# Password Notes vs ChatPro4

The clearest difference is ads: Password Notes at none against ChatPro4's shown. Password Notes also leads on update cadence (every 3 days vs every 3 weeks) and iOS requirement (11.2 vs 13.0). On price, in-app purchases and device support there is nothing between them.

Both are free to download. Password Notes sells 2 in-app purchases, starting at $3.99 per 7 days and ChatPro4 sells 3 in-app purchases, starting at $4.99 per 7 days. Whichever you choose, the download price is not the number that matters.

Password Notes ships an update every 3 days, ChatPro4 every 3 weeks. The most recent releases landed on October 7, 2026 and October 1, 2026 respectively.

## The numbers

| Metric | Password Notes | ChatPro4 |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (2 ratings)](https://appshunter.io/ios/app/chatpro4-ai-chatbot/id6472479300/reviews)** |
| Number of ratings | — | **2** |
| In-app purchases | Yes | Yes |
| Ads | **No** | Yes |
| Update frequency | **Every 3 days** | Every 3 weeks |
| Monetization | — | Free with in-app purchases |
| Size | 39 MB | 17 MB |
| Requires iOS | **11.2** | 13.0 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 12+ |
| Developer | [DATA PERSONAL](https://appshunter.io/developer/1587700276) | [Qijie Information](https://appshunter.io/developer/1717060398) |

## What reviewers say

### Password Notes

[App page](https://appshunter.io/ios/app/password-notes/id1587700274)

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 1 week subscription | $3.99 | per 7 days |
| 3 months subscription | $29.99 | per 3 months |


### ChatPro4

[App page](https://appshunter.io/ios/app/chatpro4-ai-chatbot/id6472479300)

Engage in natural conversations with an AI assistant for advice, information, and creative tasks. It offers writing assistance, translation, planning, and programming help, powered by an advanced AI model with vision and speech-to-text capabilities.

**Highlights:** Advanced AI model (4.0), Vision modeling for picture conversations, Speech-to-text for efficiency, Streaming output for reduced waiting, Role-playing and dialog scenarios, Contextualization and multi-line switching

**Features:** macOS Compatibility

**In-app purchases (3)**

| Purchase | Price | Billing |
| --- | --- | --- |
| Weekly Plus | $4.99 | per 7 days |
| Monthly Plus | $11.90 | per month |
| Annual Plus | $89.99 | per year |


## Frequently asked questions

### Is Password Notes free?

Password Notes is free to download, with in-app purchases available.

### Is ChatPro4 free?

ChatPro4 is free to download, with in-app purchases available.

### Do Password Notes or ChatPro4 have ads?

ChatPro4 shows ads; Password Notes does not.

### Which is updated more often, Password Notes or ChatPro4?

Password Notes ships an update every 3 days, and ChatPro4 every 3 weeks. Most recently, Password Notes was updated on October 7, 2026 and ChatPro4 on October 1, 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.*