Barely functional

For a travel app, this has incredibly limited use. About the only thing it lets you do is check in for a flight (and most times, if you check in via the website, it wont reflect accurate details in the app). You cant change flights via the app; or if you can, the function is hidden somewhere deep inside. On the plus side, it does make it very simple for KLM to nickel and dime you to death for all sorts of "perks". Ugh. Stick with the website. Its a mediocre airline but at least the website offers options.

MohsinTS about KLM - Book a flight, v7.7.1