# arpha kids vs 凌度钥匙Plus

The clearest difference is iOS requirement: arpha kids at 10.0 against 凌度钥匙Plus's 13.0. 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.

arpha kids ships an update every 5 weeks, 凌度钥匙Plus every 3 weeks. The most recent releases landed on September 9, 2026 and September 17, 2026 respectively.

## The numbers

| Metric | arpha kids | 凌度钥匙Plus |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 weeks | **Every 3 weeks** |
| Size | 300 MB | 38 MB |
| Requires iOS | **10.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Fuwei Global Co., Ltd.](https://appshunter.io/developer/1468455802) | [Shenzhen Lingdu Auto Electronics Co., Ltd.](https://appshunter.io/developer/1727524224) |

## What reviewers say

### arpha kids

[App page](https://appshunter.io/ios/app/arpha-kids/id1605561386)

**Features:** macOS Compatibility

**In-app purchases:** none


### 凌度钥匙Plus

[App page](https://appshunter.io/ios/app/plus/id6448126824)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is arpha kids free?

arpha kids is free to download, with no in-app purchases.

### Is 凌度钥匙Plus free?

凌度钥匙Plus is free to download, with no in-app purchases.

### Do arpha kids or 凌度钥匙Plus have ads?

Neither arpha kids nor 凌度钥匙Plus shows ads.

### Which is updated more often, arpha kids or 凌度钥匙Plus?

arpha kids ships an update every 5 weeks, and 凌度钥匙Plus every 3 weeks. Most recently, arpha kids was updated on September 9, 2026 and 凌度钥匙Plus on September 17, 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.*