diff --git a/.circleci/config.yml b/.circleci/config.yml
index 326c9932d..b5270b3aa 100644
--- a/.circleci/config.yml
+++ b/.circleci/config.yml
@@ -63,17 +63,18 @@ jobs:
             - .gradle
           key: *primary_key_of_gradle_cache
       - run:
-          name: Assemble apk
+          name: Assemble apk from App Bundle
           command: |
-            ./gradlew clean assembleDebug --offline
+            use_debug_keystore
+            ./gradlew bundleDebug --offline
+            create_universal_apk_from_aab.bash $(find frontend/android/build/outputs -name "*.aab" | head -1)
       - store_artifacts:
-          path: frontend/android/build/outputs/apk
+          path: frontend/android/build/outputs
       - run: *download_dpg
       - run:
           name: Upload an apk and create a distribution by app-manage procedure.
           command: |
-            apk_path=$(find frontend/android/build/outputs/apk -name "*.apk" | head -1)
-            dpg procedure app-manage on-feature-branch --app "$apk_path" --android | parse_dg_response
+            dpg procedure app-manage on-feature-branch --app "$UNIVERSAL_APK_PATH" --android | parse_dg_response
       - restore_cache: &restore_danger_cache
           keys: *all_keys_of_danger_cache
       - run: &bundle_install_for_danger
@@ -90,15 +91,10 @@ jobs:
           name: Compare apks with the latest production apk
           command: |
             if download_latest_apk "$PWD/latest.apk"; then
-              # find first
-              export BUILT_APK_FILE_PATH="$PWD/$(find frontend/android/build/outputs/apk -name "*.apk" | head -1)"
+              export BUILT_APK_FILE_PATH="$UNIVERSAL_APK_PATH"
               export OLD_BUILT_APK_FILE_PATH="$PWD/latest.apk"
 
-              if [[ -f "$BUILT_APK_FILE_PATH" ]] && [[ -f "$OLD_BUILT_APK_FILE_PATH" ]]; then
-                danger_compare_apks
-              else
-                echo "Cannot find apks" 1>&2
-              fi
+              danger_compare_apks
             fi
   vital_check:
     <<: *android_defaults
diff --git a/scripts/bash.source b/scripts/bash.source
index 4ccef3981..bed0bb066 100644
--- a/scripts/bash.source
+++ b/scripts/bash.source
@@ -1,3 +1,7 @@
+if [[ -z "$REPOSITORY_ROOT" ]]; then
+    export REPOSITORY_ROOT="$(git rev-parse --show-toplevel)"
+fi
+
 export PATH="${REPOSITORY_ROOT}/scripts:$PATH"
 export PATH="${REPOSITORY_ROOT}/.circleci/scripts:$PATH"
 export AGGREGATED_TEST_RESULT_DIR="$REPOSITORY_ROOT/test-results"
@@ -9,4 +13,18 @@ fi
 
 if [[ ! -d "$AGGREGATED_REPORT_RESULT_DIR" ]]; then
     mkdir -p "$AGGREGATED_REPORT_RESULT_DIR"
-fi
\ No newline at end of file
+fi
+
+export UNIVERSAL_APK_PATH="$REPOSITORY_ROOT/universal.apk"
+
+export DEBUG_KEY_ALIAS='droidkaigi_debug'
+export DEBUG_KEY_PASSWORD='droidkaigi'
+export DEBUG_KEY_STORE_FILE="$REPOSITORY_ROOT/frontend/android/debug.keystore"
+export DEBUG_KEY_STORE_PASSWORD='droidkaigi'
+
+use_debug_keystore() {
+    export KEY_ALIAS="$DEBUG_KEY_ALIAS"
+    export KEY_PASSWORD="$DEBUG_KEY_PASSWORD"
+    export KEY_STORE_FILE="$DEBUG_KEY_STORE_FILE"
+    export KEY_STORE_PASSWORD="$DEBUG_KEY_STORE_PASSWORD"
+}
\ No newline at end of file
diff --git a/scripts/create_universal_apk_from_aab.bash b/scripts/create_universal_apk_from_aab.bash
new file mode 100755
index 000000000..cb7e8eaff
--- /dev/null
+++ b/scripts/create_universal_apk_from_aab.bash
@@ -0,0 +1,30 @@
+#!/usr/bin/env bash
+
+set -eu
+
+BUNDLE_FILE="$1"
+
+VERSION='0.8.0'
+
+curl -sL# \
+  -o bundletool.jar \
+  "https://github.com/google/bundletool/releases/download/$VERSION/bundletool-all-$VERSION.jar"
+
+java -jar bundletool.jar \
+  build-apks \
+  --bundle="$BUNDLE_FILE" \
+  --output=temp.apks \
+  --overwrite \
+  --mode=universal \
+  --ks="$KEY_STORE_FILE" \
+  --ks-key-alias="$KEY_ALIAS" \
+  --ks-pass="pass:$KEY_STORE_PASSWORD" \
+  --key-pass="pass:$KEY_PASSWORD"
+
+unzip temp.apks
+
+if [[ "$PWD/universal.apk" != "$UNIVERSAL_APK_PATH" ]]; then
+    cp universal.apk "$UNIVERSAL_APK_PATH"
+fi
+
+rm temp.apks
\ No newline at end of file