I really wonder who designed, tested and approved the Warhammer 40k app.
As suspected the servers were a bit overloaded at launch, so it needed a bit of time before the ‘confirmation’ links were sent.
Not a big deal, because that is pretty much par for the course when popular websites launch.

The real kicker … once you do sign in you are greeted with one of those “welcome here” popups that (some) apps use.
However on my phone that popup is bigger than the screen, so the button to close it is not available …

And then there’s this review :

The Goonhammer Review: Warhammer 40,000 – The App

What the heck GW?

Are you seriously telling me that this app is simply a big library for all of your books with a minimalistic search engine ?

And that’s before you consider the spelling-errors (surely those aren’t in the source material ?) or the implications that the core-rules are hosted on Google Drive.
I hope the reviewer got that bit wrong and it simply downloaded the booklet to his own Google Drive …
However that still makes me wonder why they are in a document inside this “app” at all.

If it weren’t for copyright issues (and the stupendous amount of work of adding all data) I’d be tempted to build my own webpage/app thingy, because the core design of this thing is flawed.

It is like they simply told an intern to build a digital library for all of their books that could be monetized.
I get it is hard to organize the data into a single coherent database when you’ve got a dozen versions of unit stats spread across several books, but that is supposed to be the one thing that solves the need to browse through half a dozen of codexes just to build a single army.

/rant …

tl;dr; : a good idea ruined by bad design choices and an obvious ‘release now / fix later’ mentality.