Sleep Noise Machine

About this app

A sophisticated white, pink, brown, and black noise generator with advanced audio customisation features. This app helps create the perfect sound environment for deep sleep, concentration, relaxation, or simply masking unwanted background noise. Now features green noise using black noise sound source and the new green noise EQ preset. Features: - Four high-quality noise types: White, Pink, Brown, and Black noise generated using advanced DSP algorithms for the higest quality - Professional-grade 10-band equaliser with customisable frequency adjustments - High-fidelity audio processing with oversampling technology and multiple biquads for superior sound quality - Black noise with a custom preset will give you the deepest sleep ever - Adjustable high-pass and low-pass filters with multiple slopes - Real-time audio spectrum visualisation with line and bar graph modes - Timer function with auto-stop capability and slow fade out - Sound changes and updates in real time as you move EQ and filter faders! - utilises advanced ear fatigue reduction methods such as gentle filter modulation, stereo processing and micro changes in dynamics making long hours of listening pleasant - Smooth crossfading between different noise types when switching for a peaceful transition - Airplay mode support - Bluetooth output support - Airpods output support - 25+ built-in audio presets for various environments and use cases - Very efficient engine enables the highest quality sounds and effects while saving on battery use - Custom user presets that can be saved and recalled - Sleek, intuitive interface with professional controls - Background audio playback support Studies show that noise can be used to help ADHD sufferers by providing consistent, non-distracting background sound. For tinnitus sufferers, the customisable frequency controls allow precise masking of troublesome frequencies, potentially providing relief from persistent ringing. The app is fully functional without subscription and you are welcome to use it as much as you like. However, if you want to enjoy the app with an unlimited timer then you can purchase a premium subscription. If you purchase a monthly or yearly subscription, payment will be charged to your iTunes account. Your account will automatically be charged for renewal within 24-hours prior to the end of the current subscription unless you disable auto-renew. You can manage your subscriptions and turn off auto-renewal by going to your account settings on the App Store after purchase. When canceling a subscription, your subscription will stay active until the end of the current period. Auto-renewal will be disabled, but the current subscription will not be refunded. End User License Agreement: https://www.apple.com/legal/internet-services/itunes/dev/stdeula/

Important Update: New lock feature to prevent accidental overwriting of your best saved presets!

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1. First observed Aug 23, 2026 · 5:42 AM Free