The home feed tuner gives you a view of all your boards, the last 3 months of your activity history, and the topics you follow. You can turn on or off any of these to improve your home feed recommendations.
Recommendations are automatically turned off for archived boards and secret boards. Your secret boards are labeled with a lock in the home feed tuner and you can turn recommendations from your secret boards on at any time.
Turning on or off recommendations won’t affect the ads you see on your home feed. You can limit the information Pinterest uses to pick which ads you see.
Switch between the Boards, History, or Topics tabs to turn off recommendations based on any boards or unfollow any topics used for recommendations. You can turn off recommendations from your recent activity in the History tab by selecting the Pins you don’t want to get recommendations from.