Only you can answer that question for your situation.
For me, it is a very interesting and useful tool for locating QF FF awards. I have used it to locate dates within my desired range, and then I just go to the QF site to see what routes are being offered on those days. Saves a lot of endless searching on the QF site. It is interesting to see how the results vary from day to day - both increasing and reducing availability.
I cannot common on the UA access as I don't have a UA FF account.
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