Joseph Hinson

Have you ever launched a website with search engines blocked because you forgot to switch the privacy settings in your dev environment?
This plugin was developed to remind me to do that. Privacy Notice simply adds a notice in the admin bar if search engines are not enabled. This plugin helps you check yo’self before you wreck yo’self. If the label is orange, change it before you launch that site!
If you’ve turned search engines on, the notice goes away entirely. Never to bother you again if you haven’t deactivated.
There are no settings, and it doesn’t modify your database.
<h3>Arbitrary section</h3>
You may provide arbitrary sections, in the same format as the ones above. This may be of use for extremely complicated 
plugins where more information needs to be conveyed that doesn’t fit into the categories of “description” or 
“installation.” Arbitrary sections will be shown below the built-in sections outlined above.

Privacy Notice

This plugin simply adds a notice in the admin bar if search engines are not enabled. This plugin helps you check yo'self before you wreck yo&#039 …

Marat Nepomnyashy

Overview:
At the time of this writing, the latest version of WordPress, version 4.7, 
 has functionality to discourage search engines from indexing the whole site, 
 but not functionality to discourage search engines from indexing only certain 
 specific pages and posts of the site.
Robots Meta Whiz is a WordPress plugin that allows site administrators to 
 deploy custom meta robots tags to discourage search engines from indexing, 
 following links from, caching, indexing images from, and / or have 
 additional custom restrictions on only for certain specifically-designated 
 pages and posts.
It is an easy way to discourage search engines from indexing only specific 
 pages / posts.
This only applies to search engine robots, and will not effect the site’s 
 local search functionality.
Technical summary:
Plugin works by hooking-in special logic into the action ‘wp_head’ to inject 
 the tag <code><meta name='robots' content='...'></code> with restriction directives for 
 the specified pages and posts.
Official project URLs:
https://wordpress.org/plugins/robotswhiz 
 https://github.com/maratbn/RobotsWhiz

Robots Meta Whiz

Easy way to discourage search engines from indexing only specific pages / posts with custom meta tags.

Privacy Notice vs Robots Meta Whiz