Put it on your home screen.
Most people open this while they are already out — deciding whether the room they are standing in is the right one. An icon on the home screen is a tap; a browser, a tab and a typed address is not.
You get the map one tap away, full screen, with no browser bar eating the top of the phone. You do not get offline. Nothing is stored on your phone: every figure is fetched when you open it, because a rake we saved yesterday would show up wearing today’s date. With no signal the app says so and shows you nothing.
Point your phone at this.
Open the camera, hold it up, tap the link that appears. It brings you back to this page on the phone, where the instructions are the ones for the phone you are holding — which is where the install actually happens.
Or type it: checkitdown.com/install
There is no desktop version to install and there is deliberately no button here for one. The point of the app is having the map one tap away while you are standing in a room deciding whether to sit down, and no part of that happens at a desk.
Not the device you are holding? Read the steps for iPhone or iPad, Android, or a computer.