Standard Creepiness Rule xkcd for Android
Like astrological matches or numerology matches. Even a distance dating number (how far apart you are and percent chance of success) or maybe best time for a date, ( lunch, dinner, late dinner) or day of the week to go on a date based on lunar cycles. You could use a combination of these things and make a fun little app that gives people a little more activity, and some fun results. They say long distance relationships don't work , so you could have percent chance of success based on miles or km apart....
by X####:
I couldn'tmean by date