The idea isn't to read on your phone while you're playing. The idea is to do when you are not playing since that info isn't needed to understand what's going on.
But if you have a few minutes to kill you can read some cards and get to know some extra info.
You don't need to read those to understand what's going on. It's extra stuff for those who want to know more. I never said you needed them so you're comparison with Halo 4 doesn't make sense.
Expect the cards fill out information bout the factions which isn't in the game then? Seems pretty story essential. Why are you so against having it in the game anyway, they could have both you know and have the best of both. You're acting like you've never read anything on your TV before.
Its not the same. The app actuall feels tied to the game deeply. The is much more to be found in it than the lore.
Isn't it just a stat viewer as well? Something that's already in the game anyway.