IRO is a coloring app for grown-ups who want to switch off, not switch on. Tap-to-fill or paint freehand with Apple Pencil across collections made for adults — tattoo flash, natural wine bars, champagne cellars, candlelit lounges. Curated, muted palettes do the matching for you, so there's no decision fatigue, just color. Watch a piece come to life, then export it watermark-free. No timers, no streaks, no noise. Just a quiet place to make something beautiful. iPhone & iPad.