Comparison

Leafscan vs Link4 Cloud

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

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.

Highlights
  • Measure leaf surface area
  • Log and export measurements
  • Measure multiple leaves per photo
  • Import photos from library
  • Automatic angle correction
  • Customizable units and thresholds
Features
Read full description

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.

About

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.

Highlights
  • Real-time alarm notifications
  • Sensor readings access
  • Configuration changes
  • Crop information access
  • Grow Journal Notes and Tasks
Read full description

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

Leafscan4 screens
Link4 Cloud4 screens

Verdict

The call

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

CostPrice · In-app purchases · Ads · Monetization

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.

ReceptionRating · Positive reviews · Number of ratings

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.

UpkeepUpdate frequency

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.

Scorecard5 real differences · 5 level
Leafscan versus Link4 Cloud: the parameters behind the verdict, then further details
ParameterLeafscanLink4 Cloud
Price$19.99Free — better
Rating5.0 (6 ratings)5.0 (2 ratings)
Positive reviews100.0% of reviews—
Number of ratings6 — better2
Update frequencyEvery 104 monthsEvery 6 months — better
AdsNoNo
In-app purchasesNoNo
MonetizationPaidFree — better
DevicesiPhone, iPad, iPodiPhone, iPad, iPod
Requires iOS15.612.0 — better
Further details — not scored
Size46 MB11 MB
Age rating4+17+
DeveloperCarlos AndersonLink4 Corporation

Customer experience

Leafscan

All ratings6 ratings
Positive100.0%
Neutral0.0%
Negative0.0%
Written reviews3 reviews
Positive100.0%
Neutral0.0%
Negative0.0%

Link4 Cloud

All ratings2 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Leafscan

No in-app purchases

None

Link4 Cloud

No in-app purchases

Questions

Is Leafscan free?
Leafscan costs $19.99, with no in-app purchases.
Is Link4 Cloud free?
Link4 Cloud is free to download, with no in-app purchases.
Which has better reviews, Leafscan or Link4 Cloud?
Leafscan and Link4 Cloud are both rated 5.0 out of 5 on the App Store, from 6 and 2 ratings respectively.
Do Leafscan or Link4 Cloud have ads?
Neither Leafscan nor Link4 Cloud shows ads.
Which is updated more often, Leafscan or Link4 Cloud?
Leafscan ships an update every 104 months, and Link4 Cloud every 6 months. Most recently, Leafscan was updated on September 22, 2026 and Link4 Cloud on September 19, 2026.

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