# Smart Scent Pro vs Infinitum Arc

The clearest difference is ads: Smart Scent Pro at none against Infinitum Arc's shown. Infinitum Arc's advantage is update cadence (every 2 days vs every 2 months). On price, in-app purchases, device support and iOS requirement 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, Infinitum Arc every 2 days. The most recent releases landed on October 15, 2026 and October 7, 2026 respectively.

## The numbers

| Metric | Smart Scent Pro | Infinitum Arc |
| --- | --- | --- |
| Price | Free | Free |
| In-app purchases | No | No |
| Ads | **No** | Yes |
| Update frequency | Every 2 months | **Every 2 days** |
| Size | 20 MB | 76 MB |
| Requires iOS | **15.0** | 15.6 |
| Devices | iPhone, iPod | **iPhone, iPad, iPod** |
| Age rating | 4+ | 4+ |
| Developer | [永锦 罗](https://appshunter.io/developer/1444842458) | [William Wilborn](https://appshunter.io/developer/1893476384) |

## What reviewers say

### Smart Scent Pro

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

**In-app purchases:** none


### Infinitum Arc

[App page](https://appshunter.io/ios/app/infinitum-arc/id6772662095)

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

**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 Infinitum Arc free?

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

### Do Smart Scent Pro or Infinitum Arc have ads?

Infinitum Arc shows ads; Smart Scent Pro does not.

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

Smart Scent Pro ships an update every 2 months, and Infinitum Arc every 2 days. Most recently, Smart Scent Pro was updated on October 15, 2026 and Infinitum Arc on October 7, 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.*