LDS Hymns This has the LDS Hymnal in its entirety, and is searchable.

LDS Hymns This has the LDS hymns (most of them, some could not be included because of copyrighting) in PDF - you will need a PDF reader to view them. When you first open a hymn you need online access, but then they are cached for the next time.

LDS Hymns This is a free online "words only" version of the LDS Hymnal.

LDS Hymns with Notes This app allows you to view the Mormon Church's hymns in multiple langauges either as lyrics alone or with full sheet music. Great UI, easily searched, and also you can stream music from LDS.org through the app.

LDS Hymns Spanish This app has lyrics and sheet music for the LDS Hymnal in Spanish!