# Bubu Sudoku — Calm daily Sudoku puzzles

> Calm daily Sudoku puzzles (iPhone/iPad app by Haosheng Li.)

- Source: https://appshunter.io/ios/app/bubu-sudoku/id6787663053 (this page in markdown: same URL + `.md`)
- Developer: [Haosheng Li](https://appshunter.io/developer/1437181734)
- Category: Games, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 18.0 · 11 MB
- Languages: American English
- Released: 2026-07-16
- Data updated: 2026-08-29
- User reviews in markdown: https://appshunter.io/ios/app/bubu-sudoku/id6787663053/reviews.md

## What is Bubu Sudoku?

Bubu Sudoku is a clean, focused Sudoku app for daily play and steady practice.

Play a fresh daily puzzle, choose a difficulty, or pick Mini for a quick 6x6 board with 2x3 boxes. Use notes, undo and redo freely, track progress, and improve your solving speed over time. An optional local daily reminder helps you keep your streak — no account or cloud sync required. Sudoku Pro is a one-time unlock for Master and Evil difficulty, Killer Sudoku, Sprint and Marathon modes, and six months of daily history.

Game Center support lets players submit best times to leaderboards by mode and difficulty. Local play works without an account.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sudoku Pro | $9.99 | one-time |



## Version history (last 5 releases)

### 1.3.1 — 2026-08-20

Now supports iOS 18 and later, with compatibility updates and stability improvements across daily, classic, and Mini play.

### 1.3 — 2026-08-11

Adds carefully timed ads for free play; Sudoku Pro remains completely ad-free. Includes stability and polish improvements.

### 1.2 — 2026-07-31

Introduces a full-bleed Sudoku board icon, clearer solving-technique tracking, and more dependable game-state handling.

### 1.1 — 2026-07-23

- Improved Classic puzzle difficulty consistency.
- Fixed Killer Sudoku puzzle generation and cage-aware hints.
- Improved Marathon progress recovery and iCloud settings sync.
- Refined gameplay controls and the Sudoku Pro purchase screen.
- Additional reliability and accessibility improvements.

### 1.0 — 2026-07-16

No release notes.

## More apps by Haosheng Li

- [BoxLabels](https://appshunter.io/ios/app/boxlabels/id6787662579)
- [PdfMark](https://appshunter.io/ios/app/pdfmark/id6787662984)
- [Brae – Private AI Assistant](https://appshunter.io/ios/app/brae-private-ai-assistant/id6789849618)

All apps by Haosheng Li: https://appshunter.io/developer/1437181734

---

*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 2026-08-29.*