# Square One: Daily Sudoku — Brain Puzzle & Logic Game

> Brain Puzzle & Logic Game (iPhone/iPad app by Billabyte.)

- Source: https://appshunter.io/ios/app/square-one-daily-sudoku/id6793081417 (this page in markdown: same URL + `.md`)
- Developer: [Billabyte](https://appshunter.io/developer/1723987158)
- Category: Games, Casual, Puzzle
- Price: Free
- Age rating: 4+
- Requires: iOS 16.4 · 92 MB
- Languages: American English
- Released: 2026-09-09
- Data updated: 2026-10-29

## What is Square One?

Square One brings daily Sudoku, guided solving, and fresh puzzles into a calm, focused space. Play solo offline, share a puzzle with a friend, or start a live race with SharePlay on iPhone.

LEARN AS YOU SOLVE
A short illustrated guide introduces the rules. During a puzzle, Learn explains a logical next step on your board. Practise Naked Singles, Hidden Singles, Naked Pairs, and Box-Line reductions at your own pace.

A PUZZLE FOR EVERY DAY
Solve the daily board, build a streak, and review your completed daily puzzle. Choose Easy, Medium, Hard, or Expert for a new board whenever you like. Every generated puzzle has one solution.

MAKE IT YOURS
Use pencil notes, smart highlighting, zoom, undo, and hints. Track solve times, scores, achievements, and technique progress. Earn coins by completing distinct puzzles, then use them to unlock color themes and alternate app icons. Preview a theme before choosing it.

CHALLENGE A FRIEND
Share a puzzle link or QR code so someone else can try the same board and beat your time. On supported iPhones, SharePlay lets you solve the same board together in a live race.

YOUR PACE, YOUR SPACE
Solo puzzles work offline. Square One has no ads, no third-party analytics, and no account system of its own. Puzzles and settings are stored on your device. If you sign in to Game Center, some progress and achievements may sync across your Apple devices. Optional reminders are scheduled on your device.

## Is Square One safe?

Not enough ratings yet to assess Square One.

## Is Square One legit?

Square One: Daily Sudoku appears legitimate, with a few gaps. The AppsHunter Legitimacy Score for Square One is 70 out of 100 points across 7 verification signals from App Store and developer data.


## Version history (last 2 releases)

### 1.0.1 — 2026-10-07

Enjoy a refreshed home screen and improved iPad layouts, with better use of larger screens in portrait and landscape.

Try Daily Deduction, a daily one-move logic challenge with an explanation of the reasoning. Share puzzles by link or QR code, or race friends using SharePlay on supported Apple devices.

Earn coins through puzzles, streaks, and achievements, then use them to unlock themes and alternate app icons.

### 1.0 — 2026-09-10

No release notes.

## More apps by Billabyte

- [Watch or Toss](https://appshunter.io/ios/app/watch-or-toss/id6475340760)
- [Stride: Plan & Achieve](https://appshunter.io/ios/app/stride-plan-and-achieve/id6477325236)
- [DoseEdge](https://appshunter.io/ios/app/doseedge/id6751265838)

All apps by Billabyte: https://appshunter.io/developer/1723987158

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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 2026-10-29.*