# 防雷安全风险管理系统 vs TextMath

The clearest difference is in-app purchases: 防雷安全风险管理系统 at none against TextMath's 1. 防雷安全风险管理系统 also leads on iOS requirement (9.0 vs 15.1). TextMath's advantage is update cadence (every 5 days vs every 3 weeks). On price, ads and device support there is nothing between them.

Both are free to download. TextMath sells 1 one-off in-app purchase. 防雷安全风险管理系统 asks for nothing beyond the download.

防雷安全风险管理系统 ships an update every 3 weeks, TextMath every 5 days. The most recent releases landed on November 7, 2026 and October 30, 2026 respectively.

## The numbers

| Metric | 防雷安全风险管理系统 | TextMath |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 3 weeks | **Every 5 days** |
| Size | 62 MB | 41 MB |
| Requires iOS | **9.0** | 15.1 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [NUITE](https://appshunter.io/developer/566272460) | [MHOST LTD](https://appshunter.io/developer/1805479638) |

## What reviewers say

### 防雷安全风险管理系统

[App page](https://appshunter.io/ios/app/id1599032095)

**Features:** macOS Compatibility

**In-app purchases:** none


### TextMath

[App page](https://appshunter.io/ios/app/textmath/id6753336547)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Unlimited Pages | $1.99 | one-time |


## Frequently asked questions

### Is 防雷安全风险管理系统 free?

防雷安全风险管理系统 is free to download, with no in-app purchases.

### Is TextMath free?

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

### Do 防雷安全风险管理系统 or TextMath have ads?

Neither 防雷安全风险管理系统 nor TextMath shows ads.

### Which is updated more often, 防雷安全风险管理系统 or TextMath?

防雷安全风险管理系统 ships an update every 3 weeks, and TextMath every 5 days. Most recently, 防雷安全风险管理系统 was updated on November 7, 2026 and TextMath on October 30, 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.*