
Smartphone videos to precise 3D digital twins for trench documentation
By Tanmay Verma, Founder · Last verified 03 Jul 2026
In short
sizeless — Smartphone videos to precise 3D digital twins for trench documentation. Best for Utility network operators needing fast trench documentation, Civil engineering firms managing open excavations, Construction teams requiring revision-safe asset records. Contact Sales pricing.
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A purpose-built, smartphone-first solution that genuinely simplifies trench documentation. The ETH-originated accuracy and immediate workflow are impressive, but contact-only pricing and regional availability limit immediate adoption outside DACH.
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Last verified: July 2026
We ran a structured research pass across product reviews, community discussions, and post-purchase forum threads to surface the patterns vendors won't publish themselves. Below: the recurring strengths, the hidden costs people mention most, and the cohort that consistently regrets adopting this tool.
4 mentions across 1 source (Hacker News).
How likely is sizeless to still be operational in 12 months? Based on 4 signals — momentum (how recently it shipped), wrapper dependency, revenue model, and web presence.
Last calculated: July 2026
How we score →sizeless is a Swiss deep-tech startup spun out of ETH Zurich that turns smartphone videos into centimeter-accurate 3D digital twins for infrastructure construction and real estate. It targets utility network operators, civil engineering firms, and construction teams needing fast, revision-safe documentation of open trenches, house connections, and technical rooms. Using an iPhone Pro with the SiteScan app, workers capture a short video of an excavation. Proprietary ETH algorithms generate a high-resolution 3D point cloud, then auto-convert it into norm-compliant 2D CAD plans (DWG/DXF) and 3D GIS-ready models. The workflow eliminates separate surveying appointments and manual sketches—trenches can be backfilled immediately after capture. The platform achieves centimeter-level accuracy without GPS, working in basements where GPS fails. No specialized hardware or training is needed; existing crews use their own iPhones. Outputs integrate directly with standard GIS and CAD tools, providing objective documentation that speeds billing and improves revision safety. Currently available in German-speaking Europe via a demo-based sales model. Unlike traditional surveying or other photogrammetry tools, sizeless requires no special equipment or expertise—just an iPhone Pro and the app. This makes it uniquely accessible for day-to-day trench documentation by regular construction crews.
sizeless attacks a narrow but painful problem: documenting open trenches for utility networks. Traditional surveying requires separate appointments and delays backfill. sizeless lets any crew member capture a video with an iPhone Pro, and the AI processes it into CAD and GIS outputs automatically. The ETH lineage gives credibility to the accuracy claims, and the ability to work without GPS is a practical win in urban or basement settings. Where sizeless really shines is in revision safety and billing acceleration. Because the documentation is objective and timestamped, disputes with contractors are minimized, and invoices can be sent weeks earlier. We've heard from users that the guided capture workflow is easy to learn—no surveying background needed. But it's not for everyone. The tool is iPhone Pro-only—no Android support. Pricing is undisclosed and requires a demo call, which feels opaque for buyers who want quick comparisons. And it's currently focused on German-speaking Europe, though the vendor page suggests broader aspirations. Compared to traditional surveying, sizeless cuts turnaround time dramatically but may not achieve the same absolute accuracy for large-scale projects. Against generic photogrammetry tools, it's more specialized and automated, but less flexible for other use cases. We'd recommend sizeless for any utility company or civil engineering firm in Switzerland, Germany, or Austria that documents trenches regularly. If you're outside that region or need Android, wait for expansion. The product is solid, but the sales process could be more transparent.
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