Codeies

Elite User ratings allows your visitors to submit user reviews with a 1-5 star rating on your website, similar to the way you would on TripAdvisor or Yelp. The plugin provides blocks, shortcodes, and widgets, along with full documentation.
You can pin your best reviews so that they are always shown first, require approval before new review submissions are published, require visitors to be logged-in in order to write a review, send custom notifications on a new submission, and a lot more!
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How to use 
[codeies_wmr_ratings] 
This shortcode prints all ratings & comments of single user! 
Attributes 
perpage Optional , Required if shortcode is not placed in user profile page 
pagination Optional , Required if shortcode is not placed in user profile page 
displayslider,stars Default is slider 
user_id Optional , Required if shortcode is not placed in user profile page
[codeies_wmr_profile] 
This shortcode renders the rating form 
Attributes 
user_id Optional , Required if shortcode is not placed in user profile page
[codeies_wmr_average_rating] 
This shortcode displays overall average rating of current profile 
Attributes 
user_id Optional , Required if shortcode is not placed in user profile page 
return What you want to get from shortcode , Default is “box” Which will return the average rating box with number of reviewers . Pass “average” to get overall average, “stars” to get Average rating in stars and “total_ratings” to get number of reviews
[codeies_wmr_ratingpage_link] 
This shortcode generates hyperlink of a current profile rating page 
Attributes 
text Text to be displayed in hyperlink, Default is “View all ratings” 
user_id Optional , Required if shortcode is not placed in user profile page

Codeies – Elite user Ratings

Elite User ratings allows your visitors to submit user reviews with a 1-5 star rating on your website

pixelgrade

vlad.olaru

George Olaru

Andrei Lupu

raduconstantin

Easily add a rating system to your comments area and start displaying reviews from your visitors.

Comments Ratings

ただ、平均値表示などの機能がないため、その点で不便に感じました。
欲を言うならば、Comment Star Rating（Matometaru）のように、post metaにデータが登録されて、細かい表示がされるとより良いと感じました。

However, I felt inconvenient at that point because there was no function such as average display.
If you say greed, like Comment Star Rating (Matometaru), I felt that it would be better if data were registered in post meta and detailed display was done.

軽量で良いプラグインです（ Lightweight and good plugin）

Convert comments into reviews for your visitors.

Codeies – Elite user Ratings vs Comments Ratings