Ryanair

Updates for a delayed flight were inaccurate or non-existent. We were told that our flight would be delayed 12 hours but the app showed departed. When following up an expense claim, I could not see the complete conversation, only the most recent update. There is no clear access to a complaints procedure. I find the whole interface difficult to navigate apart from access to the most obvious features.

It works most of the time. Sometimes it doesn't. A lot of annoying pop ups trying to sell extra bags, seats, insurance, hire cars, hotels... Takes longer than necessary to book a flight. Recently it's started an automatic download of inflight magazine (or some virus under that name, who knows) which cannot be stopped. No app should download anything onto my phone without my consent.

Constantly trying to fleece you for extras. All sorts of tricks, e.g. grey out the button for free check-in, and highlight the one where you have to pay for allocated seats. Invite you to check-in for the return trip then want to charge you as it's more than 48 hours away. And the worst thing, I wanted to add a small bag, but only by luck noticed the outbound was sold out, and it was only available for the return, but they would have let me pay; what use would that have been?! Awful company.