# Chatbot Open vs Learn CSS

The clearest difference is in-app purchases: Learn CSS at none against Chatbot Open's 2. Chatbot Open's advantage is update cadence (every 2 days vs every 2 months) and iOS requirement (12.0 vs 15.1). On price, ads and device support there is nothing between them.

Both are free to download. Chatbot Open sells 2 in-app purchases, starting at $0.99 per 7 days. Learn CSS asks for nothing beyond the download.

Chatbot Open ships an update every 2 days, Learn CSS every 2 months. The most recent releases landed on October 9, 2026 and October 12, 2026 respectively.

## The numbers

| Metric | Chatbot Open | Learn CSS |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/learn-css-styling-and-flexbox/id6757161168/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | Yes | **No** |
| Ads | Yes | Yes |
| Update frequency | **Every 2 days** | Every 2 months |
| Monetization | — | Free |
| Size | 34 MB | 116 MB |
| Requires iOS | **12.0** | 15.1 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 4+ |
| Developer | [晓椰 刘](https://appshunter.io/developer/1649682955) | [Nagy Solaiman](https://appshunter.io/developer/6809016106) |

## What reviewers say

### Chatbot Open

[App page](https://appshunter.io/ios/app/chatbot-openassistant-pro/id1671756566)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Pro for 1 Week | $0.99 | per 7 days |
| Pro for 1 Month | $2.99 | per month |


### Learn CSS

[App page](https://appshunter.io/ios/app/learn-css-styling-and-flexbox/id6757161168)

Master Cascading Style Sheets with interactive lessons, a real-time code editor, and gamified challenges. Learn fundamentals, responsive design, and modern layouts to build professional web designs.

**Highlights:** Interactive CSS tutorials, Real-time code editor, Daily coding tips and quizzes, Gamified learning with XP and achievements, Professional UI mockup assets, Offline lesson access

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

**In-app purchases:** none


## Frequently asked questions

### Is Chatbot Open free?

Chatbot Open is free to download, with in-app purchases available.

### Is Learn CSS free?

Learn CSS is free to download, with no in-app purchases.

### Do Chatbot Open or Learn CSS have ads?

Both Chatbot Open and Learn CSS show ads.

### Which is updated more often, Chatbot Open or Learn CSS?

Chatbot Open ships an update every 2 days, and Learn CSS every 2 months. Most recently, Chatbot Open was updated on October 9, 2026 and Learn CSS on October 12, 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.*