diff --git a/Libraries/Utilities/PlatformOS.android.js b/Libraries/Utilities/PlatformOS.android.js
new file mode 100644
index 0000000000..2da52e6e71
--- /dev/null
+++ b/Libraries/Utilities/PlatformOS.android.js
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule PlatformOS
+ * @flow
+ */
+
+'use strict';
+
+export type PlatformSelectSpec = {|
+ android: A,
+ ios: I,
+|};
+
+const PlatformOS = {
+ OS: 'android',
+ select: (spec: PlatformSelectSpec): A | I => spec.android,
+};
+
+module.exports = PlatformOS;
diff --git a/Libraries/Utilities/PlatformOS.ios.js b/Libraries/Utilities/PlatformOS.ios.js
new file mode 100644
index 0000000000..c9891368d8
--- /dev/null
+++ b/Libraries/Utilities/PlatformOS.ios.js
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) 2015-present, Facebook, Inc.
+ * All rights reserved.
+ *
+ * This source code is licensed under the BSD-style license found in the
+ * LICENSE file in the root directory of this source tree. An additional grant
+ * of patent rights can be found in the PATENTS file in the same directory.
+ *
+ * @providesModule PlatformOS
+ * @flow
+ */
+
+'use strict';
+
+export type PlatformSelectSpec = {|
+ android: A,
+ ios: I,
+|};
+
+const PlatformOS = {
+ OS: 'ios',
+ select: (spec: PlatformSelectSpec): A | I => spec.ios,
+};
+
+module.exports = PlatformOS;