diff --git a/README.md b/README.md
index 458169c00..7ec3ac904 100644
--- a/README.md
+++ b/README.md
@@ -11,7 +11,11 @@
 Kiwix is an offline reader for Web content. One of its main purposes
 is to make Wikipedia available offline. This is done by reading the
 content of a file in the ZIM format, a highly compressed open format
-with additional metadata. This is the version for Android.
+with additional metadata.
+
+This is the version for Android, with support versions ranging from 5
+to 13 (like [mentioned
+here](https://github.com/kiwix/kiwix-android/blob/develop/buildSrc/src/main/kotlin/Config.kt)).
 
 Kiwix Android is written in [Kotlin](https://kotlinlang.org/)
 
diff --git a/buildSrc/src/main/kotlin/Config.kt b/buildSrc/src/main/kotlin/Config.kt
index 573c8237f..143f6f8f6 100644
--- a/buildSrc/src/main/kotlin/Config.kt
+++ b/buildSrc/src/main/kotlin/Config.kt
@@ -19,8 +19,12 @@
 import org.gradle.api.JavaVersion
 
 object Config {
-  const val compileSdk = 33
-  const val minSdk = 21
-  const val targetSdk = 33
+
+  // Here is a list of all Android versions with their corresponding API
+  // levels: https://apilevels.com/
+  const val compileSdk = 33 // SDK version used by Gradle to compile our app.
+  const val minSdk = 21 // Minimum SDK (Minimum Support Device) is 21 (Android 5.0 Lollipop).
+  const val targetSdk = 33 // Target SDK (Maximum Support Device) is 33 (Android 13).
+
   val javaVersion = JavaVersion.VERSION_1_8
 }