iOS segmented buttons can help you: https://developer.apple.com/library/ios/documentation/uikit/reference/UISegmentedControl_Class/Reference/UISegmentedControl.html
Or a custom one: https://www.cocoacontrols.com/controls/segmented-buttons
Question
I want the user to select his gender. Is there an iOS7 equivalent to HTML radio buttons? I find the iOS switch awkward for gender selection and a picker view overkill...
La solution
iOS segmented buttons can help you: https://developer.apple.com/library/ios/documentation/uikit/reference/UISegmentedControl_Class/Reference/UISegmentedControl.html
Or a custom one: https://www.cocoacontrols.com/controls/segmented-buttons
Autres conseils
There is no default
class to create feature like HTML radio button. But you can customize with button by showing images depends on click(On/Off).