Excellent app; would recommend to others.

This app is very useful. I have not purchased anything in the app and it still meets the basic needs for it. With no in-app purchases, the app shows you the current phase of the moon, and the predicted phases for every day of the current month. It also shows zodiac/astrological signs for each day of the current month in a separate calendar you can click on.
The only in-app purchase I have so far come across is to access the full year calendar. As-is, you can only see moon phases for the current gregorian month. To see phase predictions for future months, you have to pay 99c for the full gregorian year calendar, where it whows how the moon phases correlate with the most popular solar calendar. I have no idea if you would have to renew that when the new year starts or not.
The moon phases seem accurate. When I compare by looking at my phone and looking up at the night sky, it seems to always be on-target. It is great when you cant remember what the moon phase is today and are indoors (or cant see the moon), and is great for planning events around the moon phase for the current month. If you are female and your menstrual cycle correlates with a certain moon phase, its an easy way to get an idea of around when your next menstruation will be - essential when trying to make plans.
In addition, it shows approximately when the moon will be visible in the sky and for how long, which is nice. It also tells you the number of days until the new moon or full moon, and how long the moon has been waxing/waning.
For anyone interested in the lunar cycle, this is a very useful app and I am personally impressed with it, especially since it is free, and the price for in-app purchases is not bad for what you are getting. I would definitely recommend this app to others.

NyghtMountain about The Moon: Calendar Moon Phases, v2.7