3D & CAD viewer for Android

Open any 3D model. Measure it like CAD.

Mirari opens STL, OBJ, 3MF and GLB files in seconds, and STEP / IGES with Pro, then lets you measure the real geometry: hole diameters, spacing, gaps and angles. All on your phone, offline.

Get it on Google Play Free to use. Pro is a one-time purchase.

.stl
.obj + .mtl
.3mf
.glb / .gltf
.step / .stp
.iges / .igs

Mirari measuring the distance between two hole rims on a STEP part: axis spacing 3.877 mm, minimum distance 3.140 mm, with both rims highlighted.

Formats

Straight from the slicer, the CAD tool or the asset store

Open files from your phone, cloud drives, downloads and email attachments. Share a model with its materials and textures together and Mirari puts them back on.

Format	Files	What Mirari reads
STL	.stl	Binary and ASCII. Multi-million-triangle prints stay smooth.
OBJ	.obj .mtl	Materials and textures from the .mtl and the images you pick with it.
3MF	.3mf	Colors and multi-part build plates from your slicer.
glTF	.glb .gltf	Textures and the full node hierarchy.
STEPPRO	.step .stp	Colors, names and assemblies from SolidWorks, Fusion, Onshape and FreeCAD, with the exact geometry kept for measuring.
IGESPRO	.iges .igs	Surfaces and solids from older CAD and CAM tools.

Features

Built for checking parts, not just looking at them

Exact measurements from the CAD geometry

On STEP and IGES files Mirari measures the B-rep surfaces themselves, not the triangles drawn on screen. Tap a hole rim, a face or an edge and read its true dimensions; tap two and get how they relate.

A · Circle edge: Ø 1.034 mm
B · Circle edge: Ø 0.4398 mm
Axis spacing: 3.877 mm
Min distance: 3.140 mm

Exact rim-to-rim measurement on a STEP part.

Point-to-point measurement across a gear with vertex snapping: 43.96 mm.

Print check before you slice

Find what breaks a print while the model is still on your phone.

Holes, non-manifold edges and flipped faces, counted and highlighted
Overhangs past your support angle, painted on the model
A clear verdict: watertight and ready to slice, or what to fix

Print check report: watertight, ready to slice, 19.6% of the surface needs support past 45 degrees.

Overhangs painted red on the underside of a torus knot.

See the model the way you need to

Orbit, pan and pinch with inertia. Snap to front, top, side or iso views, switch to orthographic, and turn the model 90° about any axis when a file comes in lying down.

Shaded, wireframe, shaded + wire and vertex modes
Normals view and back-face highlighting to spot flipped triangles
Show, hide or isolate bodies in multi-body parts and assemblies
Section cuts, studio lighting and background presets

Shaded plus wireframe view of a torus knot.

Normals view with colored surface normals.

Mirari Pro

One purchase. Every tool. No subscription.

Viewing STL, OBJ, 3MF and GLB is free. Pro unlocks the tools below once, for good, and restores on your other Android devices.

STEP & IGES

Open CAD files from SolidWorks, Fusion, Onshape, FreeCAD and more.

Exact CAD measurements

True diameters, gaps, angles and edge lengths from the CAD geometry.

Measure

Tap two points for distances with ΔX / ΔY / ΔZ and vertex snapping.

Print check

Holes, non-manifold edges, flipped faces and overhangs.

Section cut

Slice through a model to inspect walls and internals.

Inspection views

Normals view and back-face highlighting.

Export

Save as STL, 3MF or OBJ.

Multiple models

Side by side, or overlaid to compare versions.

View in AR

Place the model on a real surface at true scale.

Clean HD screenshots

No watermark, up to 3× screen resolution.

Private by design

Your models stay on your phone

Files are read and displayed on the device and never uploaded. There's nothing to sign up for and nothing tracking you. Read the privacy policy.

No ads
No tracking
No account
Works offline

Mirari: 3D & CAD Viewer

For Android 10 and newer.

Get it on Google Play