# 敬业签HD vs 知我 AI

The clearest difference is in-app purchases: 知我 AI at none against 敬业签HD's 10. 知我 AI also leads on update cadence (every 2 weeks vs every 2 months) and device support (3 vs 1). 敬业签HD's advantage is iOS requirement (9.0 vs 15.0). On price and ads there is nothing between them.

Both are free to download. 敬业签HD sells 6 one-off in-app purchases. 知我 AI asks for nothing beyond the download.

敬业签HD ships an update every 2 months, 知我 AI every 2 weeks. The most recent releases landed on October 6, 2026 and October 8, 2026 respectively.

## The numbers

| Metric | 敬业签HD | 知我 AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 2 weeks** |
| Size | 243 MB | 3 MB |
| Requires iOS | **9.0** | 15.0 |
| Devices | iPad | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [河南礼恰网络科技有限公司](https://appshunter.io/developer/1296559827) | [杰栋 何](https://appshunter.io/developer/1896629335) |

## What reviewers say

### 敬业签HD

[App page](https://appshunter.io/ios/app/hd/id1547212340)

**In-app purchases (6)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 黄金会员1个月20元 | $2.99 | one-time |
| 终身黄金会员（减免） | $39.99 | one-time |
| 终身黄金会员（减免） | $49.99 | one-time |
| 终身黄金会员（减免） | $59.99 | one-time |
| 终身黄金会员（减免） | $69.99 | one-time |
| 终身黄金会员（减免） | $79.99 | one-time |


### 知我 AI

[App page](https://appshunter.io/ios/app/ai/id6780978880)

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

**In-app purchases:** none


## Frequently asked questions

### Is 敬业签HD free?

敬业签HD is free to download, with in-app purchases available.

### Is 知我 AI free?

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

### Do 敬业签HD or 知我 AI have ads?

Neither 敬业签HD nor 知我 AI shows ads.

### Which is updated more often, 敬业签HD or 知我 AI?

敬业签HD ships an update every 2 months, and 知我 AI every 2 weeks. Most recently, 敬业签HD was updated on October 6, 2026 and 知我 AI on October 8, 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.*