3D Splat App

3D Splat App is a free macOS app from Laan Labs, a computer vision, spatial computing and AI development studio based in New York and New Orleans. The studio was founded by brothers Christopher and Jason Laan and created 3D Scanner App, one of the first LiDAR scanning apps on iOS, whose App Store listing was sold to a private investor in July 2025. 3D Splat App reached the Mac App Store on March 23, 2026 as version 0.1 and stands at version 0.3.1, released on September 16, 2026.

The app is built on a splat trainer that Laan Labs ported from CUDA to Metal. The studio describes the result as written entirely in C++ and Metal, with no PyTorch and no autograd, and with Swift appearing only in the interface. Structure from motion runs through a built-in COLMAP whose feature extraction and matching were also moved onto Metal. Because a Mac GPU shares memory with the CPU, the practical limit on scene size is the Mac’s unified memory instead of a VRAM ceiling.

Input is a folder of JPG or PNG images, a video, an existing COLMAP project or a Nerfstudio format dataset. Version 0.3 added initial support for 360 video, which the app converts from equirectangular footage into a set of pinhole views. Training offers Fast, Medium and HD presets that take roughly 2, 5 and 10 to 20 minutes depending on the scene and the machine, with PSNR and loss curves shown while the splat trains. Masking accepts PNG alpha, separate mask folders and built-in person segmentation, and a mask editor paints corrections frame by frame. Export covers PLY, compressed PLY, SPZ and SOG.

Since version 0.3 the app also works as a viewer and editor for splats made elsewhere. Edit tools crop a splat with a box, sphere or plane, select and delete splats by painting over them, and move, rotate and scale the whole scene with a transform gizmo. Viewer mode opens PLY, SPZ and SOG files from the Finder in tabs or a split view, and Quick Look previews the supported formats. The camera path video renderer carries a look panel with a backdrop fill, depth of field and colour grading.

3D Splat App requires a Mac with an Apple M1 chip or later and macOS 15.6 or later. Its App Store listing records that the developer collects no data and states that images and 3D data never leave the Mac. Laan Labs builds the same pipeline into the workflows of teams and licenses its apps and technologies as white label and source code solutions.