You may delete your Salams account at any time. First, open the app, go to settings, account, then scroll down to find the "Delete Account" option.  Deleting your account will delete all your matches, conversations, and profile data.

NOTE: Deleting the Salams app DOES NOT delete your profile.  You must follow the instructions above.

Want to hide yourself instead?  
Visit your "Preferences" section and turn "Discoverable" off.  This will hide you from the swipe list but keep your matches and conversations alive.