I’ve been building a cozy ambience app with React. The idea started pretty simple: a space where you can mix ambient sounds like rain, wind, coffee shop noise, and fire crackling to help you focus or relax while working or studying. Over time, it started evolving into something more interactive and structured than I originally planned. Right now it’s still early (around 5–10% done), but the core experience is already forming. It’s not meant to be a heavy productivity tool or anything overly complex. The focus is more on mood — creating a calm, minimal environment that feels slightly immersive and easy to stay in. The main system so far is the ambient sound engine. Each sound runs independently, and you can adjust volumes in real time to build your own mix. On top of that, I’ve added a preset system, which lets you save and switch between different ambient setups.…