I used it to remove old tweets, but nothing else. The presets aren't very flexible. The oldest tweets I could delete was anything more than 3 months old. I would have preferred a longer timeframe like older than 2 or 5 years.
I didn't try it for Facebook. It has three general settings (public, friends, and just me). I've already tuned Facebook as best as I want. It wasn't clear what FB would overshare or under-share with Jumbo's settings.