Perform exploratory testing to support the testing of an agile project

The objective of the exploratory testing is to do risk based testing and give a quick feedback to the development team. It can be done by either experienced testers or subject matter experts of the system
Mind mapping is one of the be best tools to do exploratory testing .It works really well for apps testing

One of the ways of designing the mind maps is by adding screen by screen flow of a mobile or web app
I once tested a clothing retail website during a short 2 weeks contract .As we had limited time left before the launch and there was no test design in place, we had to rely totally on the mind maps

In another project I tested Auckland Airport app using the following mind map