# 数字九宫格 vs 数独训练营

The clearest difference is iOS requirement: 数字九宫格 at 8.1 against 数独训练营's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

数字九宫格 ships an update weekly, 数独训练营 every 5 days. The most recent releases landed on November 2, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | 数字九宫格 | 数独训练营 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[1.0 (1 ratings)](https://appshunter.io/ios/app/id1319977532/reviews)** | — |
| Number of ratings | **1** | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Weekly | **Every 5 days** |
| Size | 25 MB | 70 MB |
| Requires iOS | **8.1** | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Jong Min Deng](https://appshunter.io/developer/601390889) | [雪芹 李](https://appshunter.io/developer/1507400358) |

## What reviewers say

### 数字九宫格

[App page](https://appshunter.io/ios/app/id1319977532)

**Features:** macOS Compatibility

**In-app purchases:** none


### 数独训练营

[App page](https://appshunter.io/ios/app/id1546479271)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 数字九宫格 free?

数字九宫格 is free to download, with no in-app purchases.

### Is 数独训练营 free?

数独训练营 is free to download, with no in-app purchases.

### Do 数字九宫格 or 数独训练营 have ads?

Neither 数字九宫格 nor 数独训练营 shows ads.

### Which is updated more often, 数字九宫格 or 数独训练营?

数字九宫格 ships an update weekly, and 数独训练营 every 5 days. Most recently, 数字九宫格 was updated on November 2, 2026 and 数独训练营 on October 4, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*