diff --git a/.env b/.env
new file mode 100644
index 00000000..4f3fdbd2
--- /dev/null
+++ b/.env
@@ -0,0 +1 @@
+LOCALEAPP_API_KEY=er8FvnNKfLcb4g6d7oro5vFOiehLLclitbpo8lrk4g4SwfeD6d
diff --git a/.ruby-version b/.ruby-version
new file mode 100644
index 00000000..a4dd9dba
--- /dev/null
+++ b/.ruby-version
@@ -0,0 +1 @@
+2.7.4
diff --git a/Gemfile b/Gemfile
index c78400b0..28e75d1b 100644
--- a/Gemfile
+++ b/Gemfile
@@ -8,6 +8,7 @@ gemspec
 group :development, :test do
   gem 'pg', '~> 0.18'
   gem 'factory_bot'
+  gem 'localeapp'
 end
 # Declare any dependencies that are still in development here instead of in
 # your gemspec. These might include edge Rails or gems from your path or
diff --git a/Gemfile.lock b/Gemfile.lock
index 47b7eb27..5498080d 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -117,6 +117,8 @@ GEM
     delocalize (1.2.0)
       rails (>= 2)
     descriptive_statistics (2.5.1)
+    domain_name (0.5.20190701)
+      unf (>= 0.0.5, < 1.0.0)
     email_validator (2.2.2)
       activemodel
     erubi (1.10.0)
@@ -127,6 +129,7 @@ GEM
     fast_xs (0.8.0)
     ffi (1.13.1)
     formatador (0.2.5)
+    gli (2.20.1)
     globalid (0.4.2)
       activesupport (>= 4.2.0)
     guard (2.16.2)
@@ -158,6 +161,9 @@ GEM
       haml (>= 4.0, < 6)
       nokogiri (>= 1.6.0)
       ruby_parser (~> 3.5)
+    http-accept (1.7.0)
+    http-cookie (1.0.4)
+      domain_name (~> 0.5)
     httpi (2.4.5)
       rack
       socksify
@@ -169,6 +175,7 @@ GEM
       rails-dom-testing (>= 1, < 3)
       railties (>= 4.2.0)
       thor (>= 0.14, < 2.0)
+    json (2.6.1)
     jsonb_accessor (1.1.0)
       activerecord (>= 5.0)
       activesupport (>= 5.0)
@@ -188,6 +195,11 @@ GEM
     listen (3.3.3)
       rb-fsevent (~> 0.10, >= 0.10.3)
       rb-inotify (~> 0.9, >= 0.9.10)
+    localeapp (3.2.0)
+      gli
+      i18n (>= 0.7, < 2)
+      json (>= 1.7.7)
+      rest-client (>= 1.8.0)
     loofah (2.10.0)
       crass (~> 1.0.2)
       nokogiri (>= 1.5.9)
@@ -197,6 +209,9 @@ GEM
     marcel (0.3.3)
       mimemagic (~> 0.3.2)
     method_source (1.0.0)
+    mime-types (3.3.1)
+      mime-types-data (~> 3.2015)
+    mime-types-data (3.2021.0901)
     mimemagic (0.3.10)
       nokogiri (~> 1)
       rake
@@ -213,7 +228,8 @@ GEM
       i18n (>= 0.6.10, < 2)
       request_store (~> 1.0)
     nenv (0.3.0)
-    nio4r (2.5.7)
+    netrc (0.11.0)
+    nio4r (2.5.8)
     nokogiri (1.11.7)
       mini_portile2 (~> 2.5.0)
       racc (~> 1.4)
@@ -238,7 +254,7 @@ GEM
       coderay (~> 1.1)
       method_source (~> 1.0)
     public_suffix (4.0.6)
-    puma (5.3.2)
+    puma (5.5.2)
       nio4r (~> 2.0)
     racc (1.5.2)
     rack (2.2.3)
@@ -282,6 +298,11 @@ GEM
     regexp_parser (1.8.2)
     request_store (1.5.0)
       rack (>= 1.4)
+    rest-client (2.1.0)
+      http-accept (>= 1.7.0, < 2.0)
+      http-cookie (>= 1.0.2, < 2.0)
+      mime-types (>= 1.16, < 4.0)
+      netrc (~> 0.8)
     rqrcode (1.2.0)
       chunky_png (~> 1.0)
       rqrcode_core (~> 0.2)
@@ -352,6 +373,9 @@ GEM
     turbolinks-source (5.2.0)
     tzinfo (1.2.8)
       thread_safe (~> 0.1)
+    unf (0.1.4)
+      unf_ext
+    unf_ext (0.0.8)
     valvat (1.0.1)
       savon (>= 2.3.0)
     wasabi (3.6.1)
@@ -375,6 +399,7 @@ DEPENDENCIES
   factory_bot
   guard
   guard-minitest
+  localeapp
   minitest-reporters
   pg (~> 0.18)
   puma
@@ -382,4 +407,4 @@ DEPENDENCIES
   spina-shop!
 
 BUNDLED WITH
-   1.17.2
+   1.17.3
diff --git a/config/locales/de.yml b/config/locales/de.yml
index 68c6bc93..3de6ea7d 100644
--- a/config/locales/de.yml
+++ b/config/locales/de.yml
@@ -83,7 +83,7 @@ de:
         billing_street2: Straße 2
         business: 
         company: Unternehmen
-        credit_invoice: 
+        credit_invoice: Gutschrift
         date_of_birth: Geburtsdatum
         delivered_at: geliefert auf
         delivery_address: Lieferadresse