Inku

Calm ink, generative sound

Only for iPhone

Free · In‑App Purchases

iPhone

One finger, flowing ink, and a sound that changes from how you move. Calm, generative, and yours to shape. inku is a small, calm drawing surface. Drag one finger and real fluid ink swirls, blooms, and settles into the paper — no brushes, no layers, no menus. Every stroke also shapes its own generative sound, so drawing and listening happen as one gesture. Press harder, or hold still, and both the ink and the sound respond — a firmer touch releases more ink and a fuller sound; resting in place lets a slow bloom keep breathing on its own. WHAT'S INSIDE • Real GPU fluid simulation — not a filter or a preset, an actual physics-based ink surface • Generative sound built from how you move, not a looping soundtrack • Nine ink palettes, from Indigo to Cherry Blossom • Eight generative sounds, from a bright plucked tone to a slow ocean swell • Sliders to shape the ink's own behaviour — turbulence, brush size, flow force, pressure response • A soft haptic breath while you draw, on supported devices Three palettes and two sounds are free to start. The rest unlock with a single one-time purchase — no subscription, ever. inku works completely offline. Nothing you draw is saved, uploaded, or seen by anyone but you. No account, no analytics, no tracking of any kind.

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The developer, Marc Remblance, indicated that the app’s privacy practices may include handling of data as described below. For more information, see the developer’s privacy policy .

  • Data Not Collected

    The developer does not collect any data from this app.

    Privacy practices may vary, for example, based on the features you use or your age. Learn More

    Accessibility

    The developer has not yet indicated which accessibility features this app supports. Learn More

    Information

    Seller
    • Marc Remblance
    Size
    • 4.3 MB
    Category
    • Health & Fitness
    Compatibility
    Requires iOS 17.0 or later.
    • iPhone
      Requires iOS 17.0 or later.
    Languages
    • English
    Age Rating
    4+
    In-App Purchases
    Yes
    Copyright
    • © 2026 All You Can
  • Developer Website
  • Privacy Policy

    • More by Marc Remblance