# 一建题库 vs 老妖精

The clearest difference is in-app purchases: 老妖精 at none against 一建题库's 3. 一建题库's advantage is iOS requirement (9.0 vs 13.0). On price, ads and device support there is nothing between them.

Both are free to download. 一建题库 sells 3 one-off in-app purchases. 老妖精 asks for nothing beyond the download.

## The numbers

| Metric | 一建题库 | 老妖精 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 8 months | — |
| Size | 8 MB | 106 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [磊 陈](https://appshunter.io/developer/1535417260) | [Shanghai Xiaozhu Education Technology Co., Ltd.](https://appshunter.io/developer/992171869) |

## What reviewers say

### 一建题库

[App page](https://appshunter.io/ios/app/2027/id1566712682)

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

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 一个月VIP套餐 | $8.99 | one-time |
| 一年VIP套餐 | $9.99 | one-time |
| 三年VIP套餐 | $14.99 | one-time |


### 老妖精

[App page](https://appshunter.io/ios/app/id6760744668)

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

**In-app purchases:** none


## Frequently asked questions

### Is 一建题库 free?

一建题库 is free to download, with in-app purchases available.

### Is 老妖精 free?

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

### Do 一建题库 or 老妖精 have ads?

Neither 一建题库 nor 老妖精 shows ads.

---

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