SOLUS by AROYA vs Link4 Cloud
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SOLUS by AROYA
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.
- High-precision substrate readings
- Water content measurement
- Temperature monitoring
- Electrical conductivity analysis
- Unlimited spot readings
- Crop potential maximization
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Gain deeper insight into the world beneath your substrate’s surface – and unlock maximum crop potential. The SOLUS app paired with the SOLUS Sensor Kit enables you to collect high-precision spot readings of your substrate water content, temperature and electrical conductivity. No subscriptions or fees – if you have the SOLUS Sensor Kit, this app will help you take all the spot readings you can handle. Don’t have the sensor kit yet? Snag one at RF Agriculture or AROYA.io. When you’re ready to maximize more than your substrate, dive into the ever-evolving family of AROYA sensors and cultivation analysis tools at AROYA.io.
Link4 Cloud
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.
- Real-time alarm notifications
- Sensor readings access
- Configuration changes
- Crop information access
- Grow Journal Notes and Tasks
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Access your Link4 iGrow 1800 and Pearl environmental controllers anywhere you go with the Link4 Cloud App. This App does not work for the Link4 iPonic, iGrow 800, and Sapphire environmental controllers (to access these controllers go to this web address: https://link4cloud.com/). Using the Link4 Cloud with your iGrow 1800 and Pearl environmental controllers you can receive real-time alarm notifications, get sensor readings, make configuration changes, access critical crop information, and enter Grow Journal Notes and Tasks. The Link4 Cloud allows you to always be linked to your grow operation, no matter where you are in the world.
Screenshots
Verdict
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.
Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS
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.
| Parameter | SOLUS by AROYA | Link4 Cloud |
|---|---|---|
| Price | Free | Free |
| Rating | 3.0 (4 ratings) | 5.0 (2 ratings) — better |
| Positive reviews | 0.0% of reviews | — |
| Number of ratings | 4 — better | 2 |
| Update frequency | Every 5 weeks — better | Every 6 months |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 12.0 | 12.0 |
| Further details — not scored | ||
| Size | 25 MB | 11 MB |
| Age rating | 4+ | 17+ |
| Developer | Addium Inc | Link4 Corporation |
Customer experience
SOLUS by AROYA
Link4 Cloud
In-app purchases
SOLUS by AROYA
No in-app purchases
Link4 Cloud
No in-app purchases
