SlashScan vs TreeMeasure Pro
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
SlashScan
This app uses LiDAR on compatible iPads to scan and estimate the volume of forest slash piles in real-time. It generates 3D models and allows for offline processing, making it ideal for forestry operations and research in remote areas.
- Real-time 3D scanning with LiDAR
- Automated 3D mesh reconstruction
- Accurate volume estimation
- Integrated mapping with GNSS tagging
- Offline processing capability
- Forest biomass inventory
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SlashScan is an iOS application for real-time estimation and mapping of forest slash-pile volumes using the built-in LiDAR sensor of iPad Pro devices. Developed through research at Oregon State University’s College of Forestry, SlashScan provides an accurate, portable, and field-ready solution for forestry operations, biomass inventory, and research applications. ■ Key Features Real-time 3D Scanning: Capture detailed point clouds of slash piles using the iPad’s LiDAR sensor. Automated Mesh Reconstruction: Generate precise 3D models optimized for irregular pile geometries. Accurate Volume Estimation: Instantly compute pile volume and export results for analysis or reporting. Integrated Mapping: GNSS tagging and satellite map view allow users to visualize and manage multiple pile locations. Offline Capability: All processing—scanning, reconstruction, and volume computation—occurs locally, enabling use in remote forest sites without internet access. ■ Applications SlashScan supports operational and research applications such as: Forest biomass and slash-pile inventory Post-harvest residue and fuel-load management Validation of UAV-LiDAR and photogrammetric surveys Educational demonstrations in forest engineering and remote sensing ■ Supported Devices SlashScan requires a LiDAR-equipped iOS device. Fully Supported Models: iPhone 12-17 Pro iPhone 12-17 Pro Max iPad Pro 13-inch (M4) iPad Pro 12.9-inch (5th & 6th Gen, M1/M2) iPad Pro 11-inch (3rd & 4th Gen, M1/M2)
TreeMeasure Pro
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Tree Measure Pro is a professional forestry measurement app powered by augmented reality and LiDAR technology. Measure tree diameters, heights and volumes, and conduct Bitterlich angle counts directly in the field using your iPhone camera. No additional equipment needed. FEATURES: • AR Inventory — tree diameter, height and volume with LiDAR precision • Sample Plots — fixed area plot measurements with automatic calculations • Tree Heights — AR-based height measurement • Tree Crown — crown height, base and width in AR • Circumference — for trunks too wide for calipers: place a marker and walk around the tree • Round Logs — volume of felled timber, Smalian or Huber formula • Bitterlich — basal area angle count method • Clinometer — terrain slope measurement • Records — save, view and manage all your measurements • Map — visualize all measured trees on an interactive map • Export — CSV, GeoJSON and PDF reports for office use • iCloud sync — records shared between your iPhone and iPad (optional) • Apple Watch — trigger a measurement from your wrist • Shortcuts & Action button — open any module with a single press • Metric and US units — cm/m or inches/feet, with US volume equations • Works on any iPhone — LiDAR improves precision but is not required • Works offline — no internet connection required in the field Free tier includes 10 measurements per module. Subscribe to TreeMeasure Pro for unlimited access to all features. Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/
Screenshots
Verdict
The clearest difference is in-app purchases: SlashScan at none against TreeMeasure Pro's 2. SlashScan also leads on iOS requirement (16.6 vs 26.0). TreeMeasure Pro's advantage is update cadence (every 3 days vs every 6 months). On price, ads 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
Both are free to download. TreeMeasure Pro sells 2 in-app purchases, starting at $3.99 per month. SlashScan asks for nothing beyond the download.
SlashScan ships an update every 6 months, TreeMeasure Pro every 3 days. The most recent releases landed on October 2, 2026 and October 19, 2026 respectively.
| Parameter | SlashScan | TreeMeasure Pro |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (2 ratings) — better | — |
| Number of ratings | 2 — better | — |
| Update frequency | Every 6 months | Every 3 days — better |
| Ads | No | No |
| In-app purchases | No — better | Yes |
| Monetization | Free | — |
| Devices | iPhone, iPad | iPhone, iPad, Apple Watch — better |
| Requires iOS | 16.6 — better | 26.0 |
| Further details — not scored | ||
| Size | 16 MB | 12 MB |
| Age rating | 4+ | 4+ |
| Developer | Heesung Woo | Florin Nicola |
In-app purchases
SlashScan
No in-app purchases
TreeMeasure Pro
- TreeMeasure Pro Monthly$3.991 Month
- TreeMeasure Pro Yearly$39.991 Year









