# SOLUS by AROYA vs Link4 Cloud

The clearest difference is rating: Link4 Cloud at 5.0 against SOLUS by AROYA's 3.0. SOLUS by AROYA's advantage is update cadence (every 5 weeks vs every 6 months). 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.

Link4 Cloud holds the better App Store score, 5.0 against 3.0. Both are backed by a comparable volume of ratings — 4 and 2 respectively.

SOLUS by AROYA ships an update every 5 weeks, Link4 Cloud every 6 months. The most recent releases landed on September 5, 2026 and September 19, 2026 respectively.

## The numbers

| Metric | SOLUS by AROYA | Link4 Cloud |
| --- | --- | --- |
| Price | Free | Free |
| Rating | [3.0 (4 ratings)](https://appshunter.io/ios/app/solus-by-aroya/id1541736036/reviews) | **[5.0 (2 ratings)](https://appshunter.io/ios/app/link4-cloud/id1586175290/reviews)** |
| Number of ratings | **4** | 2 |
| Positive reviews | 0.0% of reviews | — |
| In-app purchases | No | No |
| Ads | No | No |
| Update frequency | **Every 5 weeks** | Every 6 months |
| Monetization | Free | Free |
| Size | 25 MB | 11 MB |
| Requires iOS | 12.0 | 12.0 |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Age rating | 4+ | 17+ |
| Developer | [Addium Inc](https://appshunter.io/developer/1720794773) | [Link4 Corporation](https://appshunter.io/developer/381382009) |

## What reviewers say

### SOLUS by AROYA

[App page](https://appshunter.io/ios/app/solus-by-aroya/id1541736036)

This app, when paired with a sensor kit, provides high-precision readings of substrate water content, temperature, and electrical conductivity. Unlock your crop's full potential by gaining deeper insights into the soil beneath. It offers unlimited spot readings without additional fees.

**Highlights:** High-precision substrate readings, Water content measurement, Temperature monitoring, Electrical conductivity analysis, Unlimited spot readings, Crop potential maximization

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

**In-app purchases:** none


### Link4 Cloud

[App page](https://appshunter.io/ios/app/link4-cloud/id1586175290)

Monitor and control your Link4 iGrow 1800 and Pearl environmental controllers remotely. Receive real-time alerts, view sensor data, and make configuration changes from anywhere in the world. Log notes and tasks for your grow operation.

**Highlights:** Real-time alarm notifications, Sensor readings access, Configuration changes, Crop information access, Grow Journal Notes and Tasks

**In-app purchases:** none


## Frequently asked questions

### Is SOLUS by AROYA free?

SOLUS by AROYA is free to download, with no in-app purchases.

### Is Link4 Cloud free?

Link4 Cloud is free to download, with no in-app purchases.

### Which has better reviews, SOLUS by AROYA or Link4 Cloud?

Link4 Cloud is rated higher. SOLUS by AROYA averages 3.0 out of 5 from 4 ratings, while Link4 Cloud averages 5.0 from 2 ratings.

### Do SOLUS by AROYA or Link4 Cloud have ads?

Neither SOLUS by AROYA nor Link4 Cloud shows ads.

### Which is updated more often, SOLUS by AROYA or Link4 Cloud?

SOLUS by AROYA ships an update every 5 weeks, and Link4 Cloud every 6 months. Most recently, SOLUS by AROYA was updated on September 5, 2026 and Link4 Cloud on September 19, 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.*