Van Meter Library Voice recently posted resources for "Poem in Your Pocket Day," -April 18th. A google doc has been shared for educators to share resources and more ideas can be found at Poets.org
Be sure to check out Tech4Learning's Creative Educator for instructional ideas. Creating a Video Poem is a lesson for 4-12 using Pixie, Wixie, Frames or another app of choice.
Instant Poetry Forms is a great site to connect and motivate learners with poetry. Yes, these forms do work on mobile devices too. This is a great tool to teach the language of poetry. Here is a great pdf - Poetic Devices for your toolkit.
ReadWriteThink has an interactive acrostic poem creator that will only work on some devices since it is flash driven. They do have their own mobile app - Word Mover with many lesson ideas at Read Write Think.