Leafscan vs Link4 Cloud
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Leafscan
Instantly measure leaf surface area using your phone's camera. Log and export measurements as a CSV file. Requires a white background with reference markers for accurate results.
- Measure leaf surface area
- Log and export measurements
- Measure multiple leaves per photo
- Import photos from library
- Automatic angle correction
- Customizable units and thresholds
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Leafscan is a leaf area meter in your pocket! Use your mobile device to take a picture of a leaf and instantly get its area. Keep track of your measurements in a notebook and export it as a CSV file via AirDrop, email, and more. You’ll only need a white background with reference markers, which you can make yourself or download free from our website (http://www.leafscanapp.com). Features: - Measure leaf surface area with high accuracy - Log your measurements and export them as a CSV file - Measure multiple leaves in one photo at once - Take pictures using the camera or load them from the photos library - Holes, tears, and missing tissue can be excluded from the total area - Automatically correct for photos taken at an angle - Customize the measurement units (mm, cm, or in) - Customize the reference length and detection thresholds Some of the icons in this app were provided by https://icons8.com.
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 price: Link4 Cloud at Free against Leafscan's $19.99. Link4 Cloud also leads on update cadence (every 6 months vs every 104 months) and iOS requirement (12.0 vs 15.6). Leafscan's advantage is ratings volume (6 vs 2). On rating, ads, in-app purchases and device support 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
Link4 Cloud is free to download; Leafscan costs $19.99 up front. Neither carries in-app purchases, so what you see is what you pay.
On the App Store both sit at effectively the same score — 5.0 for Leafscan against 5.0 for Link4 Cloud. Both are backed by a comparable volume of ratings — 6 and 2 respectively.
Leafscan ships an update every 104 months, Link4 Cloud every 6 months. The most recent releases landed on September 22, 2026 and September 19, 2026 respectively.
| Parameter | Leafscan | Link4 Cloud |
|---|---|---|
| Price | $19.99 | Free — better |
| Rating | 5.0 (6 ratings) | 5.0 (2 ratings) |
| Positive reviews | 100.0% of reviews | — |
| Number of ratings | 6 — better | 2 |
| Update frequency | Every 104 months | Every 6 months — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Paid | Free — better |
| Devices | iPhone, iPad, iPod | iPhone, iPad, iPod |
| Requires iOS | 15.6 | 12.0 — better |
| Further details — not scored | ||
| Size | 46 MB | 11 MB |
| Age rating | 4+ | 17+ |
| Developer | Carlos Anderson | Link4 Corporation |
Customer experience
Leafscan
Link4 Cloud
In-app purchases
Leafscan
No in-app purchases
Link4 Cloud
No in-app purchases









