Idea of sport calendar – is a web application, which helps athletes to track their progress in gym. When athlete finishes an exercise – he came to our site to save the information. For example, he writes that he did press of a bar 8 times with weight 100kg. This data together with timestamp is saved to database. Then, on a dashboard athlete sees: •	what exercises he did today, •	what he did a week ago (on the same weekday), •	what he did 2 weeks ago.