diff --git a/backend/pubspec_tools.py b/backend/pubspec_tools.py
new file mode 100644
index 0000000..e3bb8ed
--- /dev/null
+++ b/backend/pubspec_tools.py
@@ -0,0 +1,46 @@
+import re
+from pathlib import Path
+
+
+_VERSION_RE = re.compile(r'^\s*version\s*:\s*([^\s#]+)')
+
+
+def read_pubspec_version(workspace: str) -> dict | None:
+    """Read Flutter version/build from pubspec.yaml.
+
+    Supports the standard Flutter format: version: 1.2.3+45
+    Returns None when pubspec.yaml is missing or version is not declared.
+    """
+    pubspec_path = Path(workspace).resolve() / 'pubspec.yaml'
+    if not pubspec_path.exists():
+        return None
+
+    try:
+        content = pubspec_path.read_text(encoding='utf-8')
+    except UnicodeDecodeError:
+        content = pubspec_path.read_text(errors='ignore')
+
+    for line in content.splitlines():
+        match = _VERSION_RE.match(line)
+        if not match:
+            continue
+
+        full_version = match.group(1).strip()
+        version, build = _split_flutter_version(full_version)
+        return {
+            'success': True,
+            'version': version,
+            'build': build,
+            'full_version': full_version,
+            'pubspec_path': pubspec_path.as_posix(),
+        }
+
+    return None
+
+
+def _split_flutter_version(full_version: str) -> tuple[str, str]:
+    if '+' not in full_version:
+        return full_version, '1'
+
+    version, build = full_version.split('+', 1)
+    return version.strip() or '0.0.1', build.strip() or '1'