Stray Scanner vs ēVision
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Stray Scanner
Capture color, depth, and IMU data using your device's LiDAR sensor. Export these datasets to your computer for machine learning and dense mapping projects. Streamline the process of collecting RGB-D data without complex calibration.
- Record color images
- Capture depth frames
- Export IMU measurements
- Estimate camera position
- Access camera calibration matrix
- Transfer datasets to desktop
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Note: requires a device with LiDAR. The iPad Pro, iPhone 12 Pro or iPhone 12 Pro Max currently have LiDAR sensors on them. Stray Scanner allows you to record color, depth and IMU datasets and export them to your desktop computer. For machine learning and dense mapping applications, you need a dataset to work with. Stray Scanner allows you to collect RGB-D datasets with your iPhone. The recorded datasets contain: - color images - depth frames from the LiDAR sensor - depth confidence maps - camera position estimates for each frame - camera calibration matrix - IMU measurements Once recorded, the datasets can easily be moved to your desktop computer by connecting your device with a Lightning cable and accessing the files through Finder. Put your iPhone's LiDAR scanner to good use. No more fumbling around calibrating and configuring depth sensors. Shoot datasets straight from your iPhone.
ēVision
This tool uses AI and computer vision to identify, assess, and measure structural steel elements on-site. It helps generate data for reuse, streamlining workflows for engineers and contractors in the construction industry.
- AI-powered structural element identification
- Real-time measurement and quantification
- Condition and defect assessment
- Generation of reuse-ready digital data
- Seamless data syncing with ēfestos.ai platform
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ēVision is the field intelligence layer of ēfestos.ai, designed to transform how structural steel is identified, assessed, and reused. Using advanced computer vision and AI, ēVision enables engineers, contractors, and asset owners to scan steel elements directly on-site, automatically detect structural components, and extract critical data such as geometry, condition, and connections. Move beyond manual surveys, spreadsheets, and uncertainty. With ēVision, you can: • Identify structural elements instantly Detect beams, columns, connections, and components using AI-powered image recognition. • Measure and quantify in real time Capture dimensions, profiles, and key properties directly from images or scans. • Assess condition and defects Detect corrosion, damage, and surface conditions to inform reuse decisions. • Generate reuse-ready data Convert site observations into structured digital inventories linked to ēfestos.ai. • Bridge field to platform Seamlessly sync data with ēMaps, ēDesign, and ēAnalytics for full lifecycle reuse workflows. Built for the circular construction era ēVision enables a new workflow: scan → understand → reuse Turning existing structures into measurable, valuable, and reusable assets. Why it matters Reusing steel can save up to ~1.5 tonnes of CO₂ per tonne. ēVision makes this scalable by unlocking reliable, data-driven decision-making in the field. Professional-grade performance Designed for engineers and industry professionals, ēVision integrates advanced AI models with practical workflows used in real projects. ēVision is not just a scanning tool. It is the first step toward turning buildings into data, and data into reusable value.
Screenshots
Verdict
The clearest difference is review sentiment: ēVision at 100% against Stray Scanner's 75%. ēVision also leads on update cadence (every 6 weeks vs every 6 months). On price, ads, in-app purchases and monetization model 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.
Stray Scanner ships an update every 6 months, ēVision every 6 weeks. The most recent releases landed on October 13, 2026 and October 8, 2026 respectively.
| Parameter | Stray Scanner | ēVision |
|---|---|---|
| Price | Free | Free |
| Rating | 5.0 (5 ratings) — better | — |
| Positive reviews | 75.0% of reviews | 100.0% of reviews — better |
| Number of ratings | 5 — better | — |
| Update frequency | Every 6 months | Every 6 weeks — better |
| Ads | No | No |
| In-app purchases | No | No |
| Monetization | Free | Free |
| Devices | iPhone | iPhone, iPad — better |
| Requires iOS | 18.6 | 18.6 |
| Further details — not scored | ||
| Size | 1 MB | 62 MB |
| Age rating | 4+ | 4+ |
| Developer | Kenneth Blomqvist | Efestos Hub |
Customer experience
Stray Scanner
ēVision
In-app purchases
Stray Scanner
No in-app purchases
ēVision
No in-app purchases








