Your parish's hymnals
Keep each hymnal as your own index of numbers, titles, first lines, tunes and season tags, typed in or imported from a spreadsheet.
Pick hymns for each Sunday on the planning desk. Backups of everything are on its Backup tab.
The planner uses the tags to suggest hymns and to warn about repeats. Hymnwise ships no hymn texts, no lectionary tables and no liturgical texts: you type or import your own, under your own licences. See importing your hymnal index, then plan on the planning desk.