Irvue is a nifty utility that makes changing the wallpaper on your Mac an automated task. With a few tweaks in the settings options, you can set your wallpaper to change every day, every hour or every week. You can tailor the wallpaper selections by selecting Unsplash channels based off artists or keywords. This app has been a delight. It takes zero effort and is visually stunning. Download it. Check out some sample images below.