diff --git a/backend/android_tools.py b/backend/android_tools.py
new file mode 100644
index 0000000..e3199b9
--- /dev/null
+++ b/backend/android_tools.py
@@ -0,0 +1,48 @@
+import glob
+import os
+from pathlib import Path
+
+from backend.shell_runner import run_command
+
+DATA_DIR = Path(os.getenv('DEVCONSOLE_DATA_DIR', '/var/lib/devconsole'))
+PROJECTS_DIR = DATA_DIR / 'projects'
+
+
+def list_devices() -> dict:
+    return run_command('adb devices -l', PROJECTS_DIR.as_posix(), timeout=60)
+
+
+def find_apks(workspace: str) -> list[str]:
+    root = Path(workspace).resolve()
+    patterns = [
+        str(root / '**' / 'build' / 'app' / 'outputs' / 'flutter-apk' / '*.apk'),
+        str(root / '**' / 'build' / 'outputs' / 'apk' / '**' / '*.apk'),
+        str(root / '**' / '*.apk'),
+    ]
+    found: list[str] = []
+    for pattern in patterns:
+        found.extend(glob.glob(pattern, recursive=True))
+    return sorted(set(found), key=lambda p: os.path.getmtime(p), reverse=True)
+
+
+def build_android(workspace: str) -> dict:
+    root = Path(workspace).resolve()
+
+    if (root / 'pubspec.yaml').exists():
+        return run_command('flutter build apk --debug', root.as_posix(), timeout=1800)
+
+    gradlew = root / 'gradlew'
+    if gradlew.exists():
+        return run_command('chmod +x ./gradlew && ./gradlew assembleDebug', root.as_posix(), timeout=1800)
+
+    if (root / 'android' / 'gradlew').exists():
+        return run_command('cd android && chmod +x ./gradlew && ./gradlew assembleDebug', root.as_posix(), timeout=1800)
+
+    return run_command('gradle assembleDebug', root.as_posix(), timeout=1800)
+
+
+def install_latest_apk(workspace: str) -> dict:
+    apks = find_apks(workspace)
+    if not apks:
+        raise ValueError('APK not found. Build project first.')
+    return run_command(f'adb install -r "{apks[0]}"', Path(workspace).resolve().as_posix(), timeout=600)