Focus Noise Machine: Brown FM

Brown FM turns math into deep, continuous brown noise, generated live on-device. Use it as a steady background for sleep, studying, work, or winding down. Adjust the sound to your taste, save your settings, and listen with your screen locked. REAL-TIME SOUND GENERATION Thousands of calculations each second generate random audio signals. Brown FM softens the higher frequencies and emphasizes the deep rumble, creating the warm, steady sound of brown noise. Adjusting the controls changes how that sound is made in real time. All sound is created on your device and playback works offline. MAKE IT YOURS Adjust depth for a deeper or lighter tone, texture for a smoother or more detailed sound, or space for a narrow or wide stereo feel. Enable movement to let depth and texture evolve gently over time. Save your favorite combinations as presets. SLEEP TIMERS AND GENTLE FADES Keep the sound playing in the background, through the night or set a specific timer. Customize fade-in and fade-out settings so each session starts and ends gradually. SIRI, SHORTCUTS, AND WIDGETS Ask Siri to start playback, choose a saved sound, or set a timer. Build Brown FM into your Shortcuts routines, and keep controls close with Home Screen widgets, Lock Screen widgets, and Control Center. Follow your timer through Live Activities and Dynamic Island on supported devices. LISTENING INSIGHTS Explore your listening habits with total listening time, current and best streaks, recent nights, and a seven-night average. ACCESS OPTIONS Brown FM offers a subscription or a one-time lifetime purchase to unlock access. Privacy Policy: https://brown.fm/privacy Terms of Use: https://www.apple.com/legal/internet-services/itunes/dev/stdeula