AngleMetric
EntropyMetrics: Contact Angle
About
Measure the contact angle of liquid droplets on surfaces using your phone's camera. Analyze surface properties with side-on and top-down modes, receiving results in degrees with a live profile overlay. Ideal for scientific research, engineering, and educational purposes.
What's New in AngleMetric
1.41
September 16, 2026
• Unlimited free measurements. Capture and save as many drops as you like, and view every record. • Introductory discount and 3 months free • Keeps measuring when no surface is detected • Quicker auto-capture. A small left/right angle difference no longer stops a capture. ASTM D8597 mode still enforces its 4° limit.
MoreSubscriptions & In-App Purchases
Pro Monthly
Monthly Access to Pro features (unlimited measurements)
FAQ
What is AngleMetric used for?
AngleMetric is used to measure the contact angle of liquid droplets on surfaces. This measurement provides insights into surface properties like hydrophobicity and surface energy, useful in scientific research, engineering, and education.
How does AngleMetric work?
The app uses your phone's camera to capture an image of a droplet. It then identifies the droplet's edge and fits it to theoretical curves to calculate the contact angle in degrees, displaying a live overlay of the fitted profile.
What are the different measurement modes in AngleMetric?
AngleMetric offers two primary modes: side-on for classic profile views of droplets, and top-down for flatter, more wetting drops where you input the volume to calculate the angle.
Can I export my measurements from AngleMetric?
Yes, AngleMetric allows you to save records of your measurements directly on your device. These records can be exported in CSV format for further analysis.
What devices is AngleMetric compatible with?
AngleMetric is supported on iPhone and iPod devices. Phones with ultra-wide angle lenses, such as iPhone 11+, are noted to image small droplets better.
What is the pricing for AngleMetric?
AngleMetric is free to try. A one-time Pro purchase or a monthly subscription removes limits, adds unlimited measurements, and enables saved records and exports. An Analytical Lab plan is also available for teams.
How often is AngleMetric updated?
The latest version of AngleMetric is 1.4.0, and it was last updated on August 18, 2026. This suggests regular updates to improve functionality and compatibility.
What is the age rating for AngleMetric?
AngleMetric has an age rating of 4+, making it suitable for a wide range of users, including children for educational purposes.
