Entire application runs locally: no Internet access.
No permission to the application when it is loaded from the Play Store.

You memorize in a database on your smartphone in your community: names and dates of birth (500 members maximum).
The application comes with 1500 global celebrities information: full name, date of birth, country, field of activity, short courses.

You will get the curves of biorhythms
-beginning at given date (default day)
-for community members and celebrities after selections
-a or two members of your community
-a member and a celebrity

Celebrities can be selected according
-their country of origin
-their areas of expertise (125 categories or subcategories): arts, politics, ...
-their birth dates
Searches can also be performed on a portion of the first or last name or day and month of birth.
These searches can be cumulative, eg every Canadian singers born between 01/01/1970 and 06/30/1980 ...

The biorhythm compatibility will be presented in descending order
-between a member and other members of the community
-between a member and a selection or not celebrities

Additional functions:
-the next birthdays of members of the community
-information celebrity
-calculus dates from given dates and number of days into the future or the past, number of days between two dates entered.