I am unfamiliar with both KVS tool and Expert Flyer. Do frequent flyer generally prefer one over the other? Or there are mixed opinions which depends on which features are most useful to a certain traveller? Do people see value in getting both or that would be redundant?

Both products are discussed in the Travel Tools forum, and each has a dedicated thread:

http://www.flyertalk.com/forum/trave...ew-thread.html

http://www.flyertalk.com/forum/trave...sk-thread.html

Thank you! That forum will be useful. I did not know it even existed since I never saw it listed on FT page I normally access directly.

They differ somewhat in what data is available, but more importantly how that data is obtained.

ExpertFlyer is web based, EF pays to access and publish the availability displayed. Very reliable and no features that I know of have been removed or unavailable at any point.

KVS is a windows application which scrapes data from various websites, sometimes using login information you provide to perform award searches (which you could do yourself for free on those websites). You are not actually paying for the data, but rather for the tool which needs constant updates so that it can scrape the data from websites as they're updated. The options available can change or disappear completely if the website owners change/remove the ability for KVS to scrape their data (often illegally against their website T&C's).

As mia has provided links to this topic in other forums, I'm going to close this threa.

Thank you,

MileageAddict
Moderator