I have always been curious about my ranking in the leaderboard as a function of time, since I have always suspected that I am rather slow on easy problems.

To learn Angular, I built a web app that displays your ranking throughout any given contest.

If you are interested, please give it a try: https://megaspazz.github.io/CodeRank/

As of now, it works with normal CF rounds and ICPC-style rounds; it should probably work with IOI-style contests, but they seem to be rare on Codeforces. It doesn't really work for marathon-style contests.

Example screenshot: