diff --git a/change_app_id.rb b/change_app_id.rb
new file mode 100755
index 000000000..e8ea4c631
--- /dev/null
+++ b/change_app_id.rb
@@ -0,0 +1,31 @@
+#!/usr/bin/env ruby
+
+require 'rexml/document'
+
+def rename(app_id = "quantifiedself")
+  server_name = app_id + ".appspot.com"
+  # strings resource file update
+  file = File.read("Paco/res/values/strings.xml")
+  xml = REXML::Document.new(file)
+  server = xml.elements["resources"].elements.find {|e| e.attributes["name"] == "server" }
+  server.text = server_name
+
+  about_web_url = xml.elements["resources"].elements.find {|e| e.attributes["name"] == "about_weburl" }
+  about_web_url.text = server_name + "/Main.html"
+  file = File.open("Paco/res/values/strings.xml", 'w+') { |f| f.puts xml }
+
+  # server appid update
+  file = File.read("Paco-Server/war/WEB-INF/appengine-web.xml")
+  xml = REXML::Document.new(file)
+  current_server_app_id =  xml.elements["appengine-web-app"].elements["application"]
+  xml.elements["appengine-web-app"].elements["application"].text = app_id
+  file = File.open("Paco-Server/war/WEB-INF/appengine-web.xml", 'w+') { |f| f.  puts xml }
+end
+
+if __FILE__ == $0
+  if ARGV.length == 0
+    puts "need an appid name"
+  else
+    rename(ARGV[0])
+  end
+end
diff --git a/increment_version.rb b/increment_version.rb
new file mode 100644
index 000000000..745ff1c2e
--- /dev/null
+++ b/increment_version.rb
@@ -0,0 +1,33 @@
+#!/usr/bin/env ruby
+
+require 'rexml/document'
+
+# manifest update
+file = File.read("Paco/AndroidManifest.xml")
+xml = REXML::Document.new(file)
+current_version = doc.elements["manifest"].attributes["android:versionCode"].to_i
+doc.elements["manifest"].attributes["android:versionCode"] = "#{current_version + 1}"
+
+major_version,minor_version,dot_version = doc.elements["manifest"].attributes["android:versionName"].split(".").map { |s| s.to_i }
+new_dot_version = dot_version + 1
+new_version_name = "#{major_version}.#{minor_version}.#{new_dot_version}"
+doc.elements["manifest"].attributes["android:versionName"] = new_version_name
+File.open("Paco/AndroidManifest.xml", 'w+') { |f|  f.puts doc }
+
+# strings resource file update
+file = File.read("Paco/res/values/strings.xml")
+xml = REXML::Document.new(file)
+version_element = xml.elements["resources"].elements.find {|e| e.attributes["name"] == "version" }
+version_element.text = new_version_name
+file = File.open("Paco/res/values/strings.xml", 'w+') { |f| f.puts xml }
+
+
+# server version updating
+file = File.read("Paco-Server/war/WEB-INF/appengine-web.xml")
+xml = REXML::Document.new(file)
+current_server_version =  xml.elements["appengine-web-app"].elements["version"].text.to_i
+xml.elements["appengine-web-app"].elements["version"].text = "#{current_server_version + 1}"
+file = File.open("Paco-Server/war/WEB-INF/appengine-web.xml", 'w+') { |f| f.puts xml }
+
+# server - Android updatechecker version number
+File.open("Paco-Server/war/version", 'w+') { |f| f.puts new_dot_version }