MacObserver lists Apple’s ‘top apps ever’ charts. Games dominate the paid lists, especially on the iPhone. But on the iPad, things are different. Pages leads the list, and the top 25 also includes Penultimate (note-taking), GarageBand (music-making), GoodReader (PDF reader, manager and annotator), Numbers (spreadsheets), Keynote (presentations), Quickoffice Pro HD (office suite), Notability (note-taking and PDF annotation), and Splashtop (remote desktop).
It’s arguable that there’s not a huge amount of variety here: most of the big apps are office- or student-oriented. But that’s also the case for traditional PCs, where the most popular apps are for creating Word documents and PDFs. What it does show, however, is that anyone arguing that iPads are only for consumption is deluded.