Muon - Sleep & Focus Sounds

Muon is a premium sleep and focus sound sanctuary, crafted with 
studio-grade DSP synthesis and real-world field recordings. No 
subscriptions, no ads, no accounts — one purchase and every sound 
is yours forever.


WHAT MAKES MUON DIFFERENT

• 40 Hand-Crafted Soundscapes
From a mother's womb heartbeat to a distant pulsar, from bamboo 
rain to underwater currents. Every sound is either a real field 
recording (CC0/CC-BY licensed, credited) or synthesized in-house 
with 24-bit / 48kHz DSP.

• Apple Spatial Audio (New in v1.4)
Put on your AirPods Pro or Max and feel sounds rotate around you 
as you turn your head. Powered by AVAudioEnvironmentNode and 
CMHeadphoneMotionManager.

• Four Audio Quality Tiers
L1 Algorithmic — pure DSP, infinite variation
L2 Field Recording — real-world sources from Freesound archives
L3 Binaural HRTF — 3D positioned via head-related transfer functions
L4 Apple Spatial — head-tracked immersive audio

• 100% Offline, 100% Private
All 40 sounds ship inside the app. No streaming. No tracking. No 
account. Your listening habits never leave your device.

• Designed for Real Life
Baby sleep: womb heartbeat, shushing, lullaby ambience
Deep focus: brown noise, library ambience, coffee shop
Meditation: Tibetan bowls, forest streams, ocean waves
Stargazing: cosmic pulsars, deep space drones


FREE vs PRO

Free includes 8 essential sounds and standard quality.

Pro ($3.99 one-time) unlocks:
• All 40 sounds
• Apple Spatial Audio and Binaural HRTF
• Highest quality tier per sound
• All future sound packs, forever

No subscriptions. No renewals. One purchase, one lifetime.


TECHNICAL HIGHLIGHTS

• Built natively with SwiftUI and AVFoundation
• AAC 256 kbps / 48 kHz mastering
• 78 MB total bundle, fully offline
• iOS 17+ optimized, iPhone and iPad universal
• Battery-friendly low-power mixing engine


CREDITS

Field recordings licensed under Creative Commons from the 
Freesound community. Full attribution at muon.app/credits.


SUPPORT

Questions or feedback? Email [email protected]
Privacy Policy: https://flashbody.github.io/Muon/privacy
Terms of Service: https://flashbody.github.io/Muon/terms


Sleep better. Focus deeper. Own your sounds.