Better off using their website
I’ve used the website for years to get info about airports. When I saw that they had an app I was pretty excited. Boy was I disappointed. It doesn’t have half the info I want (namely frequencies), and the UI is clunky, and reminds me of the very early days of android (think froyo: roughly 2010) Not only that, it is clearly developed for an iPhone w/ low resolution and shows up as a tiny rectangle that only takes up half of the available screen real estate. It’s got a button to make it bigger, but even that doesn’t fill the screen on my 6th Gen iPad mini. This was clearly an attempt to check the “we have an app” box and nothing more. Just use the website. It’s already well designed, and doesn’t crash.