Generated as you listen
Most sounds come from 288 audio engines running in real time. None of them is a stored clip: the engine keeps producing new sound for as long as you keep listening.
The sound library
Sound you can shape.
Rain, forests, oceans, fire, machines, instruments and pure tones: 1,264 sounds, built live on your device and mixed however you like.
- 1,264 sounds
- 288 audio engines
- 110 ready-made scenes
- 10 languages
Two ways to make a sound
Synthesised and recorded, side by side.
Recordings that keep moving
Instruments and animals also come as real recordings, played by the same live sequencer, so a real piano or a real loon does not fall into a loop either. They download once, then play offline.
A quick taste
Eight corners of the library
A few names from each. The app holds 1,264.
Rain & weather
- Rain
- Thunderstorm
- Rain on Tent
- Rain on Window
- Wind
- Desert Wind
Forest & nature
- Dawn Chorus
- Rainforest Dawn
- Bamboo Forest
- Wind in Pines
- Moss Forest
- Stream
Water & ocean
- Ocean Waves
- Waterfall
- Underwater
- Aquarium
- River Rapids
- Hot Springs
Animals & birds
- Crickets
- Crow
- Owl
- Loon
- Wolf Howl
- Bee Hive
Indoors & cozy
- Coffee Shop
- Fireplace
- Library
- Kettle
- Greenhouse
- Bookstore
Machines & rhythm
- Train
- Subway
- Sewing Machine
- Printing Press
- Windmill Creak
- Air Conditioner
Music & instruments
- Piano
- Guitar
- Tabla
- Sitar
- Music Box
- Glass Chime
Pure tones
- Brown Noise
- Pink Noise
- White Noise
- Drone Harmonics
- Binaural Beats
- Difference Tone
Tune it
Every sound has its own controls.
Open a sound to change what makes it that sound: how hard the rain falls, what it lands on, how wide it sits in your headphones. Keep the settings you like as presets.
Mix it
Layer sounds into your own mix.
Balance each layer, lock a level so it holds through transitions, and save the result with a name. Share it as a link and it opens in one tap.
Coming soon to iPhone, iPad and Android.
Optophone is not in the App Store or Google Play yet. When it arrives it will be free to install, with no account needed to start — 35 sounds free forever with no ads, and Premium for the rest.
Coming soon App Store
Coming soon Google Play