Is it just me, or is LightTable still pretty far from their original promise? I downloaded the app a few weeks ago, and I never saw anything that gave me realt

Is it just me, or is LightTable still pretty far from their original promise? I downloaded the app a few weeks ago, and I never saw anything that gave me realtime feedback on my coding. I admit, I was just playing around with putting in the odd function and variable, but it didn't give me anything submlime text doesn't currently. As far as the spending ' hours or days working on code before they can make sure it actually works', isn't this solved with TDD?