This particular version of Word Slinger is not available for Android, but there are alternatives. For example, you can install on your Android device an application with the same name that works and offers gameplay based on the original one. You can access it through the Play Store in your phone, or you can install it using the web browser.
Play Store URL: https://play.google.com/store/apps/details?id=com.method.wordslinger
Note: You need to be signed in on the web browser with the account that's attached to your Android device./