You can make your profile private so no one can see your posts or rounds (without your permission).
To make your profile private, do the following:
- Tap the 'Me/Profile' tab;
- Tap the Settings icon on the top-right;
- Tap on 'Profile Settings';
- Scroll and turn the Hide my activity toggle 'On'.
- When your profile is private, other users will not be able to see your activity but can still request to follow you, and it is your option to grant their request or not.