# 精准防艾N端 vs NPD知识普及

The clearest difference is price: 精准防艾N端 at Free against NPD知识普及's $0.99. 精准防艾N端 also leads on update cadence (monthly vs every 7 months) and iOS requirement (12.0 vs 18.5). On ads, in-app purchases and device support there is nothing between them.

精准防艾N端 is free to download; NPD知识普及 costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

精准防艾N端 ships an update monthly, NPD知识普及 every 7 months. The most recent releases landed on October 12, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | 精准防艾N端 | NPD知识普及 |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Monthly** | Every 7 months |
| Monetization | — | Paid |
| Size | 151 MB | 3 MB |
| Requires iOS | **12.0** | 18.5 |
| Devices | iPhone, iPod | iPhone, iPad |
| Age rating | 17+ | 4+ |
| Developer | [Zizhuyuanshang(Beijing)Information Technology Co., Ltd.](https://appshunter.io/developer/591573462) | [Guangdong Jianchuan Information Technology Co., Ltd](https://appshunter.io/developer/1822428404) |

## What reviewers say

### 精准防艾N端

[App page](https://appshunter.io/ios/app/n/id1376441916)

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

**In-app purchases:** none


### NPD知识普及

[App page](https://appshunter.io/ios/app/npd/id6749845582)

This app provides comprehensive knowledge, assessment, coping strategies, and support for individuals interested in Narcissistic Personality Disorder (NPD). It draws from psychological research and clinical experience to help users understand NPD and find professional assistance.

**Highlights:** NPD knowledge base, Self-assessment tools, Coping strategy guidance, Professional support resources, Based on psychological research, Clinical practice experience

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

**In-app purchases:** none


## Frequently asked questions

### Is 精准防艾N端 free?

精准防艾N端 is free to download, with no in-app purchases.

### Is NPD知识普及 free?

NPD知识普及 costs $0.99, with no in-app purchases.

### Do 精准防艾N端 or NPD知识普及 have ads?

Neither 精准防艾N端 nor NPD知识普及 shows ads.

### Which is updated more often, 精准防艾N端 or NPD知识普及?

精准防艾N端 ships an update monthly, and NPD知识普及 every 7 months. Most recently, 精准防艾N端 was updated on October 12, 2026 and NPD知识普及 on October 15, 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.*