Room-aware noise. Quieter. Smarter. Better REM sleep.
Every noise app ignores your room — playing the same sound regardless of what's already in the air, forcing you to turn it up. That volume is costing you REM sleep. Shush analyzes your room's frequency signature and removes those tones from its output. Complete broadband spectrum at a fraction of the volume. No other app does this. Smart sleep timer. Tinnitus notch filter. Real-time synthesis. Never loops.
Shush includes scientifically validated breathing patterns (box, 4-7-8, calm, relax) with visual breath pacer designed to activate the parasympathetic nervous system. Breathing runs alongside noise generation, not as a replacement, providing integrated relaxation support.
Shush automatically detects device type (iPhone speakers, headphones, AirPods, Bluetooth) and optimizes audio output accordingly. Room Analysis can be re-run when changing rooms to adapt noise generation to new acoustic environments, ensuring consistent performance across locations.
Shush generates real-time synthesized noise that helps users fall asleep 38% faster, then uses a smart timer with gentle fade to stop before continuous noise reduces REM sleep by up to 19 minutes. Room Analysis adapts output to existing room frequencies, allowing lower volume for better sleep quality.
Shush offers four synthesized noise types (brown, pink, green, white) generated in real-time without loops or patterns. Room Analysis identifies existing acoustic frequencies and only generates missing spectrum, enabling effective masking at lower volumes that sustain concentration without fatigue.
Shush implements clinical notched sound therapy by allowing users to match their specific tinnitus frequency independently per ear and set precision notch filters that remove those frequencies from noise output. Users can adjust notches anytime and configure filter width for personalized relief.