Private PIN Browser iOS

Develop an iOS browser with a standard browser functionality. I believe there are many tool kits out there to do this.
When you first install the app and use it for the first time, you’ll be asked to enter three PINs
A standard pin
A private pin
A clear pin

When you use the browser, you’ll be prompted to a PIN
The standard pin is for all regular browsing
The private pin is for browsing that you don’t want other people to see
The clear PIN wipes, the history, cookies, bookmarks, etc of both PINs are
And then put you back as if you enter the standard pin

Anytime you left the app you would be required to a PIN