inku
Ink that listens back.
inku is a small, calm app. Drag one finger and real ink swirls, blooms, and settles into the paper — each stroke shaping a sound of its own. Press harder, or hold still, and both change with you.
What inku does
- One finger. No menus, no scores, no timers.
- Real fluid ink — it swirls and settles like it's actually wet.
- Every stroke shapes its own sound as you draw.
- Hold still, and it keeps breathing quietly on its own.
- Works completely offline.
A few of the palettes
Sea
Aegean blue into turquoise shallows.
Sunset
Cinder smouldering into flame.
Cherry Blossom
Bordeaux deepening into rosewood.
Jade
Forest, moss, and stone.
Eight ways it can sound
- Glint — bright, plucky, koto-like.
- Hollow — a slower, melancholic swell.
- Kiln — a bronze strike that rings out.
- Shakuhachi — a breathy bamboo flute.
- Wisp — airy, and almost pure tone.
- Reed — low, breathy, more air than tone.
- Drift — wind moving through something unseen.
- Tide — a slow, deep ocean swell.
- Firmer pressure deepens the ink and the sound together.
- Choose one ink colour, or let it cycle with every stroke.
- A soft haptic breath while you draw, if your phone supports it.
- Three ink palettes and two generative voices free to start — the rest unlock with a single one-time purchase.
- Nothing is tracked. Nothing leaves your phone.
A closer look
