# Scent Expert vs 行者AI

The clearest difference is update cadence: 行者AI at daily against Scent Expert's every 6 months. Scent Expert's advantage is iOS requirement (13.0 vs 18.0). On price, ads, in-app purchases and device support there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Scent Expert ships an update every 6 months, 行者AI daily. Both last shipped on September 29, 2026.

## The numbers

| Metric | Scent Expert | 行者AI |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Daily** |
| Size | 182 MB | 3 MB |
| Requires iOS | **13.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [静康 麦](https://appshunter.io/developer/1709029897) | [东海 李](https://appshunter.io/developer/1144318243) |

## What reviewers say

### Scent Expert

[App page](https://appshunter.io/ios/app/scent-expert/id6477283518)

**Features:** macOS Compatibility

**In-app purchases:** none


### 行者AI

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

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

**In-app purchases:** none


## Frequently asked questions

### Is Scent Expert free?

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

### Is 行者AI free?

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

### Do Scent Expert or 行者AI have ads?

Neither Scent Expert nor 行者AI shows ads.

### Which is updated more often, Scent Expert or 行者AI?

Scent Expert ships an update every 6 months, and 行者AI daily. Most recently, Scent Expert was updated on September 29, 2026 and 行者AI on September 29, 2026.

---

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