# pjrobot vs Scent Tech

The clearest difference is rating: Scent Tech at 2.2 against pjrobot's 1.5. Scent Tech also leads on update cadence (every 6 weeks vs every 13 months) and ratings volume (63 vs 2). pjrobot's advantage is iOS requirement (12.0 vs 15.0). On price, ads, in-app purchases and monetization model there is nothing between them.

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

Scent Tech holds the better App Store score, 2.2 against 1.5. That said, the two scores are not equally well evidenced: Scent Tech has 63 ratings behind it against 2, so its average is the more settled of the two. Written reviews point the same way: 0% of pjrobot's written reviews are positive against 14% of Scent Tech's.

pjrobot ships an update every 13 months, Scent Tech every 6 weeks. The most recent releases landed on October 4, 2026 and October 14, 2026 respectively.

## The numbers

| Metric | pjrobot | Scent Tech |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [1.5 (2 ratings)](https://appshunter.io/ios/app/pjrobot/id1635727214/reviews) | **[2.2 (63 ratings)](https://appshunter.io/ios/app/scent-tech/id1662466433/reviews)** |
| Number of ratings | 2 | **63** |
| Positive reviews | 0.0% of reviews | **13.6% of reviews** |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 13 months | **Every 6 weeks** |
| Monetization | Free | Free |
| Size | 183 MB | 47 MB |
| Requires iOS | **12.0** | 15.0 |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 4+ | 4+ |
| Developer | [Dongguan Pinjia Intelligence Technology Co.,Ltd](https://appshunter.io/developer/1635727516) | [俊 谢](https://appshunter.io/developer/1440271932) |

## What reviewers say

### pjrobot

[App page](https://appshunter.io/ios/app/pjrobot/id1635727214)

Control your smart home devices remotely with this app. It offers easy device setup, smart linkage for one-click control of multiple devices, and voice assistant integration for a convenient smart living experience.

**Highlights:** Remote device control, WIFI fast distribution network, Smart linkage for multiple devices, Voice assistant support, One-click device control

**Features:** macOS Compatibility

**In-app purchases:** none


### Scent Tech

[App page](https://appshunter.io/ios/app/scent-tech/id1662466433)

Control your scent machine remotely with this app. It offers automatic mode selection for various scenarios and allows for batch management of devices through customizable groups.

**Highlights:** Scent machine control, Automatic mode selection, Device grouping, Batch management, Customizable group names

**In-app purchases:** none


## Frequently asked questions

### Is pjrobot free?

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

### Is Scent Tech free?

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

### Which has better reviews, pjrobot or Scent Tech?

Scent Tech is rated higher. pjrobot averages 1.5 out of 5 from 2 ratings, while Scent Tech averages 2.2 from 63 ratings.

### Do pjrobot or Scent Tech have ads?

Neither pjrobot nor Scent Tech shows ads.

### Which is updated more often, pjrobot or Scent Tech?

pjrobot ships an update every 13 months, and Scent Tech every 6 weeks. Most recently, pjrobot was updated on October 4, 2026 and Scent Tech on October 14, 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.*