And there’s one thing less you need to carry when taking your dog out for a walk now. The mosquito sound-ish Dog Whistle app for Windows Mobile devices.

The small, but nice, application produces mosquito sound typical of dog whistles. Select the frequency and press on the whistle to hear it.

The latest version provides wider range of frequencies, and allows saving the frequency on exit.

Developed by hermanm over at xda-developers. Download the app for your WinMo here (free signup to xda-developers required).