Dimens vs OnsiteBIM
Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.
Dimens
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DIMENS is a LiDAR-powered spatial scanning and documentation platform built for architects, interior designers, surveyors, and construction professionals. Scan interior spaces in minutes, generate floor plans automatically, extract accurate measurements, and export professional documentation directly from your iPhone. Whether you are creating an as-built survey, preparing a renovation project, documenting an existing building, or collecting site data, DIMENS helps you move from fieldwork to deliverables faster. Key Features • Fast LiDAR-based room scanning • Automatic floor plan generation • Accurate measurements and dimensions • DXF, PDF, OBJ, STL, and GLB export • Cloud-based project management • Team collaboration and project sharing • Structured spatial data for design workflows Reduce manual measurements, speed up documentation, and keep your projects organized from scan to delivery. DIMENS. Scan. Document. Deliver.
OnsiteBIM
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See your BIM model where it belongs: on the jobsite. OnsiteBIM brings BIM and construction together by placing 3D building models directly into the real world using your iPhone or iPad. Inspect, navigate, measure, and compare digital building models against physical construction—from active floor plates and mechanical rooms to basements and remote jobsites. HOW IT WORKS — FROM OFFICE TO JOBSITE Open Your 3D Model Open BIM and CAD models directly from your device, Apple Files, iCloud Drive, Google Drive, OneDrive, Dropbox, Egnyte, or other supported storage. Place Your Alignment Target Tape a printed Alignment Target to a known column, wall, or floor benchmark. Free print-ready targets and Revit families can be generated by your office or VDC team using the tools at www.onsitebim.app. Aim Your Camera & Inspect at 1:1 Scale Point your camera at the target, and your 3D model locks into place at 1:1 scale for real-world inspection. Alignment Targets are physical positioning anchors for your models—not QR codes or download links. POSITION YOUR MODEL YOUR WAY Use Alignment Targets for automatic positioning or place models manually when targets aren't available. • Auto Target Alignment — Position models in real-world space using a printed Alignment Target, including position, elevation, and orientation. • Manual Surface Placement — Place models on floor surfaces using joystick navigation, rotation controls, and elevation nudging. SEE EXACTLY WHAT MATTERS Filter individual BIM and CAD layers or use MEP ONLY to instantly hide architectural elements and isolate the systems you need. • HVAC ductwork • Plumbing pipes • Fire suppression • Electrical conduits and cable trays • Structural elements and rebar sleeves WORK WITH MAJOR BIM & 3D FORMATS Open models without requiring cloud conversion: • IFC — OpenBIM models, including IFC 2x3 and IFC4 • GLB & glTF — 3D models with PBR materials • USDZ — Apple spatial 3D models • OBJ & STL — 3D geometry with selectable measurement units Compatible with models exported from Autodesk Revit, Navisworks, SolidWorks, Archicad, Rhino, and SketchUp. MIX DIGITAL MODELS WITH THE REAL WORLD Use supported LiDAR-equipped devices to improve spatial understanding between your digital model and physical surroundings. • Real-Time LiDAR Occlusion — Physical walls, slabs, columns, and other surfaces can hide virtual geometry positioned behind them. • Interactive Transparency — Inspect digital building systems behind physical surfaces or inside concrete forms. CONTROL MODEL VISIBILITY Adjust model opacity from 0% to 100% to cross-reference virtual MEP runs, conduit racks, equipment, and other building elements against physical jobsite conditions. MEASURE IN 3D Use the surface-aligned 3D tape measure to verify clearances, slab elevations, and spatial relationships between physical surfaces and virtual model elements. Measurements are displayed in metric and imperial units. WORK WITHOUT THE CLOUD OnsiteBIM is designed for jobsites where network connectivity isn't always available. • On-Device Processing — 3D model parsing, spatial tracking, and rendering run directly on your device. • Work Offline — Inspect models in basements, mechanical rooms, tunnels, and remote jobsites without Wi-Fi or cellular connectivity. • Private by Design — Your 3D model geometry remains on your device during model processing and inspection. BUILT FOR THE JOBSITE A field-focused interface designed for active construction environments: • High-contrast HUD for bright outdoor environments • Large, glove-friendly touch targets • 2D directional joystick navigation • Precision elevation nudging • Thermal and battery optimization for extended inspection sessions COMPANION WEB TOOLS Free tools for offices and VDC teams, including Revit families, IFC export profiles, and Alignment Target generation, are available at www.onsitebim.app. Bring your BIM model to the jobsite.
Screenshots
Verdict
The clearest difference is ads: OnsiteBIM at none against Dimens's shown. Dimens's advantage is update cadence (every 3 days vs weekly). On price, in-app purchases, device support and iOS requirement 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.
Dimens ships an update every 3 days, OnsiteBIM weekly. The most recent releases landed on September 25, 2026 and October 2, 2026 respectively.
| Parameter | Dimens | OnsiteBIM |
|---|---|---|
| Price | Free | Free |
| Update frequency | Every 3 days — better | Weekly |
| Ads | Yes | No — better |
| In-app purchases | No | No |
| Devices | iPhone, iPad | iPhone, iPad |
| Requires iOS | 17.0 | 16.0 — better |
| Further details — not scored | ||
| Size | 41 MB | 22 MB |
| Age rating | 4+ | 4+ |
| Developer | Khora Design | Mihir Patel |
In-app purchases
Dimens
No in-app purchases
OnsiteBIM
No in-app purchases








