diff --git a/Gemfile b/Gemfile
index 42f20dd..d78616d 100644
--- a/Gemfile
+++ b/Gemfile
@@ -56,6 +56,8 @@ gem 'search_object'
 
 gem 'faraday'
 
+gem 'rqrcode'
+
 group :development do
   gem 'spring'
   gem 'spring-commands-rspec'
diff --git a/Gemfile.lock b/Gemfile.lock
index d0d8f5e..b7fec7f 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -89,6 +89,7 @@ GEM
       mime-types (>= 1.16)
       mimemagic (>= 0.3.0)
     choice (0.2.0)
+    chunky_png (1.3.8)
     coderay (1.1.1)
     coffee-rails (4.2.1)
       coffee-script (>= 2.2.0)
@@ -284,6 +285,8 @@ GEM
       mime-types (>= 1.16, < 3.0)
       netrc (~> 0.7)
     rmagick (2.16.0)
+    rqrcode (0.10.1)
+      chunky_png (~> 1.0)
     rspec (3.5.0)
       rspec-core (~> 3.5.0)
       rspec-expectations (~> 3.5.0)
@@ -423,6 +426,7 @@ DEPENDENCIES
   refile
   refile-mini_magick
   rmagick
+  rqrcode
   rspec-rails
   sass-rails
   search_object
diff --git a/app/controllers/public/conference_feedbacks_controller.rb b/app/controllers/public/conference_feedbacks_controller.rb
new file mode 100644
index 0000000..00d3ddd
--- /dev/null
+++ b/app/controllers/public/conference_feedbacks_controller.rb
@@ -0,0 +1,42 @@
+class Public::ConferenceFeedbacksController < Public::ApplicationController
+  def index
+    @conference = current_conference
+    @unrated_events = @conference.events
+                        .joins(:proposition).approved
+                        .joins('LEFT JOIN feedbacks ON feedbacks.feedback_receiving_id = events.id AND feedbacks.feedback_receiving_type = "Event"')
+                        .where('feedbacks.session_id != ? OR feedbacks.id IS NULL', session.id)
+
+    @rated_events = @conference.events
+                      .joins(:proposition).approved
+                      .joins(:feedbacks)
+                      .where(feedbacks: {session_id: session.id}).distinct
+
+  end
+
+  def new
+    if current_conference.feedbacks.where(session_id: session.id).exists?
+      @feedback = current_conference.feedbacks.where(session_id: session.id).order(updated_at: :asc).last
+    else
+      @feedback = current_conference.feedbacks.build
+    end
+  end
+
+  def create
+    @feedback = current_conference.feedbacks.build(feedback_params)
+    @feedback.ip_address = request.remote_ip
+    @feedback.session_id = session.id
+
+    if @feedback.save
+      flash[:notice] = I18n.t('public.conference_feedbacks.new.success')
+      redirect_to conference_feedbacks_path
+    else
+      render :new, status: :unprocessable_entity
+    end
+  end
+
+  private
+
+  def feedback_params
+    params.require(:feedback).permit(:author_email, :rating, :comment)
+  end
+end
diff --git a/app/controllers/public/event_feedback_qrcodes_controller.rb b/app/controllers/public/event_feedback_qrcodes_controller.rb
new file mode 100644
index 0000000..2ec1ae1
--- /dev/null
+++ b/app/controllers/public/event_feedback_qrcodes_controller.rb
@@ -0,0 +1,13 @@
+class Public::EventFeedbackQrcodesController < Public::ApplicationController
+  def show
+    event = current_conference.events.joins(:proposition).approved.find(params[:event_id])
+    @qr = RQRCode::QRCode.new(new_event_feedback_url(event_id: event.id), level: :l)
+
+    respond_to do |format|
+      format.svg do
+        render(inline: @qr.as_svg(shape_rendering: 'crispEdges', module_size: 11, fill: 'ffffff', offset: 10),
+               filename: "feedback_qr_code_#{event.id}.svg")
+      end
+    end
+  end
+end
diff --git a/app/controllers/public/event_feedbacks_controller.rb b/app/controllers/public/event_feedbacks_controller.rb
new file mode 100644
index 0000000..358d732
--- /dev/null
+++ b/app/controllers/public/event_feedbacks_controller.rb
@@ -0,0 +1,36 @@
+class Public::EventFeedbacksController < Public::ApplicationController
+  def new
+    if event.feedbacks.where(session_id: session.id).exists?
+      @feedback = event.feedbacks.where(session_id: session.id).order(updated_at: :asc).last
+    else
+      @feedback = event.feedbacks.build
+    end
+  end
+
+  def create
+    @feedback = event.feedbacks.build(feedback_params)
+    @feedback.ip_address = request.remote_ip
+    @feedback.session_id = session.id
+
+    if @feedback.save
+      flash[:notice] = I18n.t('public.event_feedbacks.new.success')
+      redirect_to conference_feedbacks_path
+    else
+      render :new, status: :unprocessable_entity
+    end
+  end
+
+  private
+
+  def feedback_params
+    params.require(:feedback).permit(:author_email, :rating, :comment)
+  end
+
+  def event
+    approved_events.find(params[:event_id])
+  end
+
+  def approved_events
+    current_conference.events.joins(:proposition).approved
+  end
+end
diff --git a/app/helpers/events_helper.rb b/app/helpers/events_helper.rb
index dcedbc0..815fc65 100644
--- a/app/helpers/events_helper.rb
+++ b/app/helpers/events_helper.rb
@@ -23,4 +23,15 @@ module EventsHelper
       end
     end
   end
+
+  def participant_names(event)
+    event.participants.map do |participant|
+      if participant.personal_profile(event.conference).present?
+        profile = participant.personal_profile(event.conference)
+        "#{profile.name}"
+      else
+        nil
+      end
+    end.compact
+  end
 end
diff --git a/app/models/conference.rb b/app/models/conference.rb
index 47eeb30..4b9532f 100644
--- a/app/models/conference.rb
+++ b/app/models/conference.rb
@@ -22,6 +22,7 @@ class Conference < ActiveRecord::Base
   has_many :participants, -> { uniq }, class_name: 'User', through: :events
   has_many :participant_profiles, class_name: 'PersonalProfile'
   has_many :slots, through: :halls
+  has_many :feedbacks, as: :feedback_receiving, dependent: :destroy
 
   accepts_nested_attributes_for :tracks, :halls, :event_types, :volunteer_teams,
                                 reject_if: :all_blank, allow_destroy: true
diff --git a/app/models/event.rb b/app/models/event.rb
index dc60733..62c18d8 100644
--- a/app/models/event.rb
+++ b/app/models/event.rb
@@ -11,6 +11,7 @@ class Event < ActiveRecord::Base
   has_many :participants, through: :approved_participations
   has_many :participants_with_personal_profiles, through: :approved_participations, source: :participant_with_personal_profile
   has_many :conflict_counts, -> { order(number_of_conflicts: :desc) }, foreign_key: :left_id
+  has_many :feedbacks, as: :feedback_receiving, dependent: :destroy
 
   belongs_to :event_type
 
diff --git a/app/models/feedback.rb b/app/models/feedback.rb
new file mode 100644
index 0000000..37517db
--- /dev/null
+++ b/app/models/feedback.rb
@@ -0,0 +1,13 @@
+class Feedback < ActiveRecord::Base
+  belongs_to :feedback_receiving, polymorphic: true
+
+  validates :rating, presence: true, inclusion: {in: [2, 3, 4, 5 ,6]}
+
+  before_create :destroy_older_feedbacks_by_the_session
+
+  private
+
+  def destroy_older_feedbacks_by_the_session
+    feedback_receiving.feedbacks.where(session_id: session_id).destroy_all
+  end
+end
diff --git a/app/views/api/events/index.jbuilder b/app/views/api/events/index.jbuilder
index 543b195..a53ef36 100644
--- a/app/views/api/events/index.jbuilder
+++ b/app/views/api/events/index.jbuilder
@@ -9,5 +9,7 @@
     json.event_type_id event.event_type_id
     json.track_id event.track_id
     json.participant_user_ids event.participations.map(&:participant_id)
+    json.feedback_url new_event_feedback_url(event_id: event.id)
+    json.feedback_qr_code_url event_feedback_qr_code_url(event_id: event.id, format: :svg)
   end
 end
diff --git a/config/deploy.rb b/config/deploy.rb
index ceff646..eec7549 100644
--- a/config/deploy.rb
+++ b/config/deploy.rb
@@ -32,7 +32,7 @@ set :linked_dirs, fetch(:linked_dirs, []).push('log', 'tmp/uploads', 'tmp/pids',
 # set :default_env, { path: "/opt/ruby/bin:$PATH" }
 
 # Default value for keep_releases is 5
-# set :keep_releases, 5
+set :keep_releases, 10
 
 set :rvm_ruby_version, '2.2.2'
 
diff --git a/config/initializers/mime_types.rb b/config/initializers/mime_types.rb
index dc18996..f4c73f9 100644
--- a/config/initializers/mime_types.rb
+++ b/config/initializers/mime_types.rb
@@ -2,3 +2,5 @@
 
 # Add new mime types for use in respond_to blocks:
 # Mime::Type.register "text/richtext", :rtf
+
+Mime::Type.register "image/svg+xml", :svg
diff --git a/config/locales/bg.yml b/config/locales/bg.yml
index 88cf97d..f012191 100644
--- a/config/locales/bg.yml
+++ b/config/locales/bg.yml
@@ -1,4 +1,20 @@
 bg:
+  public:
+    event_feedbacks:
+      new: &new_feedbacks_bg
+        feedback_for: Оценяване на „%{title}“
+        submit: Изпрати
+        success: Оценката беше изпратена успешно
+    conference_feedbacks:
+      new: *new_feedbacks_bg
+      index:
+        feedback_for_the_conference: Оценяване на конференцията
+        general_feedback_for: Оценете цялостно %{title}
+        change_general_feedback_for: Преоценете цялостно %{title}
+        feedback_for: Оценете „%{title}“
+        change_feedback_for: Преоценете „%{title}“
+        by: от %{authors}
+        feedback_incentive: Бихме били благодарни, ако споделите с нас мнението си за конференцията и събитията в нея.
   management:
     volunteers:
       index:
@@ -103,6 +119,10 @@ bg:
       title: "Преглед на %{model}"
   activerecord:
     attributes:
+      feedback:
+        author_email:  E-mail
+        rating: Оценка
+        comment: Коментар
       participation:
         participant: Участник
         approved: Потвърдено от участника
@@ -208,6 +228,9 @@ bg:
             volunteer_teams:
               invalid_volunteer_team: "невалиден екип от доброволци"
     models:
+      feedback:
+        one: Оценка
+        other: Оценки
       participation:
         one: Участие
         other: Участия
@@ -372,6 +395,10 @@ bg:
           vegetarian: Вегетарианец
           vegan: Веган
     hints:
+      feedback:
+        author_email: Адресът на електронната ви поща, ако счетете за нужно
+        rating: Посочете оценката си
+        comment: Тук може да изразите по-подробно мнението си
       conference:
         description: "Описание на конференцията"
         email: Email на организаторския екип
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 1a48fdb..13a76ad 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1,4 +1,20 @@
 en:
+  public:
+    event_feedbacks:
+      new: &new_feedbacks_en
+        feedback_for: Rating '%{title}'
+        submit: Submit
+        success: The feedback was submitted successfully
+    conference_feedbacks:
+      new: *new_feedbacks_en
+      index:
+        feedback_for_the_conference: Feedback for the conference
+        general_feedback_for: Submit general feedback for "%{title}"
+        change_general_feedback_for: Resubmit general feedback for "%{title}"
+        feedback_for: Submit feedback for "%{title}"
+        change_feedback_for: Resubmit feedback for "%{title}"
+        by: by %{authors}
+        feedback_incentive: We would be happy to receive your feedback about the conference and its events.
   abstract: Abstract
   helpers:
     submit:
@@ -29,6 +45,10 @@ en:
       title: Viewing %{model}
   activerecord:
     attributes:
+      feedback:
+        author_email:  E-mail
+        rating: Rating
+        comment: Comment
       conference:
         description: Description
         email: E-mail
@@ -271,6 +291,10 @@ en:
           vegetarian: Vegetarian
           vegan: Vegan
     hints:
+      feedback:
+        author_email: "Your E-mail address if you'd like to share it with us"
+        rating: Select your rating for the event
+        comment: Express your opinion in greater detail here
       conference:
         description: Conference description
         email: Orga team email
diff --git a/config/routes.rb b/config/routes.rb
index d0663bb..56de69a 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -5,12 +5,15 @@ Rails.application.routes.draw do
     root to: 'home#index'
     resource :personal_profile, path: 'profile'
     resources :events do
+      resources :feedback, controller: 'event_feedbacks', only: [:new, :create]
+      resource :feedback_qr_code, controller: 'event_feedback_qrcodes', only: :show
       member do
         get :confirm
       end
     end
     resources :volunteers
     resources :volunteer_teams, only: [:index]
+    resources :feedback, as: 'conference_feedbacks', controller: 'conference_feedbacks', only: [:new, :create, :index]
   end
 
   namespace :api do
diff --git a/db/migrate/20171022182011_create_feedbacks.rb b/db/migrate/20171022182011_create_feedbacks.rb
new file mode 100644
index 0000000..606dbe7
--- /dev/null
+++ b/db/migrate/20171022182011_create_feedbacks.rb
@@ -0,0 +1,14 @@
+class CreateFeedbacks < ActiveRecord::Migration
+  def change
+    create_table :feedbacks do |t|
+      t.references :feedback_receiving, index: {name: :feedbacks_polymorphic_index}, polymorphic: true, null: false
+      t.string :author_email
+      t.integer :rating, null: false
+      t.text :comment, null: false
+      t.string :ip_address
+      t.string :session_id, index: true
+
+      t.timestamps null: false
+    end
+  end
+end
diff --git a/lib/initfest/views/public/conference_feedbacks/index.html.slim b/lib/initfest/views/public/conference_feedbacks/index.html.slim
new file mode 100644
index 0000000..5a36d9b
--- /dev/null
+++ b/lib/initfest/views/public/conference_feedbacks/index.html.slim
@@ -0,0 +1,25 @@
+- content_for(:title) { t('.feedback_for_the_conference') }
+
+h1.entry-title = t('.feedback_for_the_conference')
+
+p = t('.feedback_incentive')
+
+ul
+  - if @conference.feedbacks.where(session_id: session.id).exists?
+    li = link_to t('.change_general_feedback_for', title: @conference.title), new_conference_feedback_path
+  - else
+    li = link_to t('.general_feedback_for', title: @conference.title), new_conference_feedback_path
+
+ul
+  - @unrated_events.each do |event|
+    li
+      = link_to t('.feedback_for', title: event.title), new_event_feedback_path(event_id: event.id)
+      - if participant_names(event).any?
+        =< t('.by', authors: participant_names(event).join(', '))
+
+ul
+  - @rated_events.each do |event|
+    li
+      = link_to t('.change_feedback_for', title: event.title), new_event_feedback_path(event_id: event.id)
+      - if participant_names(event).any?
+        =< t('.by', authors: participant_names(event).join(', '))
diff --git a/lib/initfest/views/public/conference_feedbacks/new.html.slim b/lib/initfest/views/public/conference_feedbacks/new.html.slim
new file mode 100644
index 0000000..3143800
--- /dev/null
+++ b/lib/initfest/views/public/conference_feedbacks/new.html.slim
@@ -0,0 +1,14 @@
+- content_for(:title) { t('.feedback_for', title: @feedback.feedback_receiving.title) }
+
+h1.entry-title = t('.feedback_for', title: @feedback.feedback_receiving.title)
+
+= simple_form_for @feedback, wrapper: :default, url: conference_feedbacks_path, method: :post do |f|
+  = f.error_notification
+
+  .form-inputs
+    = f.input :author_email, autofocus: true
+    = f.input :rating, collection: [2, 3, 4, 5, 6], as: :radio_buttons, include_blank: false, wrapper: :default
+    = f.input :comment
+
+  .form-actions
+    = f.button :submit, t('.submit')
diff --git a/lib/initfest/views/public/event_feedbacks/new.html.slim b/lib/initfest/views/public/event_feedbacks/new.html.slim
new file mode 100644
index 0000000..e4cdc2d
--- /dev/null
+++ b/lib/initfest/views/public/event_feedbacks/new.html.slim
@@ -0,0 +1,14 @@
+- content_for(:title) { t('.feedback_for', title: @feedback.feedback_receiving.title) }
+
+h1.entry-title = t('.feedback_for', title: @feedback.feedback_receiving.title)
+
+= simple_form_for @feedback, wrapper: :default, url: event_feedback_index_path, method: :post do |f|
+  = f.error_notification
+
+  .form-inputs
+    = f.input :author_email, autofocus: true
+    = f.input :rating, collection: [2, 3, 4, 5, 6], as: :radio_buttons, include_blank: false, wrapper: :default
+    = f.input :comment
+
+  .form-actions
+    = f.button :submit, t('.submit')
diff --git a/lib/initfest/views/public/event_feedbacks/show.html.slim b/lib/initfest/views/public/event_feedbacks/show.html.slim
new file mode 100644
index 0000000..3603360
--- /dev/null
+++ b/lib/initfest/views/public/event_feedbacks/show.html.slim
@@ -0,0 +1 @@
+p Hello