# NPD知识普及 vs 小岸AI

The clearest difference is price: 小岸AI at Free against NPD知识普及's $0.99. 小岸AI also leads on iOS requirement (13.0 vs 18.5). NPD知识普及's advantage is in-app purchases (none vs 9). On ads and device support there is nothing between them.

小岸AI is free to download; NPD知识普及 costs $0.99 up front. 小岸AI sells 9 one-off in-app purchases. NPD知识普及 asks for nothing beyond the download.

## The numbers

| Metric | NPD知识普及 | 小岸AI |
| --- | --- | --- |
| Price | $0.99 | **Free** |
| Positive reviews | 100.0% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | — |
| Monetization | Paid | — |
| Size | 3 MB | 73 MB |
| Requires iOS | 18.5 | **13.0** |
| Devices | iPhone, iPad | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Guangdong Jianchuan Information Technology Co., Ltd](https://appshunter.io/developer/1822428404) | [深圳岸涌科技有限公司](https://appshunter.io/developer/1641245600) |

## What reviewers say

### 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


### 小岸AI

[App page](https://appshunter.io/ios/app/ai/id6757353935)

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

**In-app purchases (9)**

| Purchase | Price | Billing |
| --- | --- | --- |
| AI币 | $2.99 | one-time |
| AI币 | $4.99 | one-time |
| AI币 | $9.99 | one-time |
| AI币 | $14.99 | one-time |
| AI币 | $39.99 | one-time |
| AI币 | $69.99 | one-time |
| AI币 | $129.99 | one-time |
| AI币 | $299.99 | one-time |
| AI币 | $399.99 | one-time |


## Frequently asked questions

### Is NPD知识普及 free?

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

### Is 小岸AI free?

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

### Do NPD知识普及 or 小岸AI have ads?

Neither NPD知识普及 nor 小岸AI shows ads.

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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.*