diff --git a/app/controllers/apps_controller.rb b/app/controllers/apps_controller.rb
index 93ae780..6cdd8c5 100644
--- a/app/controllers/apps_controller.rb
+++ b/app/controllers/apps_controller.rb
@@ -52,16 +52,7 @@ class AppsController < InheritedResources::Base
 
   protected
     def collection
-      @apps ||= begin
-        apps = end_of_association_chain.all
-
-        # Sort apps by number of unresolved errs, then problem counts.
-        apps.sort do |a, b|
-          (b.unresolved_count <=> a.unresolved_count).nonzero? ||
-          (b.problem_count <=> a.problem_count).nonzero? ||
-          a.name <=> b.name
-        end
-      end
+      @apps ||= end_of_association_chain.all.sort
     end
 
     def initialize_subclassed_issue_tracker
diff --git a/app/models/app.rb b/app/models/app.rb
index fc5095b..951a708 100644
--- a/app/models/app.rb
+++ b/app/models/app.rb
@@ -1,6 +1,7 @@
 class App
   include Mongoid::Document
   include Mongoid::Timestamps
+  include Comparable
 
   field :name, :type => String
   field :api_key
@@ -177,6 +178,13 @@ class App
     @problem_count ||= problems.count
   end
 
+  # Compare by number of unresolved errs, then problem counts.
+  def <=>(other)
+    (other.unresolved_count <=> unresolved_count).nonzero? ||
+    (other.problem_count <=> problem_count).nonzero? ||
+    name <=> other.name
+  end
+
   protected
 
     def store_cached_attributes_on_problems
diff --git a/spec/models/app_spec.rb b/spec/models/app_spec.rb
index e55f037..76f7933 100644
--- a/spec/models/app_spec.rb
+++ b/spec/models/app_spec.rb
@@ -23,6 +23,31 @@ describe App do
     end
   end
 
+  describe '<=>' do
+    it 'is compared by unresolved count' do
+      app_0 = stub_model(App, :name => 'app', :unresolved_count => 1, :problem_count => 1)
+      app_1 = stub_model(App, :name => 'app', :unresolved_count => 0, :problem_count => 1)
+
+      app_0.should < app_1
+      app_1.should > app_0
+    end
+
+    it 'is compared by problem count' do
+      app_0 = stub_model(App, :name => 'app', :unresolved_count => 0, :problem_count => 1)
+      app_1 = stub_model(App, :name => 'app', :unresolved_count => 0, :problem_count => 0)
+
+      app_0.should < app_1
+      app_1.should > app_0
+    end
+
+    it 'is compared by name' do
+      app_0 = stub_model(App, :name => 'app_0', :unresolved_count => 0, :problem_count => 0)
+      app_1 = stub_model(App, :name => 'app_1', :unresolved_count => 0, :problem_count => 0)
+
+      app_0.should < app_1
+      app_1.should > app_0
+    end
+  end
 
   context 'being created' do
     it 'generates a new api-key' do
--
libgit2 0.21.2