01 Overview

Particle size distribution from your phone.

Analyse aggregate from calibrated phone photos. Inspect the detected particles and size distribution, then continue the same analysis on the web.

Try for free View evidence

Available on App Store , Google Play and the web .

Material: Aggregate
Calibration: Ruler or board
Results: PSD curvesShape descriptors

Currently tested down to 1 mm. Smaller sizes are in development.

Example analysis of Granite 8–16 mm: the complete group of outlined particles, cumulative particle size distribution and six size statistics from the same sample — Example analysis · Granite 8–16 mm

02 Segmentation

See the detected particles.

Compare the original photo with the detected particle boundaries.

Photo instructions and examples

White granite sample, with a movable divider revealing the detected particle boundaries on the same photo — Drag to compare. Same sample, same photo.

03 Particle review

Inspect individual particles.

Select any outlined particle to see its passing size and 2D shape below. In the app, keep or exclude particles before saving your review.

Available on iPhone, iPad, Android and web

Real white granite sample with contours from the Granumetrics PSD pipeline — Granumetrics PSD contours. Size and shape from the same sample analysis.

Workflow

Capture, review
and report.

One analysis moves from phone capture to the reviewed result and report.

01Capture

New Analysis screen in the Granumetrics phone app

Capture the sample.

Name the sample, select the material and add calibrated photos. You can start offline and upload later.

02Review

Segmentation evidence review in the Granumetrics phone app

Review the detected particles.

Compare each source photo with its detected boundaries, then complete the review.

03Report

Particle-size distribution result in the Granumetrics phone app

Report or export the result.

Open the D-values and curve, then create a report or export. Sample name and Analysis ID stay unchanged.

05 Report

Export results with photos.

Save D-values, the PSD curve and sample photos in a PDF report. You can also include 2D shape descriptors or export data as CSV.

Open example report

Anonymised Granite 8–16 mm example. The distribution estimates mass passing from images, assuming uniform density; it is not a physical sieve certificate.

Photo appendix

Original gray granite sample on a dark tray, with the calibration board below — Original photo

The same gray granite photo with the app’s green included-particle contours — Segmented photo

Anonymised example app report with the real 315-particle granite result, a grading curve and standard sieve table — Example report · Granite 8–16 mm

06 Get started

Try one of your samples.

Create a free account and start with your own sample.

Try for free How to take the photos

Particle size distribution from your phone.

Granite 8–16 mm · example analysis

See the detected particles.

Inspect individual particles.