Download from Google Play
Downloading Ahoy from Google Play is recommended because it will keep the App up-to-date automatically.
Download the APK package
If you, too, like to live dangerously and have allowed the installation of non-Market apps, you can download the current Ahoy APK here:Ahoy-0.9.1.apk (0.6 MB)
Download the source code
If you're feeling adventurous, feel free to download the source code and compile the app yourself.