A free app for Android, by Black Sky Apps.
Touch Screen Calibration: Screen Test & Info is an Android application that allows you to analyze the performance of your device's touchscreen. The application calculates the value of several parameters, such as the touchpoint detection accuracy, the response time, and the delay between the detection of two or more points. The results are displayed in a graph. You can also view the values in a table.
The application also allows you to perform a visual test to see if your device is experiencing lag. The test is performed using a set of coordinates and the values are displayed in a graph.
