How to establish an app like prepladder?

How to establish an app like prepladder??plz help.(plz comment in English and interested rich people can express your interest below and will be considered as partner in futurešŸ˜Š)

See above commentsā€¦ even in a post to develop a similar app someone is selling prepladder appā€¦ thatā€™s the peak of marketing

Donā€™t know why people laughing at this serious post