It's secure to download this application. UNITED, Inc. is the official developer of the app which can be found in the Casual Games category. The most recent update of the game was released on Jan 17, 2013 and にゃんこレンジャー was downloaded by over 10K users.
Google Play shows that this application is rated 3.4 by its users. It's free of charge to get the installation package of にゃんこレンジャー, also, you can read users' reviews on Droid Informer. The app works fine on Android 2.1 and above.