I need to summit my game to the appstore and all I need now is screenshots. Apple requires exact measurements of pixels. I cant screenshot it on unity remote because the qualities are too bad. I tried using the grab(snipping) tool but apple requires exact pixel measurements. Does anyone have any ideas how to take a screenshot with exact measurement?
One way is to change the game resolution, play the game on your computer and take screenshots using the Unity method CaptureScreenshot:
http://docs.unity3d.com/ScriptReference/Application.CaptureScreenshot.html
Other than that, you need to change your screenshots in a image editor of some kind, to get it in the right size and resolution.
This is still a problem nowadays because to use Application.CaptureScreenshot you need a monitor with that resolution.
Multi Screenshots Suite asset solves this problem: Unity Asset Store - The Best Assets for Game Making
I developed this asset, so let me know if you have any question.