Well I think the "lite" version is free but its also quite limited, I find the platinum service to be extremely useful, you can search all the GDSs, show availability for flights including fare buckets (now including upgrade/award), show all available fares for a route and fare rules, seat maps, and award availability. The award availability uses the ANA tool, I would guess its screen scraping but it seems far faster than acutally using the ANA website, also its a fun way to self inflict great amounts of frustration when your looking at a '+' next to a flight but the CSR on the phone is saying nope.

More than once it has saved me in irrops, when a flight cancels I can quickly dump all the available flights and call 1K with: and here is the fix I want, vs blindly hoping they are giving you the best option.