# Sudoku.by BinG — Every puzzle has an answer

> Every puzzle has an answer (iPhone/iPad app by 涵宇 朱.)

- Source: https://appshunter.io/ios/app/sudokuby-bing/id6775198044 (this page in markdown: same URL + `.md`)
- Developer: [涵宇 朱](https://appshunter.io/developer/1896773994)
- Category: Education, Utilities
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 17.0 · 23 MB
- Languages: American English
- Released: 2026-06-18
- Data updated: 2026-09-21
- User reviews in markdown: https://appshunter.io/ios/app/sudokuby-bing/id6775198044/reviews.md

## What is Sudoku.by BinG?

Every puzzle has an answer.

A quiet sheet of paper and a problem that works out. sudoku is a minimal, restrained take on the classic — no ads, no tracking, no noise. Just you and the grid.

Warm paper white, a single Morandi accent, monospace numerals under a serif title. Open it and solve; finish and let it go quiet.

Four difficulties
Easy / Medium / Hard / Master. Master ships with world-renowned classic puzzles and a graded bank — from first steps to the very edge.

An AI coach that teaches you to think
Not just answers. Naked singles, hidden singles, naked pairs, pointing pairs, X-Wing — each technique highlighted right on the board, so you see the logic instead of being handed it.

Made for beginners, too
A four-step tutorial on the real board: from the rule to the deduction, then straight into your first game.

Paper mode
Solve like it's newsprint: no mistake limit, nothing flagged, nothing highlighted. The verdict is yours alone.

Tools that stay out of the way
Pencil notes, undo, erase, hints; instant conflict flags and soft region highlights — all switchable.

And more
• Bilingual English / 中文, switch anytime
• Five Morandi accent colors — pick your taste
• 17 illustrated guides, from the rules to master techniques
• Share a puzzle as a text token; challenge a friend on the same board
• Best times and full history
• Carefully tuned haptics and sound
• Fully on-device — your data never leaves your phone

Pay once, yours forever. No subscriptions, no consumables, no ads.

—
Independently designed and built. One person, quietly.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Sudoku Pro — Unlock Forever | $6.99 | one-time |



## Version history (last 3 releases)

### 1.1.1 — 2026-07-11

· Fixed a connection issue with the AI Coach — it's now fast and reliable wherever you are.
 · Minor stability and polish improvements.

### 1.1.0 — 2026-07-02

• AI Coach — optional, step-by-step guidance that helps you reason out the next move, and never just hands you the answer.
• Master's Path — a graded climb through 62 real, difficulty-rated puzzles, from your very first scan to the world's hardest.
• Auto-candidates — every empty cell can now show its possible digits, updated as you play.
• Refined Chinese typography and many small visual polishes.

Every puzzle has an answer. Thanks for playing.

### 1.0 — 2026-06-18

No release notes.

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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 2026-09-21.*