Fly Guide is a great little app for fly fisherman and fly tiers alike. It includes pictures and descriptions of a wide variety of dry flies, nymphs/emergers, and streamers. It also includes information on when and how to use each fly, the materials needed to tie it, and a link to a quality video for tying it successfully. This update adds 9 new flies, so have fun tying the new ones since a couple of them are a bit more challenging!