Mobile Apps

I recently began to research regarding a revolutionary idea for an app that applies to numerology, but have no idea where to start. I am the author of Behind the Numbers and creator of SpiritualSeals, which is the numerology equivalent to the zodiac designs recognized by astrology.
My approach to numerology has never been done, and has unlimited marketing potential.
I would like to link this app to my spreadshirt store, in which users can have their Seal printed on a range of products.
All I know at this point, is the app will require a numerology calculator, but beyond this, I am lost.

I am seeking guidance and potential investors.
I have no idea what is involved in creating an app except it requires coding…which is too complex for me, in that my expertise is limited to desktop publishing.