Opening the ipa file, and browsing the contents, there are a couple of plain text files - containing stop words, dictionaries and others on natural language processing.
The summarised results from the app are very random - pick any article other than the test case in the video and you won't get any useful output, 3 random sentences usually.
I thought it was a stretch that D'Aloiso taught himself the linear algebra, statistics, probability theory, NLP, and machine learning required to implement such an algorithm. Especially since he doesn't take a deep interest in programming.
I am guessing that he just outsourced the AI/algorithm part based on the articles content: 'we' and 'The Trimit team' and Nick just designed the UI. Overall, great concept, but poor execution (in terms of accuracy) and journalists seem to be buying the hype.
The summarised results from the app are very random - pick any article other than the test case in the video and you won't get any useful output, 3 random sentences usually.