# Sudoku Zero — Offline, No Ads — Number puzzles. Buy once.

> Number puzzles. Buy once. (iPhone/iPad app by Byungil Park.)

- Source: https://appshunter.io/ios/app/sudoku-zero-offline-no-ads/id6745084096 (this page in markdown: same URL + `.md`)
- Developer: [Byungil Park](https://appshunter.io/developer/318781673)
- Category: Games, Lifestyle, Board, Puzzle
- Price: $1.99
- Age rating: 4+
- Requires: iOS 16.6 · 2 MB
- Languages: American English, Japanese, Korean, Chinese (Simplified, China)
- Released: 2025-04-30
- Data updated: 2026-09-11
- User reviews in markdown: https://appshunter.io/ios/app/sudoku-zero-offline-no-ads/id6745084096/reviews.md

## What is Sudoku Zero?

No banner ads. No full-screen interruptions. No "watch a video to continue."

Sudoku Zero is built so you can focus on the puzzle. Nothing breaks your
concentration mid-game. No account, no sign-in, no email.

■ Works completely offline
On a plane, underground, or with no signal — it behaves exactly the same.
The app makes no network connections at all, so nothing about you leaves
your device. Your history stays on your iPhone.

■ Buy once, done
No subscription. No in-app purchases. You'll never hit a paywall for hints.
Future updates are included at no extra cost.

■ Three difficulty levels
Easy, Medium and Hard. Every puzzle is generated fresh, so you never
solve the same board twice.

■ Tools that help you think
· Notes — pencil in candidate numbers
· Hints — one cell at a time when you're stuck
· Undo — take back any move
· Highlighting — see the row, column and matching numbers at a glance
· Error detection — spot conflicts the moment they happen

■ Pick up where you left off
Leave mid-game and it saves automatically. Keep several puzzles going
at once and return to whichever you like.

■ Watch yourself improve
Best score per difficulty, completion rate and solve times. Filter by
the last 7 or 30 days to see your progress.

■ Easy on the eyes
Full light and dark mode support, following your system setting.
Optimized for both iPhone and iPad.

■ Four languages
English · 한국어 · 日本語 · 简体中文

One puzzle on a coffee break. One before bed.
If you've been looking for sudoku without the noise, this is it.


## Version history (last 2 releases)

### 2.0 — 2026-08-30

We're now called Sudoku Zero — no ads, no tracking, no internet.

■ Fundamentally better puzzles
The puzzle generator has been rewritten. Every puzzle is now guaranteed to have
exactly one solution, so it's solvable by logic alone and a valid answer will
never be marked wrong.

■ Fully offline
The app no longer makes any network connections at all.
Your history stays on your device.

■ Fixes
· Completed games no longer stay in the "in progress" list
· The completion screen and statistics now show the same score
· Hints used in a resumed game are now counted in your statistics
· The "Auto Lock" setting is now correctly named "Auto-pause"

■ New app icon

### 1.0 — 2025-04-30

No release notes.

## More apps by Byungil Park

- [Crack Detector](https://appshunter.io/ios/app/crack-detector/id1530337221)
- [Contacts Export to Sheet](https://appshunter.io/ios/app/contacts-export-to-sheet/id1532000113)
- [내연봉계산기 - 실수령액, 연봉순위](https://appshunter.io/ios/app/id1564866857)
- [LightScope: Light & EV Meter](https://appshunter.io/ios/app/lightscope-light-and-ev-meter/id1572227924)
- [Banzle - Video Player for Pets](https://appshunter.io/ios/app/banzle-video-player-for-pets/id1610958994)
- [BikeCam Pro](https://appshunter.io/ios/app/bikecam-pro/id6473234309)

All apps by Byungil Park: https://appshunter.io/developer/318781673

---

*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 2026-09-11.*