# A vs Duluu

The clearest difference is in-app purchases: Duluu at none against A's 2. Duluu also leads on device support (3 vs 1) and iOS requirement (15.0 vs 17.2). On price, update cadence and ads there is nothing between them.

Both are free to download. A sells 2 in-app purchases, starting at $99.99 per month. Duluu asks for nothing beyond the download.

A ships an update every 2 weeks, Duluu every 9 days. Both last shipped on September 22, 2026.

## The numbers

| Metric | A | Duluu |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.5 (18 ratings)](https://appshunter.io/ios/app/a-pen/id1434492280/reviews)** | — |
| Number of ratings | **18** | — |
| Positive reviews | 38.0% of reviews | — |
| In-app purchases | Yes | **No** |
| Ads | No | No |
| Update frequency | Every 2 weeks | **Every 9 days** |
| Monetization | Freemium | — |
| Size | 58 MB | 107 MB |
| Requires iOS | 17.2 | **15.0** |
| Devices | iPhone | **iPhone, iPad, iPod** |
| Age rating | 12+ | 17+ |
| Developer | [Penpeer Ltd.](https://appshunter.io/developer/1711839113) | [Wei-Jr Lai](https://appshunter.io/developer/1676422232) |

## What reviewers say

### A

[App page](https://appshunter.io/ios/app/a-pen/id1434492280)

This platform connects doctors in Taiwan for professional networking, job opportunities, and knowledge sharing. It offers AI-powered journal summaries, curated lectures, and allows for both real-name and anonymous interactions. Users can complete weekly tasks to earn rewards and stay updated on industry news.

**Highlights:** Doctor recruitment and networking hub, AI-generated medical journal summaries, Online and in-person physician lectures, Real-name or anonymous interaction, Weekly missions for rewards, Industry news and career advice

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

**In-app purchases (2)**

| Purchase | Price | Billing |
| --- | --- | --- |
| A-Pen 徵才功能訂閱制（月） | $99.99 | per month |
| A-Pen 徵才功能訂閱制（月） | $99.99 | per month |


### Duluu

[App page](https://appshunter.io/ios/app/duluu/id6463662378)

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

**In-app purchases:** none


## Frequently asked questions

### Is A free?

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

### Is Duluu free?

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

### Do A or Duluu have ads?

Neither A nor Duluu shows ads.

### Which is updated more often, A or Duluu?

A ships an update every 2 weeks, and Duluu every 9 days. Most recently, A was updated on September 22, 2026 and Duluu on September 22, 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.*