# 刘老师系列 vs 老土文化

The clearest difference is in-app purchases: 老土文化 at none against 刘老师系列's 1. 刘老师系列's advantage is iOS requirement (9.0 vs 13.0). On price, update cadence, ads and device support there is nothing between them.

Both are free to download. 刘老师系列 sells 1 one-off in-app purchase. 老土文化 asks for nothing beyond the download.

刘老师系列 ships an update every 7 months, 老土文化 every 5 months. The most recent releases landed on October 15, 2026 and October 18, 2026 respectively.

## The numbers

| Metric | 刘老师系列 | 老土文化 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 months** |
| Size | 208 MB | 14 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [成城 高](https://appshunter.io/developer/1043441388) | [章晟 潘](https://appshunter.io/developer/440223956) |

## 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 |


### 老土文化

[App page](https://appshunter.io/ios/app/id1493761401)

**Features:** macOS Compatibility

**In-app purchases:** none


## 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 老土文化 free?

老土文化 is free to download, with no in-app purchases.

### Do 刘老师系列 or 老土文化 have ads?

Neither 刘老师系列 nor 老土文化 shows ads.

### Which is updated more often, 刘老师系列 or 老土文化?

刘老师系列 ships an update every 7 months, and 老土文化 every 5 months. Most recently, 刘老师系列 was updated on October 15, 2026 and 老土文化 on October 18, 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.*