# Residents24 vs Scent Master Pro

The clearest difference is iOS requirement: Scent Master Pro at 13.0 against Residents24's 16.2. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

Residents24 ships an update every 4 weeks, Scent Master Pro fortnightly. The most recent releases landed on October 9, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | Residents24 | Scent Master Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[3.7 (7 ratings)](https://appshunter.io/ios/app/scent-master-pro/id6499073832/reviews)** |
| Number of ratings | — | **7** |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 4 weeks | **Fortnightly** |
| Monetization | — | Free |
| Size | 27 MB | 180 MB |
| Requires iOS | 16.2 | **13.0** |
| Devices | iPhone | **iPhone, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [CyberProgs Inc](https://appshunter.io/developer/1700027595) | [兵 姚](https://appshunter.io/developer/1546606210) |

## What reviewers say

### Residents24

[App page](https://appshunter.io/ios/app/residents24/id6455461549)

**Features:** macOS Compatibility

**In-app purchases:** none


### Scent Master Pro

[App page](https://appshunter.io/ios/app/scent-master-pro/id6499073832)

This intelligent fragrance management app allows real-time monitoring and remote control of connected devices. Users can customize working modes, set schedules, and track oil levels for a seamless experience.

**Highlights:** Remote device control, Custom working modes, Real-time oil level monitoring, Intelligent usage calibration, Device sharing management, Scheduled operation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is Residents24 free?

Residents24 is free to download, with no in-app purchases.

### Is Scent Master Pro free?

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

### Do Residents24 or Scent Master Pro have ads?

Neither Residents24 nor Scent Master Pro shows ads.

### Which is updated more often, Residents24 or Scent Master Pro?

Residents24 ships an update every 4 weeks, and Scent Master Pro fortnightly. Most recently, Residents24 was updated on October 9, 2026 and Scent Master Pro 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.*