diff --git a/app/models/environment.rb b/app/models/environment.rb
index 7ad36f1d80c..66c96d0f586 100644
--- a/app/models/environment.rb
+++ b/app/models/environment.rb
@@ -45,6 +45,7 @@ class Environment < ActiveRecord::Base
       .to_sql
     order(Gitlab::Database.nulls_first_order("(#{max_deployment_id_sql})", 'ASC'))
   end
+  scope :in_review_folder, -> { where(environment_type: "review") }
 
   state_machine :state, initial: :available do
     event :start do
diff --git a/changelogs/unreleased/zj-review-apps-usage-data.yml b/changelogs/unreleased/zj-review-apps-usage-data.yml
new file mode 100644
index 00000000000..7d224d0fc32
--- /dev/null
+++ b/changelogs/unreleased/zj-review-apps-usage-data.yml
@@ -0,0 +1,4 @@
+---
+title: Add review apps to usage metrics
+merge_request: 12185
+author:
diff --git a/lib/gitlab/usage_data.rb b/lib/gitlab/usage_data.rb
index bcba2e3e1b6..38dc82493cf 100644
--- a/lib/gitlab/usage_data.rb
+++ b/lib/gitlab/usage_data.rb
@@ -27,6 +27,7 @@ module Gitlab
             deploy_keys: DeployKey.count,
             deployments: Deployment.count,
             environments: Environment.count,
+            in_review_folder: Environment.in_review_folder.count,
             groups: Group.count,
             issues: Issue.count,
             keys: Key.count,
diff --git a/spec/lib/gitlab/usage_data_spec.rb b/spec/lib/gitlab/usage_data_spec.rb
index b47e1b56fa9..3c7c7562b46 100644
--- a/spec/lib/gitlab/usage_data_spec.rb
+++ b/spec/lib/gitlab/usage_data_spec.rb
@@ -37,6 +37,7 @@ describe Gitlab::UsageData do
         deploy_keys
         deployments
         environments
+        in_review_folder
         groups
         issues
         keys