I use it to view time-series data from my homemade ECG logger, to debug whether my heart is beating. All the built in analysis tools are fun to play with, too.

I use it to view time-series data from my homemade ECG logger, to debug whether my heart is beating. All the built in analysis tools are fun to play with, too. It's mildly disappointing that it doesn't really sound like much of anything when played through a speaker.