudoku: No Ads, Offline](https://appshunter.io/ios/app/killer-sudoku-no-ads-offline/id6814672441) | — | Free | Games |
| [Sudoku - Daily Logic Puzzle](https://appshunter.io/ios/app/sudoku-daily-logic-puzzle/id6737466027) | — | Free | Games |
| [Math Speed - Fast Mental Math](https://appshunter.io/ios/app/math-speed-fast-mental-math/id6796784927) | — | Free | Games |
| [Sudoku Royale: No Ads](https://appshunter.io/ios/app/sudoku-royale-no-ads/id6759472395) | 4.8 (11) | Free | Games |
| [Brain Puzzles: Mini mind games](https://appshunter.io/ios/app/brain-puzzles-mini-mind-games/id6742712741) | 3.0 (1) | Free | Games |

## More apps by RAFAEL DAVID DEVOS CEREZO

- [Filon — Minesweeper 3D](https://appshunter.io/ios/app/filon-minesweeper-3d/id6808169041)
- [Rosca — Nut Sort](https://appshunter.io/ios/app/rosca-nut-sort/id6811680789)
- [Vidrio — Water Sort](https://appshunter.io/ios/app/vidrio-water-sort/id6812298112)

All apps by RAFAEL DAVID DEVOS CEREZO: https://appshunter.io/developer/6803223417

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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 2026-10-31.*