HCE Test Tool is an Android application developed by Petr B. It is a contactless card simulator based on templates (HCE Image XML) used primarily for testing the progress of contactless payments. This app is a useful tool for developers who need to test contactless payments, and it allows users to display APDU-level communication with the ability to display parsed TLV values.

One of the best features of this app is the ability to change card types and schema by selecting from multiple XML templates. This means that developers can test a wide range of scenarios and ensure that their payment systems are working correctly. The app also has a test history that can be used to keep track of previous tests and results.