So I launch the app. Top left button makes sense, it turns the flash on and off. Top button.... unsure, it's a ghost? Some kind of menu? So I push it, am given a screen with a help button, a picture of a trophy, and a settings icon. Looks like this is the app's "system menu" but also the place where I can managed friends, that makes sense then. Pop back down to main screen, Bottom left looks like messages, so I push that and... it's a massive, unsortable list. I scroll down and see all sorts of different icons. Probably the non-filled icons means the content is "read" but there's a red square, a purple square, a blue square with a triangle (probably chat yea?), a grey arrow, a red arrow. Some filled in, some not, totally unsorted, and it looks like message send/receives are mixed in with "new friend added" messages. So that's a mess.

So now I pop into the mysterious "pyramid of three little circles" menu. It's.. news? "Recent updates" is another list of... friend... stuff... probably Snapchat's answer to Instagram Stories or whatever. More mysterious icons in the top right (other than search, that's obvious).

When I take a picture there's an x (obvious), a postit note, a T (obvious), a... pencil (pretty obvious if so), a timer, a download icon, and a square with a plus (no idea). Also a "send" icon. Throughout all this navigation, I'm lagging, hanging, etc.

Use case: A coworker says "add me on snapchat, here I've got my QR code open on my phone." Starting from the main menu I enter the "settings", click "add friends." "Add by Snapcode" looks right, oh, no, I need to take a photo, it won't actively scan for QR.

Things like that.