ExPlora4D

**ExPlora4D – Explore 3D Anywhere**

ExPlora4D is a powerful 3D viewer for heritage, architecture, archaeology, design and more. Open 3D models, BIM files and point clouds directly on your phone or tablet, inspect them in detail, take measurements and explore complex models — no computer required.

**OPEN YOUR 3D DATA**

View a wide range of 3D formats directly on your device:

• glTF / GLB, OBJ, FBX, STL, PLY, DAE, 3DS, 3MF, USD / USDZ, VRML, AMF, KMZ, VOX, LWO and more
• IFC building models with element hierarchy and properties
• Point clouds including LAS / LAZ, PCD, XYZ and PLY
• Large streamed models using 3D Tiles and Potree with progressive loading and level of detail
• Upload unsupported formats such as Blender, Alembic, STEP, IGES or E57 to the repository and have them converted for viewing

**WORKS OFFLINE**

Models opened from your device or saved from the ExPlora4D repository are stored in your on-device library and remain available offline.

Your files are not uploaded unless you explicitly choose to upload them.

**MEASURE AND ANALYSE**

Explore your models with professional inspection tools:

• Measure distances, angles and areas using model units
• Check the overall dimensions with bounding-box measurements
• Use clipping planes to cut through models and inspect their interiors
• Browse the scene hierarchy and show, hide or inspect individual elements
• Analyse point clouds with adjustable point size, colouring and Eye-Dome Lighting

**MAKE YOUR MODEL LOOK RIGHT**

Adjust the way your model is displayed:

• Lighting and environment presets including studio, neutral, sunny and golden hour
• Different shading modes and wireframe display
• Custom background colours and gradients
• Full-screen viewing
• Smooth touch controls for rotate, pan and pinch-to-zoom

**EXPLORE THE REPOSITORY**

Browse models published in the ExPlora4D repository, save them for offline use, or upload your own files for conversion.

**PLANS**

**Free** — all core viewing and measuring tools, with ads.

**Pro** — one-time purchase that removes ads.

**Business** — monthly subscription with no ads, online repository browsing, higher upload and conversion limits, support for connecting your own repository, annotations with guided tours, IIIF import/export and the materials editor.

Prices are displayed in the app in your local currency. Subscriptions renew automatically and can be cancelled at any time through Google Play.

**LANGUAGES**

Available in English, Polish and German.

**PRIVACY**

No account is required to use ExPlora4D. Your models stay on your device unless you choose to upload them.

Privacy policy:
https://viewer.thedworak.com/privacy.html

**FROM RESEARCH TO YOUR PHONE**

ExPlora4D grew out of the DFG 3D Viewer, an open research project for presenting 3D data in cultural heritage repositories.

Have a problem or an idea? Use **Report a bug** directly in the app. We read every report.