# AI Lab vs 注册环保工程师圣题库

The clearest difference is in-app purchases: AI Lab at none against 注册环保工程师圣题库's 10. AI Lab also leads on iOS requirement (9.0 vs 11.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 注册环保工程师圣题库 sells 10 one-off in-app purchases. AI Lab asks for nothing beyond the download.

AI Lab ships an update every 2 months, 注册环保工程师圣题库 monthly. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | AI Lab | 注册环保工程师圣题库 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 2 months | **Monthly** |
| Size | 765 MB | 43 MB |
| Requires iOS | **9.0** | 11.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 17+ | 4+ |
| Developer | [正彩 刘](https://appshunter.io/developer/1212206358) | [Sheng Cai E-books (Wuhan) Co., Ltd.](https://appshunter.io/developer/1448965022) |

## What reviewers say

### AI Lab

[App page](https://appshunter.io/ios/app/ai-lab/id1213711574)

**Features:** macOS Compatibility

**In-app purchases:** none


### 注册环保工程师圣题库

[App page](https://appshunter.io/ios/app/id1565311375)

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 圣才月卡VIP会员 | $3.99 | one-time |
| 圣才季卡VIP会员 | $9.99 | one-time |
| 88圣才币 | $12.99 | one-time |
| 128圣才币 | $19.99 | one-time |
| 圣才半年卡VIP会员 | $19.99 | one-time |
| 圣才考研半年卡VIP会员 | $19.99 | one-time |
| 168圣才币 | $24.99 | one-time |
| 208圣才币 | $29.99 | one-time |
| 圣才年卡VIP会员 | $29.99 | one-time |
| 圣才考研年卡VIP会员 | $29.99 | one-time |


## Frequently asked questions

### Is AI Lab free?

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

### Is 注册环保工程师圣题库 free?

注册环保工程师圣题库 is free to download, with in-app purchases available.

### Do AI Lab or 注册环保工程师圣题库 have ads?

Neither AI Lab nor 注册环保工程师圣题库 shows ads.

### Which is updated more often, AI Lab or 注册环保工程师圣题库?

AI Lab ships an update every 2 months, and 注册环保工程师圣题库 monthly. Most recently, AI Lab was updated on November 2, 2026 and 注册环保工程师圣题库 on November 3, 2026.

---

*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*