# BT vs Scent Master Pro

The clearest difference is review sentiment: Scent Master Pro at 100% against BT's 50%. Scent Master Pro also leads on rating (3.7 vs 1.6) and update cadence (fortnightly vs every 3 months). BT's advantage is iOS requirement (9.0 vs 13.0). On price, ratings volume, 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.

Scent Master Pro holds the better App Store score, 3.7 against 1.6. Both are backed by a comparable volume of ratings — 8 and 7 respectively. Written reviews point the same way: 50% of BT's written reviews are positive against 100% of Scent Master Pro's.

BT ships an update every 3 months, Scent Master Pro fortnightly. The most recent releases landed on October 10, 2026 and October 24, 2026 respectively.

## The numbers

| Metric | BT | Scent Master Pro |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.6 (8 ratings)](https://appshunter.io/ios/app/bt-aroma/id1601150083/reviews) | **[3.7 (7 ratings)](https://appshunter.io/ios/app/scent-master-pro/id6499073832/reviews)** |
| Number of ratings | **8** | 7 |
| Positive reviews | 50.0% of reviews | **100.0% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 3 months | **Fortnightly** |
| Monetization | Free | Free |
| Size | 3 MB | 180 MB |
| Requires iOS | **9.0** | 13.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [俊 谢](https://appshunter.io/developer/1440271932) | [兵 姚](https://appshunter.io/developer/1546606210) |

## What reviewers say

### BT

[App page](https://appshunter.io/ios/app/bt-aroma/id1601150083)

This utility app allows users to customize working periods for a machine. It supports setting different working days and times for various requests and locations, offering flexibility in machine operation.

**Highlights:** Customizable working modes, Set 5 groups of working periods, Define different working days, Schedule specific working times, Adaptable to various requests and locations

**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 BT free?

BT 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.

### Which has better reviews, BT or Scent Master Pro?

Scent Master Pro is rated higher. BT averages 1.6 out of 5 from 8 ratings, while Scent Master Pro averages 3.7 from 7 ratings.

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

Neither BT nor Scent Master Pro shows ads.

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

BT ships an update every 3 months, and Scent Master Pro fortnightly. Most recently, BT was updated on October 10, 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.*