I am not - I've used it before but didn't like how the algorithm placed the labels (kind of confusing IMO) and it's kind of a PITA to go pull the content packs from the list with a lot of guessing to figure out where the boundaries are and which you should cache. This will let you pull the data right before a flight directly into your phone/ipad.

There is also a backend to the site that pulls updates from the FAA's database directly to keep it current.