# RAK QMS vs ScentSense

The clearest difference is update cadence: ScentSense at monthly against RAK QMS's every 6 months. RAK QMS's advantage is iOS requirement (7.0 vs 11.0). 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.

RAK QMS ships an update every 6 months, ScentSense monthly. The most recent releases landed on November 11, 2026 and November 4, 2026 respectively.

## The numbers

| Metric | RAK QMS | ScentSense |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[5.0 (1 ratings)](https://appshunter.io/ios/app/scentsense/id6478196334/reviews)** |
| Number of ratings | — | **1** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 6 months | **Monthly** |
| Monetization | — | Free |
| Size | 3 MB | 157 MB |
| Requires iOS | **7.0** | 11.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Electronic Government Authority (EGA)](https://appshunter.io/developer/536193834) | [惠玉 王](https://appshunter.io/developer/1721372160) |

## What reviewers say

### RAK QMS

[App page](https://appshunter.io/ios/app/rak-qms/id1114503017)

**Features:** macOS Compatibility

**In-app purchases:** none


### ScentSense

[App page](https://appshunter.io/ios/app/scentsense/id6478196334)

This application allows users to remotely monitor and control fragrance machines. It can detect remaining fragrance oil levels and manage multiple machines via Wi-Fi, offering batch control based on various criteria like project or region. Users can contact the developer with any inquiries.

**Highlights:** Monitor fragrance oil levels, Wi-Fi dual-mode connection, Remote machine control, Batch control by project, region, user, Background machine management

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is RAK QMS free?

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

### Is ScentSense free?

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

### Do RAK QMS or ScentSense have ads?

Neither RAK QMS nor ScentSense shows ads.

### Which is updated more often, RAK QMS or ScentSense?

RAK QMS ships an update every 6 months, and ScentSense monthly. Most recently, RAK QMS was updated on November 11, 2026 and ScentSense on November 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.*