Choose from a library of built in charts then customise. Tag filters let you control which sessions to include whilst in-place controls offer flexible colour and styling options.
Do one thing many times and you'll get good at it, but not much good at anything else. That goes for sports training too.
By highlighting patterns in your session characteristics, fizilog's variation charts show potential weaknesses in your performance. Focussing on your weak areas is a great way to improve.
Looking at your session history fizilog can report short and long term trends, up and down, in your performance.
Tracking these long term trends is essential in fully understanding your personal capabilities and increases confidence in your performance.