I've been working with adding lyrics directly to iReal Pro charts using Text mode for quite a few months now. I've made full arrangements of some pretty complex tunes, lyrics-wise (e.g., Begin the Beguine, C'est Si Bon, Day In Day Out, Night and Day, Dancin' Cheek to Cheek, etc.) using my own abr'v'a'tns sometimes with "reminder lyrics" to save space and it's worked well for me. Reading both chords and lyrics from the same iReal Pro chart is not a problem in landscape mode on my iPhone 5C, especially using my iPhone clip on my mic stand. And I'm a glasses-wearing 68-year-old, so . . .