Windows Phone Insider is a decent little helper app that Microsoft created, but for some reason doesn't ship with, Windows Phone. It has tips, Bing wallpapers, top apps, etc.

Recently, it too got a Mango refresh and it actually has some really cool features now to take note of:

  • Exclusive Ringtones! 5 free every month from musician and composer ill. Gates.
  • Live Tile: Pin the Insider app to your phone's Start screen.  See the Tile come alive. Enjoy the daily Bing wallpaper and see at a glance when there are new apps, games and ringtones to explore!
  • Tips: To help you get started with your phone, and easily discover the 500+ new features in Windows Phone 7.5.
  • Game top picks: Discover 5 new games each week

No, that's not a typo either, there really is a phat composer (his words) named ill.Gates--check his website here. We think that's pretty great that they're working with someone to create some original ringtone content each month and that alone makes this app worth it. The other stuff is just bonus material.

Grab Windows Phone Insider here from the Marketplace. Mango devices only! (Why it doesn't show on simple searches, we have no idea). Thanks, sam.amad, for the tip via our app!