Screen Caliper is a free Android app developed by Fometescu Octavian in the Utilities & Tools category. This handy tool allows users to accurately measure diameters, lengths, angles, and even areas of triangles on their screens.

One of the standout features of Screen Caliper is its ability to calibrate by specifying the screen's active width. By touching the triangle tips and pulling lightly, users can adjust the circle size according to the object being measured. What's impressive is that this can be done using only one touch point, making it convenient and efficient.

In addition to measuring diameters, lengths, and angles, Screen Caliper also offers the option to generate templates for circles or hexagons. These templates can be created using either user-entered sizes or predefined measurements, providing users with flexibility and convenience.

Overall, Screen Caliper is a practical and easy-to-use tool for anyone needing accurate measurements on their Android device. Whether you're a professional or a hobbyist, this app can assist you in various scenarios, from DIY projects to design work.