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by sghiassy 3249 days ago
Not sure what you mean by the question?

I built the full stack by hand. The iOS is Obj-C and the backend is NodeJS/MySQL.

Basically, the MySQL DB has checkin data (provided by users or from social media networks) pivoted on metadata (male, female, age) and then passed to a custom visualization algorithm on the mobile device.

Happy to answer any other questions.