# OneulDo Puzzle - Sudoku, Logic — Nonogram, Block Escape, Brain

> Nonogram, Block Escape, Brain (iPhone/iPad app by JongHee Lim.)

- Source: https://appshunter.io/ios/app/oneuldo-puzzle-sudoku-logic/id6828201723 (this page in markdown: same URL + `.md`)
- Developer: [JongHee Lim](https://appshunter.io/developer/6818856506)
- Category: Games, Board, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 17.0 · 3 MB
- Languages: American English
- Released: 2026-10-31
- Data updated: 2026-11-01

## What is OneulDo Puzzle?

Sudoku, nonogram, block escape, color zones, block fill and sliding puzzles. Six brain puzzles in one app.
Every puzzle has exactly one solution and can be solved by logic alone, without guessing.
No sign-in, no ads, and it works offline.

The app is currently in Korean.

SIX PUZZLES
- Sudoku: from a 6x6 mini board to Easy, Medium, Hard and Expert. Difficulty is set by the solving techniques each board needs.
- Nonogram (picross): paint cells by the row and column clues to reveal a picture.
- Block escape: slide blocks to clear a path for the strawberry block. Try for the fewest moves.
- Color zones: place one macaron in every row, column and color zone.
- Block fill: cover the board with the given pieces, no gaps.
- Sliding: slide the number tiles into order from 1.

LEVELS AND DIFFICULTY
- Choose Easy, Medium or Hard for each puzzle and the levels keep going.
- Earn 1 to 3 stars per level. Unfinished boards are saved.

HINTS THAT TEACH
- A hint first highlights where to look and explains why. Tap again and it makes the move for you.
- Hard Sudoku hints show techniques such as pointing pairs, naked pairs and X-Wing on the board.

TODAY'S PUZZLE
- Three new puzzles every day, the same for everyone. Solve all three to keep your streak.
- Share your result without the answers.

YOUR RECORDS
- Times, personal bests and a streak calendar.

Records stay on this device. No personal data is collected.
Privacy policy: https://oneuldopuzzle.smartinfol.com/privacy
Contact: support@smartinfol.com

## Is OneulDo Puzzle safe?

Not enough ratings yet to assess OneulDo Puzzle.

## Is OneulDo Puzzle legit?

OneulDo Puzzle - Sudoku, Logic appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for OneulDo Puzzle is 65 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 1 release)

### 1.0 — 2026-10-31

No release notes.

## More apps by JongHee Lim

- [TodaysDoIt: To-Do & Calendar](https://appshunter.io/ios/app/todaysdoit-to-do-and-calendar/id6821601400)
- [OneulDoEat: Meal Planner](https://appshunter.io/ios/app/oneuldoeat-meal-planner/id6823227264)
- [오늘Do클래스](https://appshunter.io/ios/app/do/id6824230575)
- [OneulDo Chess - Learn with AI](https://appshunter.io/ios/app/oneuldo-chess-learn-with-ai/id6828930716)

All apps by JongHee Lim: https://appshunter.io/developer/6818856506

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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 2026-11-01.*