# HJM vs SULION IoT

The clearest difference is update cadence: HJM at every 3 months against SULION IoT's every 13 months. SULION IoT's advantage is iOS requirement (13.0 vs 15.0). On price, review sentiment, 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.

HJM ships an update every 3 months, SULION IoT every 13 months. The most recent releases landed on November 2, 2026 and November 3, 2026 respectively.

## The numbers

| Metric | HJM | SULION IoT |
| --- | --- | --- |
| Price | Free | Free |
| Rating | — | **[4.7 (6 ratings)](https://appshunter.io/ios/app/sulion-iot/id1465073669/reviews)** |
| Number of ratings | — | **6** |
| Positive reviews | **42.9% of reviews** | 41.7% of reviews |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 3 months** | Every 13 months |
| Monetization | Free | Free |
| Size | 30 MB | 198 MB |
| Requires iOS | 15.0 | **13.0** |
| Devices | **iPhone, iPad, iPod** | iPhone, iPod |
| Age rating | 4+ | 12+ |
| Developer | [Hermanos Julian M S.L.](https://appshunter.io/developer/1367547773) | [Lamparas Schuller SA](https://appshunter.io/developer/1465073668) |

## What reviewers say

### HJM

[App page](https://appshunter.io/ios/app/hjm/id1367547774)

Manage your smart radiator temperatures easily and quickly from your smartphone. Adjust heating remotely without being at home, ensuring comfort and efficiency.

**Highlights:** Remote temperature management, Smart radiator control, Easy and quick adjustments, Smartphone access, Energy efficiency

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### SULION IoT

[App page](https://appshunter.io/ios/app/sulion-iot/id1465073669)

Control everyday electrical products remotely using your smartphone. Convert standard devices into smart ones with built-in Wi-Fi, and integrate with voice assistants like Alexa and Google Home for seamless interaction.

**Highlights:** Remote device control via smartphone, No hub or gateway required, Built-in Wi-Fi antenna, Voice control with Amazon Alexa/Google Home, Configure all devices in one app, Schedule device operation

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is HJM free?

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

### Is SULION IoT free?

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

### Do HJM or SULION IoT have ads?

Neither HJM nor SULION IoT shows ads.

### Which is updated more often, HJM or SULION IoT?

HJM ships an update every 3 months, and SULION IoT every 13 months. Most recently, HJM was updated on November 2, 2026 and SULION IoT on November 3, 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.*