To get a great lawn, the trick is to cut ‘little and often’. The recommendation is to never cut more than a third of the blade of grass off in one go.
A robot mower will normally be scheduled to cut every day to ensure the grass stays at a constant height even when it’s growing fast (it can grow up to 3-5 cms per week).
Using traditional mowers, most people don’t have time to ‘cut little and often’ but most robot mowers (excluding the Ambrogio L60 Elite & Elite S+) mow based on a user specified schedule (my mower goes out everyday) so they take the ‘little and often’ to the extreme.
The Ambrogio range uses its GPS system to ensure that each square area of grass is cut every 3 days.