# 刘老师系列 vs 公路养护工题库

The clearest difference is iOS requirement: 刘老师系列 at 9.0 against 公路养护工题库's 12.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. 刘老师系列 sells 1 one-off in-app purchase and 公路养护工题库 sells 10 one-off in-app purchases. Whichever you choose, the download price is not the number that matters.

刘老师系列 ships an update every 7 months, 公路养护工题库 every 5 months. The most recent releases landed on September 30, 2026 and October 5, 2026 respectively.

## The numbers

| Metric | 刘老师系列 | 公路养护工题库 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | Yes |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Size | 208 MB | 105 MB |
| Requires iOS | **9.0** | 12.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [成城 高](https://appshunter.io/developer/1043441388) | [Changsha Xisai Liman Education Technology Co., Ltd](https://appshunter.io/developer/1466745593) |

## What reviewers say

### 刘老师系列

[App page](https://appshunter.io/ios/app/8/id1207540415)

**Features:** macOS Compatibility

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 解锁全部单元内容 | $1.99 | one-time |


### 公路养护工题库

[App page](https://appshunter.io/ios/app/id1500508323)

**Features:** macOS Compatibility

**In-app purchases (10)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1学币 | $0.99 | one-time |
| 10学币 | $0.99 | one-time |
| 40学币 | $5.99 | one-time |
| 50学币 | $6.99 | one-time |
| 三个月题库 | $11.99 | one-time |
| 三个月找答案+题库 | $14.99 | one-time |
| 100学币 | $14.99 | one-time |
| 120学币 | $17.99 | one-time |
| 150学币 | $19.99 | one-time |
| 300学币 | $39.99 | one-time |


## Frequently asked questions

### Is 刘老师系列 free?

刘老师系列 is free to download, with in-app purchases available.

### Is 公路养护工题库 free?

公路养护工题库 is free to download, with in-app purchases available.

### Do 刘老师系列 or 公路养护工题库 have ads?

Neither 刘老师系列 nor 公路养护工题库 shows ads.

### Which is updated more often, 刘老师系列 or 公路养护工题库?

刘老师系列 ships an update every 7 months, and 公路养护工题库 every 5 months. Most recently, 刘老师系列 was updated on September 30, 2026 and 公路养护工题库 on October 5, 2026.

---

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