# 光年关键词AI扩展工具 vs 知言

The clearest difference is in-app purchases: 知言 at none against 光年关键词AI扩展工具's 2. 光年关键词AI扩展工具's advantage is iOS requirement (9.0 vs 12.0). On price there is nothing between them.

Both are free to download. 光年关键词AI扩展工具 sells 2 one-off in-app purchases. 知言 asks for nothing beyond the download.

## The numbers

| Metric | 光年关键词AI扩展工具 | 知言 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ai/id6450945948/reviews)** |
| Number of ratings | — | **1** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | Yes | **No** |
| Monetization | — | Free |
| Size | 36 MB | 36 MB |
| Requires iOS | **9.0** | 12.0 |
| Age rating | 12+ | 4+ |
| Developer | [光年实验室](https://appshunter.io/developer/1673241315) | [祥利 管](https://appshunter.io/developer/1553028619) |

## What reviewers say

### 光年关键词AI扩展工具

[App page](https://appshunter.io/ios/app/ai/id1673241313)

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 光年关键词AI扩展工具1个月VIP | $14.99 | one-time |
| 光年关键词AI扩展工具12个月VIP | $129.99 | one-time |


### 知言

[App page](https://appshunter.io/ios/app/ai/id6450945948)

This AI prompt assistant offers a vast library of tested templates for content creators, programmers, job seekers, and AI users. It helps users communicate more effectively with AI tools to solve problems, generate code, draft content, and find inspiration.

**Highlights:** Extensive prompt templates, Tested and verified content, Clear categorization, One-click copy and use, Continuous updates, Supports writing, coding, and more

**In-app purchases:** none


## Frequently asked questions

### Is 光年关键词AI扩展工具 free?

光年关键词AI扩展工具 is free to download, with in-app purchases available.

### Is 知言 free?

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

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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.*