# NumberBox9 — Enjoy the fun of numbers.

> Enjoy the fun of numbers. (iPhone/iPad app by 凯 曹.)

- Source: https://appshunter.io/ios/app/numberbox9/id6760333853 (this page in markdown: same URL + `.md`)
- Developer: [凯 曹](https://appshunter.io/developer/1508289151)
- Category: Games
- Price: $0.99
- Age rating: 4+
- Requires: iOS 17.0 · 1 MB
- Languages: American English
- Released: 2026-03-26
- Data updated: 2026-08-08
- User reviews in markdown: https://appshunter.io/ios/app/numberbox9/id6760333853/reviews.md

## What is NumberBox9?

NumberBox9: A Logical Feast at Your Fingertips
Looking to ignite your brain during spare moments? NumberBox9 offers the ultimate, distraction-free Sudoku experience. With thousands of puzzles ranging from beginner to expert, our smart hints and mistake tracking guide your journey to mastery. Featuring a minimalist design, it immerses you in the pure joy of numerical logic. Whether for a commute break or nightly relaxation, NumberBox9 is your personal gym for the mind. Download now and start solving!


## Version history (last 3 releases)

### 1.2.0 — 2026-08-03

The classic campaign mode is here. Journey from 3x3 beginner all the way to 9x9 grandmaster across 7 stages and 115 levels, with difficulty ramping up within each stage. Only the first level is open by default; clear a level to unlock the next, and clear the last level of a stage to unlock the next stage.
- Campaign: 7 stages (Beginner, Advanced, Challenge, Skilled, Expert, Master, Grandmaster). Difficulty steps from Easy to Master within each stage.
- Timer: The clock starts on your first move. Pause anytime, and the app auto-pauses when sent to the background. The header shows your live time in MM:SS format.
- Records: Each completion saves your best time and star rating. The result screen shows your time, personal best, and target time, with a New! badge when you set a record.
- Star ratings: 1 star for finishing, 2 stars for beating the target time, 3 stars for finishing within 80% of the target. Level select shows your stars and best time.
- Records Center: Overview of total stars and cleared levels, per-stage progress, and a list of your recent completions.
The tutorial and free practice modes are still available from the Select Mode screen. Enjoy the fun of numbers.

### 1.1.0 — 2026-07-15

This update focuses on polishing the core game feel and making every puzzle fair, responsive, and accessible.
- **
- **Smoother visuals
- Better feedback: Added haptics
- Pause anytime: Tap the
- **Mist
- **More
Thanks for playing — more levels and features are on the way!

### 1.0 — 2026-03-26

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 2026-08-08.*