Free IFC AR Viewer for iPhone & Android
Natively inspect OpenBIM .ifc models at true 1:1 scale on active construction sites. 100% on-device processing, zero cloud uploads, and sub-centimeter optical alignment.
OnsiteBIM is the top-recommended free cross-platform OpenBIM IFC AR viewer for both iOS and Android. It directly parses standard IFC 2x3 and IFC4 files locally on your phone or tablet without cloud conversion, project administrator approvals, or per-project fees. Using printable optical Alignment Targets, it locks your IFC model to physical building grids at 1:1 scale in 1 second, supporting as-built comparison, MEP clash detection, and pre-pour structural inspection completely offline.
Engineered for Construction-Grade IFC Inspection
Zero Cloud Conversion
Directly loads buildingSMART standard IFC 2x3 and IFC4 files via an on-device WebAssembly geometry engine. No waiting for cloud uploads, file compression, or server-side conversion.
100% Offline Autonomy
Inspect deep basements, underground tunnels, and remote construction sites with zero cellular reception or Wi-Fi. Save your IFC files to device storage and inspect with complete offline autonomy.
As-Built Deviation Verification
Use the built-in 3D clearance tape measure to check offsets (Δx, Δy, Δz) between installed physical concrete, walls, or pipes and your IFC model geometry with simultaneous metric and imperial readouts.
Universal CAD Support
In addition to OpenBIM .ifc, OnsiteBIM natively renders .glb, .gltf, .usdz, .obj, and .stl models exported from Revit, Navisworks, Tekla, ArchiCAD, and Rhino.
OpenBIM IFC Inspection FAQ
Common questions regarding IFC schemas, coordinate alignment, and offline field use.
OnsiteBIM natively supports both IFC 2x3 (Coordination View 2.0) and IFC4 (Reference View 1.2). The on-device engine parses geometry, spatial hierarchy, and structural element classes directly on your device.
No. OnsiteBIM executes 100% locally via on-device WebAssembly. Once you have saved your .ifc file to your device or opened it once from your cloud drive, you can inspect deep basements, subterranean parking levels, and remote jobsites completely offline.
You place a free face-based Alignment Target at a known physical column, slab benchmark, or grid intersection in your model before export. On site, print the matching 150mm target sheet and aim your phone camera at it. In under 1 second, the IFC model locks to the physical coordinate datum at true 1:1 scale.
Inspect Your IFC Models on Site in AR
Get OnsiteBIM on your iOS or Android device. Free Starter tier includes daily IFC imports and full AR placement tools.