Brilliant - I use the free app as a PhD student it is a great program for orgainising large amounts of data and keeping everything in one place. The system of using different views for the same data makes it very easy to keep track of documents read, interviews, chapters etc. It’s very easy to filter things down to just the bits you want. Amazed that this is free. If it had a mind-map option as well I wouldn’t need to use anything else!