3d · engineering · threejs
Scan it, own it: a free LiDAR scanner with no tiers
Capture a room with LiDAR and export DXF, USDZ, a quantities PDF, photos and notes. On-device, free, ad-free. No account, no paid tier.
By Jorge Sierra
Most 3D scanning apps follow the same script: scanning is free, and the export costs money. You scanned your own building, and now the floorplan is behind a paywall.
We built the opposite. Lagarsoft LiDAR Scanner captures rooms with the LiDAR scanner on iPhone and iPad, runs entirely on-device, and is free and ad-free. There is no tier, no account, no upsell. You scan, you export, and what comes out is yours.
What you get to keep
The geometry is the easy part. What usually gets stranded is everything around it: the measurements, the location, the notes and photos you took standing in the room. The app keeps all of it, and exports in the formats you actually work in:
- DXF: a 2D floorplan for AutoCAD, LibreCAD, or QCAD. The export most consumer scanners won’t give you, and the one a CAD or BIM workflow needs.
- USDZ: the 3D mesh, for AR Quick Look and the web viewer below.
- Report: paint and flooring quantities per room, as a PDF.
- Everything (ZIP): DXF, USDZ, report, photos, and notes in one package.
It also does the takeoff for you: floor area, wall area, paint volume, room count, plus GPS location, a map pin, and voice or text notes per project. A scan comes out as a measured, located, documented record, not just a shape.
View it anywhere, no install
The web viewer opens your USDZ in the browser. Drag the file in and the floorplan renders in Three.js, with a reset view and a file switcher. No sign-in, nothing to install, works on desktop, tablet, or phone. Send the file to anyone and they open it the same way.
Getting a RoomPlan scan to render faithfully on the web is the hard part, and it’s what the viewer exists to solve. We wrote up the converter behind it, USDZ to Three.js, matching iOS fidelity, here.
Why free
This isn’t the business. We build production-grade software for AEC, MEP, and real estate teams. That’s the work. These are tools we needed and made open because the principle behind them is the one that runs through everything we do: you should be able to verify the work before you trust the people who made it. A tool that runs on-device and hands you everything makes that argument by itself.
It’s the same reason every first conversation with us starts with a diagnostic you can hold, not a sales call. Hand over the real artifact and let it speak.
The scanner is free on the App Store. The viewer is live at usdz-viewer.lagarsoft.com. For the full picture of what the app exports and why it stays free, see the LiDAR Scanner page. If it sparks an idea for something your team needs, tell us what you’re building.