diff --git a/README.md b/README.md
index 1f82571..1dbd3bc 100644
--- a/README.md
+++ b/README.md
@@ -30,6 +30,8 @@ Updeto.shared.isAppUpdated { result in
         // Do something 
     case .noResults:
         // Do something
+    case .developmentOrBeta:
+        // Do something
     }
 }
 ```
diff --git a/Sources/Updeto/Updeto.swift b/Sources/Updeto/Updeto.swift
index 18a9aa5..f815cc1 100644
--- a/Sources/Updeto/Updeto.swift
+++ b/Sources/Updeto/Updeto.swift
@@ -231,9 +231,15 @@ struct AppStoreLookup: Decodable {
 // MARK: - AppstoreLookupResult
 
 public enum AppStoreLookupResult: Equatable {
+    /// State that means the app is currently updated
     case updated
+    /// State that means the app is currently outdated
     case outdated
+    /// State that means installed version is higher than latest on AppStore.
+    /// This is possible if the installed version is a development / beta build (eg. Xcode, Testflight).
+    /// Worst case scenario is that the response from apple is outdated, which is unlikely to happen.
     case developmentOrBeta
+    /// State that means that the bundleId query returned no results
     case noResults
 
     /// Lookup Result description.