There is a ton of empty white space on the calendar tiles, especially when it comes to vertical spacing which doesn’t seem to scale like it does horizontally which leads to things taking up a lot more room than they really need to. This is really apparent when you’re a triathlete that can have a whack of activities on a given day. I did up a quick mock-up of what the same page would look like if the vertical spacing of things was tightened up a bit–it’s a pretty large amount of space freed up. There are other calendar enhancements I’d like to see, but I’ll focus on this one for now.
Standard Calendar view on Desktop browser:
Modified Calendar view on Desktop browser (w/slightly darkened tile outlines):
Standard Calendar view in desktop mode on my phone: