I just got my Labradar today. I installed the app, I can't find how to control all functions like you said. All I see is the ARM function, I'm using a S7 Droid.
Am I missing something?
Welcome to the app. As far as I can tell, they designed it for the first iPhone 10 years ago, and only recently built a chronograph to use it. It's utterly horrific by 2019 standards, but in reality, once you lower your expectations to "wireless remote", it's not all that bad.
If it's anything like the iPhone app, you need to swipe right up at the top left corner (orange LabRadar symbol) to get to the settings page (distances, trigger, rifle/pistol, etc). In the main app screen, the only thing you can do is arm the unit, look at shots and strings, and add a new string.
There's a + button up at the top for new strings. Be aware you cannot reoccupy an old string. Once you create a new one, you can't go back and keep shooting in a previous string.
There's a circular arrow icon like recycling, which will refresh the connection and update the data.
I believe there's "Shot lists", "String Lists", and maybe "Details". Those are where you can review data you already collected.
Basically, the app is terrible, but it will allow you to avoid the even more terrible button pushing. This means you can align the unit, and not jiggle it off target with button pushing.
As I mentioned though, horrific app and interface included, this puppy is still the best consumer chrony on the market in my opinion. Just a little embarrassing that a $550 tool doesn't come with modern support technology.