# Cross Sum - Number Puzzle

> Cross Sum - Number Puzzle (iPhone/iPad app by 宏斌 樊.)

- Source: https://appshunter.io/ios/app/cross-sum-number-puzzle/id1514735753 (this page in markdown: same URL + `.md`)
- Developer: [宏斌 樊](https://appshunter.io/developer/1452129040)
- Category: Education
- Price: Free with in-app purchases
- Age rating: 4+
- Requires: iOS 16.0 · 11 MB
- Languages: English, French, German, Japanese, Korean, Chinese, Spanish, Chinese
- Released: 2020-05-23
- Data updated: 2026-06-20
- User reviews in markdown: https://appshunter.io/ios/app/cross-sum-number-puzzle/id1514735753/reviews.md

## What is Cross Sum?

CrossSum is a clean number puzzle game built around addition, logic, and focused daily practice.

Fill each blank cell with a number from 1 to 9. Every connected row or column segment must add up to its clue, and numbers cannot repeat within the same segment. The rules are simple, but every board rewards careful thinking.

Features:
- Daily puzzle: a fixed challenge for each day
- Training mode: practice boards from 5x5 to 8x8
- Progress stats: track completions, time, and practice history
- Theme colors: personalize the look of the app
- Daily reminders: set a time to keep your puzzle habit going
- Offline play: open the app and solve whenever you like

If you enjoy number puzzles, Sudoku, Kakuro, math games, brain training, or logic challenges, CrossSum is designed to be a quiet daily puzzle you can return to anytime.

## Pricing and in-app purchases

Base price: Free.

**One-time purchases**

| Purchase | Price | Type |
| --- | --- | --- |
| 去除广告插件 | $3.99 | one-time |



## Version history (last 5 releases)

### 3.80 — 2026-06-13

Rebuilt features and interface with improved Daily Puzzle, Training, Stats, and theme experience.

### 3.60 — 2025-10-06

1. Support iOS 26.0.

### 3.50 — 2025-04-06

1. Fixed some issues.

### 3.30 — 2024-12-06

1. Support iOS18.1.

### 3.20 — 2023-12-07

1.Support iOS17.

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## More apps by 宏斌 樊

- [中国古诗词-国学经典赏析](https://appshunter.io/ios/app/id1185747521)
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- [Java程序设计](https://appshunter.io/ios/app/java/id1372576617)
- [Python编程学习通](https://appshunter.io/ios/app/python/id1395429052)
- [C++程序设计](https://appshunter.io/ios/app/c-plus-plus/id1395830025)
- [Schulte Table-Speed Reading!](https://appshunter.io/ios/app/schulte-table-speed-reading/id1407932377)

All apps by 宏斌 樊: https://appshunter.io/developer/1452129040

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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 2026-06-20.*