By turning your account to private, you allow only your Dinngo friends to see your profile.
To set your account private please:
Step1 Tap the people icon in the tab bar to get to your profile tab
Step2 Tap the setting icon at upper-right corner
Step3 Tap Privacy in the second section (Private Info)
Step4 Switch the private account button on (And you can also check your hidden posts on this page by tapping "Hidden posts")
Refer to below screenshots and you'll be all set!