Grid Friday 5 | Golden ratio grid for Fitii logo

Hey guys,
this Friday I decided to post the grid for Fitii logo that I've posted yesterday. Fitii is an fitness app based on competitive aspect with your friends, that keep you motivated during the training.

The logo concept is inspired by fitness dashboard and F letter. The construction of this icon is based on a golden ratio grid, that is very similar to square grid but instead of 1/1 proportion it's 1/1,618.

Did you ever have used this kind of grid?