diff --git a/Gemfile b/Gemfile
index 19d83467..8afdd1a8 100644
--- a/Gemfile
+++ b/Gemfile
@@ -70,6 +70,12 @@ gem 'validates_hostname'
 gem 'webpacker'
 gem 'yaml_db', git: 'https://0xacab.org/sutty/yaml_db.git'
 
+# performance
+gem 'flamegraph'
+gem 'memory_profiler'
+gem 'rack-mini-profiler'
+gem 'stackprof'
+
 group :themes do
   gem 'editorial-autogestiva-jekyll-theme', require: false
   gem 'minima', require: false
@@ -87,7 +93,6 @@ group :development, :test do
   gem 'capybara', '~> 2.13'
   gem 'selenium-webdriver'
   gem 'sqlite3'
-  gem 'stackprof'
 end
 
 group :development do
@@ -106,4 +111,3 @@ group :test do
   gem 'factory_bot_rails'
   gem 'timecop'
 end
-
diff --git a/Gemfile.lock b/Gemfile.lock
index 6abb27d0..e720f393 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -158,6 +158,7 @@ GEM
       factory_bot (~> 5.1.0)
       railties (>= 4.2.0)
     ffi (1.12.2)
+    flamegraph (0.9.5)
     forwardable-extended (2.6.0)
     friendly_id (5.3.0)
       activerecord (>= 4.0.0)
@@ -289,6 +290,8 @@ GEM
     pundit (2.1.0)
       activesupport (>= 3.0.0)
     rack (2.2.2)
+    rack-mini-profiler (2.0.1)
+      rack (>= 1.2.0)
     rack-proxy (0.6.5)
       rack
     rack-test (1.1.0)
@@ -472,6 +475,7 @@ DEPENDENCIES
   email_address
   exception_notification
   factory_bot_rails
+  flamegraph
   friendly_id
   haml-lint
   hamlit-rails
@@ -484,6 +488,7 @@ DEPENDENCIES
   letter_opener
   listen (>= 3.0.5, < 3.2)
   lograge
+  memory_profiler
   mini_magick
   minima
   mobility
@@ -491,6 +496,7 @@ DEPENDENCIES
   pry
   puma
   pundit
+  rack-mini-profiler
   rails (~> 6)
   rails-i18n
   rails_warden
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 63e0077c..59ea10fc 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -9,6 +9,12 @@ class ApplicationController < ActionController::Base
   before_action :configure_permitted_parameters, if: :devise_controller?
   before_action :set_locale
 
+  before_action do
+    if current_usuarie.try(:ends_with?, '@' + ENV.fetch('SUTTY', 'sutty.nl'))
+      Rack::MiniProfiler.authorize_request
+    end
+  end
+
   # No tenemos índice de sutty, vamos directamente a ver el listado de
   # sitios
   def index