AngleMetric app icon AngleMetric
Figure 1 from the whitepaper: the two capture geometries, side-on for hydrophobic drops and top-down for hydrophilic drops
How it works — the two capture geometries: side-on for beading, hydrophobic drops; top-down for flatter, hydrophilic drops.
AngleMetric app icon
Now available for iPhone

AngleMetric

Drop shape & contact angle analysis

Capture a droplet side-on or top-down and get a gravity-corrected contact angle from a Young–Laplace curve fit in seconds — with 21 CFR Part 11–ready records.

Download on the App Store

Look for AngleMetric on your Home Screen.

Side-on & top-down capture Young–Laplace curve fit 21 CFR Part 11–ready On-device analysis
Figure 3 from the whitepaper: a saved side-on droplet image with the Young-Laplace curve fit and contact angle annotations
A saved side-on measurement, with the Young–Laplace curve fit and gravity-corrected contact angle overlaid.
First page of the AngleMetric whitepaper: AngleMetric, mobile sessile-drop goniometry

The whitepaper

AngleMetric: mobile sessile-drop goniometry. The mathematics, the methodology, and preliminary performance data — segmentation, the axisymmetric Young–Laplace fit, gravity correction, and how the measurements hold up in practice.

Read the whitepaper (PDF)