Smashtag is an iPhone app developed as part of the Stanford Universitys CS193p 2017 course.
Users can search for hashtags or twitter users in order to discover the most recent tweets on the subject.
They can at this point navigate through found Tweets and start exploring hashtags and mentions of each Tweet continuing the search.
They can also show all the images linked to the Tweets or, whenever necessary, use the Core Data facilities to query the informations found so far: tweeters, hashtags and user mentions for each searched term.