# Attention vs 儿童数独

The clearest difference is ads: 儿童数独 at none against Attention's shown. 儿童数独 also leads on iOS requirement (10.0 vs 12.0). On price, update cadence, in-app purchases and device support there is nothing between them.

Both are free to download. Attention sells 1 one-off in-app purchase and 儿童数独 sells 1 one-off in-app purchase. Whichever you choose, the download price is not the number that matters.

Attention ships an update every 9 months, 儿童数独 every 13 months. The most recent releases landed on October 10, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | Attention | 儿童数独 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.5 (25 ratings)](https://appshunter.io/ios/app/id1671069996/reviews)** |
| Number of ratings | — | **25** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | Yes |
| Ads | Yes | **No** |
| Update frequency | **Every 9 months** | Every 13 months |
| Monetization | — | Free with in-app purchases |
| Size | 19 MB | 23 MB |
| Requires iOS | 12.0 | **10.0** |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [向军 贾](https://appshunter.io/developer/788691093) | [森 袁](https://appshunter.io/developer/1345888871) |

## What reviewers say

### Attention

[App page](https://appshunter.io/ios/app/attention-brain-training/id978324464)

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlock function and off AD | $2.99 | one-time |


### 儿童数独

[App page](https://appshunter.io/ios/app/id1671069996)

This game stimulates children's cognitive abilities, enhancing focus, memory, logic, and reasoning skills through engaging puzzles. It offers a progressive difficulty curve, making learning fun and effective for young minds.

**Highlights:** Enhances focus and attention, Develops logical and reasoning skills, Improves memory and observation, Progressive difficulty levels, Designed for safe child use

**Features:** macOS Compatibility, Family Sharing

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 获取完全版本 | $3.00 | one-time |


## Frequently asked questions

### Is Attention free?

Attention is free to download, with in-app purchases available.

### Is 儿童数独 free?

儿童数独 is free to download, with in-app purchases available.

### Do Attention or 儿童数独 have ads?

Attention shows ads; 儿童数独 does not.

### Which is updated more often, Attention or 儿童数独?

Attention ships an update every 9 months, and 儿童数独 every 13 months. Most recently, Attention was updated on October 10, 2026 and 儿童数独 on October 25, 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.*