# Chatbot Open vs John Orr Engineering School

The clearest difference is in-app purchases: John Orr Engineering School at none against Chatbot Open's 2. John Orr Engineering School also leads on ads (none vs shown). Chatbot Open's advantage is update cadence (every 2 days vs every 2 weeks) and iOS requirement (12.0 vs 16.0). On price 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. John Orr Engineering School asks for nothing beyond the download.

Chatbot Open ships an update every 2 days, John Orr Engineering School every 2 weeks. The most recent releases landed on September 8, 2026 and September 4, 2026 respectively.

## The numbers

| Metric | Chatbot Open | John Orr Engineering School |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | Yes | **No** |
| Ads | Yes | **No** |
| Update frequency | **Every 2 days** | Every 2 weeks |
| Size | 34 MB | 53 MB |
| Requires iOS | **12.0** | 16.0 |
| Devices | **iPhone, iPad, iPod** | iPhone, iPad |
| Age rating | 4+ | 12+ |
| Developer | [晓椰 刘](https://appshunter.io/developer/1649682955) | [Nextnow Group (Pty) Ltd](https://appshunter.io/developer/1550928706) |

## 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 |


### John Orr Engineering School

[App page](https://appshunter.io/ios/app/john-orr-engineering-school/id6741505975)

**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 John Orr Engineering School free?

John Orr Engineering School is free to download, with no in-app purchases.

### Do Chatbot Open or John Orr Engineering School have ads?

Chatbot Open shows ads; John Orr Engineering School does not.

### Which is updated more often, Chatbot Open or John Orr Engineering School?

Chatbot Open ships an update every 2 days, and John Orr Engineering School every 2 weeks. Most recently, Chatbot Open was updated on September 8, 2026 and John Orr Engineering School on September 4, 2026.

---

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