# Scent Machine vs Print Guardian

The clearest difference is update cadence: Print Guardian at every 3 weeks against Scent Machine's every 5 months. Scent Machine's advantage is iOS requirement (9.0 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 Machine ships an update every 5 months, Print Guardian every 3 weeks. The most recent releases landed on October 16, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Scent Machine | Print Guardian |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/print-guardian/id6765746664/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 5 months | **Every 3 weeks** |
| Monetization | — | Free |
| Size | 26 MB | 11 MB |
| Requires iOS | **9.0** | 18.0 |
| Devices | **iPhone, iPod** | iPhone |
| Age rating | 4+ | 4+ |
| Developer | [Guangzhou Lanmei Computer Technology Co., Ltd.](https://appshunter.io/developer/989104097) | [Cuart Studios Inc.](https://appshunter.io/developer/1896057204) |

## What reviewers say

### Scent Machine

[App page](https://appshunter.io/ios/app/scent-machine/id6740234000)

**Features:** macOS Compatibility

**In-app purchases:** none


### Print Guardian

[App page](https://appshunter.io/ios/app/print-guardian/id6765746664)

Remotely monitor and manage your printer's maintenance with smart alerts and cleaning controls. Designed for DTF workflows, it helps prevent clogs and protect critical components, ensuring reliable operation.

**Highlights:** Remote printer status monitoring, Maintenance alerts and notifications, Trigger cleaning cycles remotely, Real-time activity and readiness updates, Simple gateway setup, DTF workflow optimization

**In-app purchases:** none


## Frequently asked questions

### Is Scent Machine free?

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

### Is Print Guardian free?

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

### Do Scent Machine or Print Guardian have ads?

Neither Scent Machine nor Print Guardian shows ads.

### Which is updated more often, Scent Machine or Print Guardian?

Scent Machine ships an update every 5 months, and Print Guardian every 3 weeks. Most recently, Scent Machine was updated on October 16, 2026 and Print Guardian on October 24, 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.*