I#m a master in make such tools useless by cheating myself not using them after a while. Centered seems to be different. Maybe it's the weight, that it is a complete desktop app or that it combines several techniques at once.

The Voice of the Coach and the Point ranking could also made it for me...
Like someone observes if your working or not...

The time i spent for my projects now was worth the money within a day...

Note. Feature request are heard from the team and most of the thing i supported are available within in a month after buying. Fabulous.