I got tired of downloading the official grade pdfs or using super slow apps, so I build my own version.
Its main feature is the nearly instant student search even on considerable loads. It works by splitting the user stats into files grouped by the id prefix. Thus, each student doesn’t need to download all the data for 25000 student nation wide - instead only the data for around 400. This massively reduces load times, even on slow internet connections.
Appart from that, it shows overall statistics and student-specific statistics, allowing students to see how they compare with the rest of the nation. I could not find this feature anywhere else on the internet.