# ScentSmart vs Scent Machine

The clearest difference is update cadence: Scent Machine at every 9 days against ScentSmart's every 4 months. 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.

ScentSmart ships an update every 4 months, Scent Machine every 9 days. The most recent releases landed on August 26, 2026 and September 13, 2026 respectively.

## The numbers

| Metric | ScentSmart | Scent Machine |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 months | **Every 9 days** |
| Size | 59 MB | 54 MB |
| Requires iOS | **12.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 17+ |
| Developer | [杭州隐迹环境科技有限公司](https://appshunter.io/developer/1611705274) | [春荣 杨](https://appshunter.io/developer/1677484703) |

## What reviewers say

### ScentSmart

[App page](https://appshunter.io/ios/app/scentsmart/id1611705272)

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

**In-app purchases:** none


### Scent Machine

[App page](https://appshunter.io/ios/app/scent-machine/id6446355637)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is ScentSmart free?

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

### Is Scent Machine free?

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

### Do ScentSmart or Scent Machine have ads?

Neither ScentSmart nor Scent Machine shows ads.

### Which is updated more often, ScentSmart or Scent Machine?

ScentSmart ships an update every 4 months, and Scent Machine every 9 days. Most recently, ScentSmart was updated on August 26, 2026 and Scent Machine on September 13, 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.*