# Smart Scent Pro vs Scent3

The clearest difference is update cadence: Scent3 at every 4 weeks against Smart Scent Pro's every 2 months. Scent3 also leads on iOS requirement (9.0 vs 15.0). 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.

Smart Scent Pro ships an update every 2 months, Scent3 every 4 weeks. The most recent releases landed on October 15, 2026 and October 4, 2026 respectively.

## The numbers

| Metric | Smart Scent Pro | Scent3 |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 2 months | **Every 4 weeks** |
| Size | 20 MB | 50 MB |
| Requires iOS | 15.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [永锦 罗](https://appshunter.io/developer/1444842458) | [mohammed z sunbil](https://appshunter.io/developer/1659357298) |

## What reviewers say

### Smart Scent Pro

[App page](https://appshunter.io/ios/app/smart-scent-pro/id1558962248)

**In-app purchases:** none


### Scent3

[App page](https://appshunter.io/ios/app/scent3/id6478255965)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Smart Scent Pro free?

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

### Is Scent3 free?

Scent3 is free to download, with no in-app purchases.

### Do Smart Scent Pro or Scent3 have ads?

Neither Smart Scent Pro nor Scent3 shows ads.

### Which is updated more often, Smart Scent Pro or Scent3?

Smart Scent Pro ships an update every 2 months, and Scent3 every 4 weeks. Most recently, Smart Scent Pro was updated on October 15, 2026 and Scent3 on October 4, 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.*