Instant 3D Digital Twins for Smarter Real Estate.
Public company, workplace, funding, and market signals
Updated Jul 29, 2026
YC S23 startup that now markets SiteScan, an iPhone-first workflow for turning smartphone video into 3D point clouds, CAD/BIM/GIS deliverables, and digital twins for trenches, house connections, and broader AEC/civil-engineering use cases. Earlier YC materials described a now-pivoted ML reproducibility platform, so current website/LinkedIn are the best sources for the present product.
Primary product
SiteScan iPhone app and workflow for smartphone-to-3D digital-twin capture and CAD/GIS/BIM as-built documentation
Founded
2023
Headquarters
San Francisco, California, United States
Team size
1-10 employees
Industry
Software Development
Sub-industry
Digital twin / construction tech software
Offices
0 jobs at sizeless
Check back later for new openings
Business model
Stage
pre-seed
Total raised
$500K
Latest round
Pre-Seed · Sep 2023
Latest amount
$500K
Sep 2023 · Y Combinator
Investors
Small, hands-on, deeptech team with a strong field-feedback loop, fast iteration, and high-touch customer support.
Benefits
Pricing
Custom pricing based on project scope, data volume, and deliverables
Differentiators
Technology
Customers
Estimated revenue
roughly $100k-$250k/year (third-party estimate around $171k)
Estimated monthly visits
937
LinkedIn · Jun 2026
CEO Julius Schilling described trench site visits with pilot customers, saying the company learns from on-site documentation pain points and turns a single trench video into infrastructure documentation with computer vision and spatial AI.
Aimyflow · Mar 2026
Third-party profile describing sizeless as an AI-powered digital twin and surveying platform for civil engineering and building workflows, with smartphone-video capture and CAD/GIS outputs.
HubMub · Dec 2025
Job listing describing sizeless as a YC-backed team building smartphone-video-to-digital-twin workflows, highlighting React/iOS, 3D reconstruction, Three.js/WebGL, and flexible work arrangements.
LinkedIn · Dec 2025
The company said its AI-driven pipeline already delivers sub-centimeter accuracy indoors and that it is testing capture of complex roof geometries with a smartphone, while comparing its approach to drone, LiDAR, and classical photogrammetry workflows.
LinkedIn · Nov 2025
The company said it turns smartphone videos into high-accuracy digital twins with no special hardware and is hiring an app-development intern in Switzerland.