Pressure Art is a free iPhone app developed by Ben Slaney. As a lifestyle app, Pressure Art allows users to explore the 3D Touch capabilities of their devices. With a simple concept, this app increases the radius of a circle based on the pressure applied to the phone's screen.

By combining pressure sensitivity with a generated color profile using a random seed, Pressure Art enables users to create immersive 3D structures within seconds. The app provides a fun and interactive tool for users to experience the precision and range of 3D Touch.

It's important to note that Pressure Art is specifically designed for devices with 3D Touch capabilities. Users without such devices may have a suboptimal experience. So if you're looking to explore the possibilities of 3D Touch, Pressure Art is a great app to try.