diff --git a/configs/phoenix/phoenix-overrides.cfg b/configs/phoenix/phoenix-overrides.cfg
index aa16f35e..70471be8 100644
--- a/configs/phoenix/phoenix-overrides.cfg
+++ b/configs/phoenix/phoenix-overrides.cfg
@@ -2,6 +2,7 @@
 
 // Get constants
 /// These are set here instead of `ironfox.cfg` so that they are always parsed as early as possible)
+const IRONFOX_APP_ID =                  getPref("browser.ironfox.const.IRONFOX_APP_ID");
 const IRONFOX_APP_NAME =                getPref("browser.ironfox.const.IRONFOX_APP_NAME");
 const IRONFOX_APP_NAME_PRETTY =         getPref("browser.ironfox.const.IRONFOX_APP_NAME_PRETTY");
 const IRONFOX_BUGS_URL =                getPref("browser.ironfox.const.IRONFOX_BUGS_URL");
diff --git a/patches/gecko-overlay/ironfox/android/core/build.gradle b/patches/gecko-overlay/ironfox/android/core/build.gradle
index cffa67d9..76b0c586 100644
--- a/patches/gecko-overlay/ironfox/android/core/build.gradle
+++ b/patches/gecko-overlay/ironfox/android/core/build.gradle
@@ -17,6 +17,7 @@ android {
     consumerProguardFiles "proguard-rules.pro"
 
     // Set constants
+    buildConfigField 'String', "IRONFOX_APP_ID",                    "\"${gradle.mozconfig.defines.IRONFOX_APP_ID}\"";
     buildConfigField 'String', "IRONFOX_APP_NAME",                  "\"${gradle.mozconfig.defines.IRONFOX_APP_NAME}\"";
     buildConfigField 'String', "IRONFOX_APP_NAME_PRETTY",           "\"${gradle.mozconfig.defines.IRONFOX_APP_NAME_PRETTY}\"";
     buildConfigField 'String', "IRONFOX_BUGS_URL",                  "\"${gradle.mozconfig.defines.IRONFOX_BUGS_URL}\"";
diff --git a/patches/gecko-overlay/ironfox/android/core/src/main/java/org/ironfoxoss/core/IFConstants.kt b/patches/gecko-overlay/ironfox/android/core/src/main/java/org/ironfoxoss/core/IFConstants.kt
index 7dc44391..e639152e 100644
--- a/patches/gecko-overlay/ironfox/android/core/src/main/java/org/ironfoxoss/core/IFConstants.kt
+++ b/patches/gecko-overlay/ironfox/android/core/src/main/java/org/ironfoxoss/core/IFConstants.kt
@@ -7,6 +7,7 @@ import org.ironfoxoss.core.BuildConfig
  *
  */
 object IFConstants {
+  const val IRONFOX_APP_ID =                  BuildConfig.IRONFOX_APP_ID
   const val IRONFOX_APP_NAME =                BuildConfig.IRONFOX_APP_NAME
   const val IRONFOX_APP_NAME_PRETTY =         BuildConfig.IRONFOX_APP_NAME_PRETTY
   const val IRONFOX_BUGS_URL =                BuildConfig.IRONFOX_BUGS_URL
diff --git a/patches/gecko-overlay/ironfox/core/IFConstants.sys.mjs b/patches/gecko-overlay/ironfox/core/IFConstants.sys.mjs
index 5fbfb452..fa52ae6d 100644
--- a/patches/gecko-overlay/ironfox/core/IFConstants.sys.mjs
+++ b/patches/gecko-overlay/ironfox/core/IFConstants.sys.mjs
@@ -4,6 +4,7 @@
  * IronFox Constants
  */
 export const IFConstants = Object.freeze({
+  IRONFOX_APP_ID:                   "@IRONFOX_APP_ID@",
   IRONFOX_APP_NAME:                 "@IRONFOX_APP_NAME@",
   IRONFOX_APP_NAME_PRETTY:          "@IRONFOX_APP_NAME_PRETTY@",
   IRONFOX_BUGS_URL:                 "@IRONFOX_BUGS_URL@",
diff --git a/patches/gecko-overlay/ironfox/ironfox.configure b/patches/gecko-overlay/ironfox/ironfox.configure
index dd916ca8..dc82df39 100644
--- a/patches/gecko-overlay/ironfox/ironfox.configure
+++ b/patches/gecko-overlay/ironfox/ironfox.configure
@@ -118,6 +118,15 @@ def ironfox_channel(release):
     return "release"
   return "nightly"
 
+# Set the application ID
+@depends("--enable-ironfox-release")
+def ironfox_app_id(release):
+  if release:
+    return "org.ironfoxoss.ironfox"
+  return "org.ironfoxoss.ironfox.nightly"
+
+set_define("IRONFOX_APP_ID", ironfox_app_id)
+
 # Set constants
 ## These values are shared and can be used directly by both Gecko and Java/Kotlin libraries (via their respective IFConstants)
 project_flag("IRONFOX_BUGS_URL",                nargs=1, help="IronFox issue tracker URL", set_as_define=True)
diff --git a/patches/gecko-overlay/ironfox/prefs/ironfox.js b/patches/gecko-overlay/ironfox/prefs/ironfox.js
index d35161e5..ed22ca11 100644
--- a/patches/gecko-overlay/ironfox/prefs/ironfox.js
+++ b/patches/gecko-overlay/ironfox/prefs/ironfox.js
@@ -6,6 +6,7 @@
 /// Set constants
 // (These are set as prefs for use by ironfox.cfg)
 // (The values should match Gecko's IFConstants.sys.mjs)
+pref("browser.ironfox.const.IRONFOX_APP_ID",                    "@IRONFOX_APP_ID@", locked);
 pref("browser.ironfox.const.IRONFOX_APP_NAME",                  "@IRONFOX_APP_NAME@", locked);
 pref("browser.ironfox.const.IRONFOX_APP_NAME_PRETTY",           "@IRONFOX_APP_NAME_PRETTY@", locked);
 pref("browser.ironfox.const.IRONFOX_BUGS_URL",                  "@IRONFOX_BUGS_URL@", locked);