So I downloaded Waypoint to my iPhone and bought Atlas. It seems pretty neat but not very practical as it shows you where literally every weapon is. That's good for newer players but more experienced people only care about power weapons and as far as I can tell there is no way to filter weapons out. Even then, what matters more is timing them which Atlas doesn't seem to warn you about at all. Also it's very zoomed in on the iPhone preventing you from getting a global view of the map. I tried it out on my iPad and it was better but the app is asking me to rebuy Atlas. Is that by design? Most apps I have used content within it is tied to an account (in this case I would have assumed the Live ID) but that doesn't seem to be the case.
EDIT: Ok weird, just started up a game on Powerhouse and now it seems like it is only showing me power weapons (Hammer, Focus, Rockets, Shotgun and Grenade Launcher). I don't think any settings changed though. Regardless, it's much better like this.