InkZen: Mindful Focus & InkArt – Fluid ink timer with procedural audio and Metal shaders

Summary: InkZen is a focus timer app that simulates real carbon ink drying on rice paper using a custom fluid dynamics engine powered by Metal Compute Shaders. It features real-time physics-based ink flow and stochastic procedural audio to create a non-repeating visual and auditory environment for concentration.

What it does

InkZen calculates ink flow in real time with a fluid dynamics engine mapped to Metal compute shaders and generates procedural rain and bell sounds using an audio graph. It integrates with iOS WidgetKit and Live Activities for native functionality.

Who it's for

The app is designed for users seeking a calming, visual anchor for focus, including those with ADHD or anyone needing an alternative to traditional timers.

Why it matters

InkZen replaces static timers and repetitive audio loops with dynamic, physics-based visuals and sound to reduce anxiety and improve flow states during focused work.