Context: In the field of Mobile Application Development, testing practices can be very expensive and time-consuming - especially in an industrial setting. One of the main causes of this phenomenon is the constant evolution of the GUIs aspect, leading to frequent breakages of layout-based test cases. Goal: The aim of this thesis’ work is building a tool that repairs layout-based test cases that break in the transition from an application release to the immediately following one. In particular, the tool tries to find in the newer release the widget that is most similar to the one the test located in the previous release, and it consequently replaces the related method calls.