Elegant and useful
Installation was simple on my MacBook Air. Clicking the icon on the dock and choosing "Yes" to run at login placed a tiny moon at upper right in the menu bar. Since the icon is now in the menu bar, I took it off the dock. Clicking it in the menu bar rolls down a very nice display that gives me the daily moon info I want. (At top left of the roll-down, there is also a click-to-open menu where you can turn "Run at login" off if you want to.)
This elegant little app works exactly as advertised. The moon phase photos are perfect! I like to see the big daily photo at the bottom of the roll-down when I first open MoonMenu, so I keep "Preferences" closed unless needed. Click the arrow or title in different sections to open or close the sections. The tiny moon icon in the menu bar shows the moon phases too! At the top of the roll-down, be sure to click "About" for definitions and a fun link to Farmers Almanac.
Bjojones about MoonMenu