# 行者AI vs PDF Scanner Assistant

The clearest difference is price: 行者AI at Free against PDF Scanner Assistant's $0.99. 行者AI also leads on update cadence (daily vs monthly). PDF Scanner Assistant's advantage is iOS requirement (16.6 vs 18.0). On ads, in-app purchases and device support there is nothing between them.

行者AI is free to download; PDF Scanner Assistant costs $0.99 up front. Neither carries in-app purchases, so what you see is what you pay.

行者AI ships an update daily, PDF Scanner Assistant monthly. The most recent releases landed on October 28, 2026 and October 25, 2026 respectively.

## The numbers

| Metric | 行者AI | PDF Scanner Assistant |
| --- | --- | --- |
| Price | **Free** | $0.99 |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Daily** | Monthly |
| Size | 3 MB | 9 MB |
| Requires iOS | 18.0 | **16.6** |
| Devices | iPhone | **iPhone, iPad** |
| Age rating | 4+ | 4+ |
| Developer | [东海 李](https://appshunter.io/developer/1144318243) | [乐祥 胡](https://appshunter.io/developer/1572365721) |

## What reviewers say

### 行者AI

[App page](https://appshunter.io/ios/app/ai/id6746710025)

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

**In-app purchases:** none


### PDF Scanner Assistant

[App page](https://appshunter.io/ios/app/pdf-scanner-assistant/id6747924395)

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

**In-app purchases:** none


## Frequently asked questions

### Is 行者AI free?

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

### Is PDF Scanner Assistant free?

PDF Scanner Assistant costs $0.99, with no in-app purchases.

### Do 行者AI or PDF Scanner Assistant have ads?

Neither 行者AI nor PDF Scanner Assistant shows ads.

### Which is updated more often, 行者AI or PDF Scanner Assistant?

行者AI ships an update daily, and PDF Scanner Assistant monthly. Most recently, 行者AI was updated on October 28, 2026 and PDF Scanner Assistant on October 25, 2026.

---

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