# Sudoku Proof: Daily Logic — Hints that explain every move

> Hints that explain every move (iPhone/iPad app by 献慧 陈.)

- Source: https://appshunter.io/ios/app/sudoku-proof-daily-logic/id6810521523 (this page in markdown: same URL + `.md`)
- Developer: [献慧 陈](https://appshunter.io/developer/1896370005)
- Category: Games, Education, Board, Puzzle
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 10 MB
- Languages: American English, European Spanish, Korean, German (Germany), Chinese (Traditional, Taiwan), Chinese (Simplified, China), French (France), Japanese
- Released: 2026-09-17
- Data updated: 2026-10-12

## What is Sudoku Proof?

Every move has a reason.

Sudoku Proof is a clean, private Sudoku built for uninterrupted play and real learning. Start a puzzle instantly, finish it offline, and understand the logic when you want help. There are no ads, no account, no lives, and no subscription.

PLAY A COMPLETE SUDOKU
- Unlimited Easy, Medium, and Hard puzzles
- A shared Daily Challenge, including Expert and Master days
- Pencil notes with automatic cleanup
- Unlimited undo and redo
- Optional error checking and a timer you can hide
- Automatic local saving after every move
- Light and dark appearance on iPhone and iPad

LEARN THE REASON
Basic reveals help you finish without buying hint packs. Pro adds visual Logic Proofs that highlight the exact candidates, units, and eliminations behind the next step. Practice Singles, Locked Candidates, Pairs, Triples, X-Wing, Skyscraper, XY-Wing, and Swordfish.

BRING YOUR OWN PUZZLE
With Pro, type or paste an 81-cell puzzle, check whether it has one solution, see its difficulty, and solve it step by step.

ONE PURCHASE, NO SUBSCRIPTION
Pro Lifetime permanently unlocks Expert and Master practice, the complete technique school, custom puzzle solving, full daily archive, solve replays, advanced insights, and extra themes. Answer packs for Easy, Medium, Hard, Expert, and Master are separate one-time purchases and are not included in Pro. Restore your purchase at any time.

PRIVATE AND OFFLINE FIRST
Your active game and history are stored locally. Private iCloud sync and Game Center are optional Apple services; either can be unavailable without stopping play or losing the local result.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| Pro Lifetime | $6.99 | one-time |
| Easy Answers | $0.99 | one-time |
| Hard Answers | $1.99 | one-time |
| Medium Answers | $1.49 | one-time |
| Master Answers | $3.99 | one-time |
| Expert Answers | $2.99 | one-time |


## Is Sudoku Proof safe?

Not enough ratings yet to assess Sudoku Proof.

## Is Sudoku Proof legit?

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


## Version history (last 4 releases)

### 1.3 — 2026-10-10

This app is independently developed and maintained by an indie developer. Feedback and bug reports are always welcome. For collaboration inquiries, please contact me by email. Enjoy the app.
Email: yemaozi2026@outlook.com

### 1.2 — 2026-09-23

This app is independently developed and maintained by an indie developer. Feedback and bug reports are always welcome. For collaboration inquiries, please contact me by email. Enjoy the app.
Email: yemaozi2026@outlook.com

Try an included photo to enter a puzzle with on-device OCR and editable review. New non-consumable difficulty unlocks reveal the complete answer and step-by-step reasoning. Landscape play and Settings navigation are improved.

### 1.1 — 2026-09-18

This app is independently developed and maintained by an indie developer. Feedback and bug reports are always welcome. For collaboration inquiries, please contact me by email. Enjoy the app.
Email: yemaozi2026@outlook.com

Compatible with iOS 27.0.
Clearer solution replay, and a practice pack for techniques you already learned.

### 1.0 — 2026-09-17

No release notes.

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## More apps by 献慧 陈

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- [LED Banner - Marquee Scroller](https://appshunter.io/ios/app/led-banner-marquee-scroller/id6761797073)

All apps by 献慧 陈: https://appshunter.io/developer/1896370005

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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 2026-10-12.*