Buf3D+
3D & LDraw viewer for Android
View huge 3D models in cinematic quality, build LDraw models step by step and convert them for 3D printing.
One-time purchase · No ads · No subscriptions
See it in action
The video loads from YouTube when you press play.
Build it step by step
Open an LDraw model and follow it like building instructions, step by step or part by part.
- Parts list for every step, with colour and your progress in each batch
- A window with the next part, and the part highlighted on the model
- Swipe the list to flip between steps, like the pages of a booklet
- Portrait or landscape, and distraction-free full screen
Cinematic quality
A home-grown render engine designed to make models look real on a phone.
- Realistic plastic, metal, rubber and pearl
- Real-time shadows with a sun you can move, and sunsets
- Ambient occlusion, rim light for dark parts and accurate outline edges
- Skies, clouds and environment reflections
Huge models on modest phones
Buf3D uses Progressive Fans, a multiresolution technology created by Antonio Cortés: it builds and displays models of millions of triangles out of core, adjusting the detail in real time.
- Scans and meshes with millions of triangles, smooth
- Models with thousands of parts, like whole ships and cities
- Compressed the first time, then they load instantly
Watch the technology in action (2013, desktop)Vertex reordering (2013, technical)
Open and convert
Nearly 15,000 models in the catalogue, plus your own files.
- Reads LDraw (DAT, LDR, MPD, L3B), LXF/LXFML, 3DS, LWO, OBJ, STL, PLY, OFF, DXF and PRJ
- Exports to OBJ, STL, 3DS, LWO, OFF and POV-Ray choosing the triangle count: ideal for 3D printing
- Also a JPG image and the parts list
- LDraw parts library downloadable or from your own ZIP, offline
Gallery
Real screenshots of the app on a phone.
Frequently asked questions
How much does it cost?
It is a one-time purchase on Google Play: no ads, no subscriptions and no in-app purchases.
What is LDraw?
An open standard for describing brick-built models part by part, with a library of thousands of parts. It is used by programs such as LDCad, LeoCAD or Studio, which can export your designs to LDraw to view them in Buf3D+.
Does it work offline?
Yes, with your own files. For LDraw models you can install the parts library from a ZIP. The model catalogue does need a connection, as it links to the original websites.
Which phone do I need?
It runs on Android 4.0 and later. Shadows and ambient occlusion need OpenGL ES 3, which almost any current phone has.
Is it useful for 3D printing?
Yes: it opens STL and OBJ, and exports any model to STL or OBJ choosing the triangle count.