# DDchat AI vs Note Taking App

The clearest difference is in-app purchases: Note Taking App at none against DDchat AI's 2. Note Taking App also leads on iOS requirement (17.0 vs 26.0). DDchat AI's advantage is ads (none vs shown). On price, update cadence and device support there is nothing between them.

Both are free to download. DDchat AI sells 2 one-off in-app purchases. Note Taking App asks for nothing beyond the download.

DDchat AI ships an update every 3 days, Note Taking App every 2 days. The most recent releases landed on October 17, 2026 and October 15, 2026 respectively.

## The numbers

| Metric | DDchat AI | Note Taking App |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[5.0 (1 ratings)](https://appshunter.io/ios/app/ddchat-ai/id6766894679/reviews)** | — |
| Number of ratings | **1** | — |
| Positive reviews | 87.5% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | **No** | Yes |
| Update frequency | Every 3 days | **Every 2 days** |
| Monetization | Paid | — |
| Size | 12 MB | 15 MB |
| Requires iOS | 26.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [俊华 乔](https://appshunter.io/developer/1896311102) | [Arima Jain](https://appshunter.io/developer/1679158070) |

## What reviewers say

### DDchat AI

[App page](https://appshunter.io/ios/app/ddchat-ai/id6766894679)

A native iOS AI chat client offering a polished and fluid user experience. It supports multiple AI models and protocols, with advanced features like visualized chain-of-thought and task-specific assistants. All data remains on your device for enhanced privacy.

**Highlights:** Native iOS feel with fluid animations, Supports Chat Completions and Anthropic protocols, Automatic model capability detection, Visualized chain-of-thought reasoning, Task-specific AI assistants, Inline HTML rendering with Markdown support, Privacy-first, zero data upload

**Features:** macOS Compatibility

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| DDchat Pro Lifetime (Offer) | $1.99 | one-time |
| DDchat Pro Lifetime | $9.99 | one-time |


### Note Taking App

[App page](https://appshunter.io/ios/app/note-taking-app-digital-notes/id6804133012)

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

**In-app purchases:** none


## Frequently asked questions

### Is DDchat AI free?

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

### Is Note Taking App free?

Note Taking App is free to download, with no in-app purchases.

### Do DDchat AI or Note Taking App have ads?

Note Taking App shows ads; DDchat AI does not.

### Which is updated more often, DDchat AI or Note Taking App?

DDchat AI ships an update every 3 days, and Note Taking App every 2 days. Most recently, DDchat AI was updated on October 17, 2026 and Note Taking App on October 15, 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.*