# SEMICOM SMART vs J

The clearest difference is update cadence: J at every 5 weeks against SEMICOM SMART's every 7 months. J also leads on rating (5.0 vs 4.8) and iOS requirement (9.0 vs 14.0). SEMICOM SMART's advantage is ratings volume (19 vs 1). 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.

J holds the better App Store score, 5.0 against 4.8. That said, the two scores are not equally well evidenced: SEMICOM SMART has 19 ratings behind it against 1, so its average is the more settled of the two.

SEMICOM SMART ships an update every 7 months, J every 5 weeks. The most recent releases landed on September 10, 2026 and June 2, 2026 respectively.

## The numbers

| Metric | SEMICOM SMART | J |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [4.8 (19 ratings)](https://appshunter.io/ios/app/semicom-smart/id1539909352/reviews) | **[5.0 (1 ratings)](https://appshunter.io/ios/app/j-smell/id6450985801/reviews)** |
| Number of ratings | **19** | 1 |
| Positive reviews | — | 100.0% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | Every 7 months | **Every 5 weeks** |
| Monetization | Free | Free |
| Size | 205 MB | 20 MB |
| Requires iOS | 14.0 | **9.0** |
| Devices | iPhone, iPod | iPhone, iPod |
| Age rating | 12+ | 4+ |
| Developer | [Semicom Lexis Ltd.](https://appshunter.io/developer/1539909354) | [Johnson clean ltd](https://appshunter.io/developer/1696078547) |

## What reviewers say

### SEMICOM SMART

[App page](https://appshunter.io/ios/app/semicom-smart/id1539909352)

Control and monitor your smart home devices from one place. Schedule automatic on/off times and create custom scenarios for convenience. This easy-to-use application supports multiple users.

**Highlights:** Remote control of smart home products, Real-time monitoring, Automatic shut-off/on scheduling, Scenario creation, Multi-user support, Easy operation

**Features:** macOS Compatibility

**In-app purchases:** none


### J

[App page](https://appshunter.io/ios/app/j-smell/id6450985801)

Enhance your environment with pleasant scents. This application helps you create and manage atmospheric perfuming for any space. Enjoy a curated selection of fragrances to suit your mood and preferences.

**Highlights:** Atmospheric perfuming, Scent management, Fragrance selection, Mood enhancement

**In-app purchases:** none


## Frequently asked questions

### Is SEMICOM SMART free?

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

### Is J free?

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

### Which has better reviews, SEMICOM SMART or J?

J is rated higher. SEMICOM SMART averages 4.8 out of 5 from 19 ratings, while J averages 5.0 from 1 ratings.

### Do SEMICOM SMART or J have ads?

Neither SEMICOM SMART nor J shows ads.

### Which is updated more often, SEMICOM SMART or J?

SEMICOM SMART ships an update every 7 months, and J every 5 weeks. Most recently, SEMICOM SMART was updated on September 10, 2026 and J on June 2, 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.*