Blinkenlights! app for iPhone and iPad

Blinkenlights lets you see the status of anything you want at a glance with a series of colored dots (LEDs). You can create your own Blinkenlights or add to your dashboard from the included registries.

...and of course, I must include the following:

ACHTUNG! Alles touristen und non-technischen peepers!

Das machine control is nicht fur gerfinger-poken und mittengrabben. Oderwise is easy schnappen der springenwerk, blowen fuse, und poppencorken mit spitzensparken. Der machine is diggen by experten only. Is nicht fur geverken by das dummkopfen. Das rubbernecken sightseenen keepen das cotten picken hands in das pockets, so relaxen und watchen das blinkenlights.