[dbtc]

I use gfx status http://gfx.io/ for this.

[rMBP]

I think you're confusing the two.

gfxCardStatus only shows which graphics card is active.

Pupil only allows you to change screen resolutions.

They complement each other, but have no overlapping features.

[TallboyOne]

Lol at your username. How appropriate.

[rMBP]

Stop talking to your computer and get back to work!