Serenity for iPhone, iPad, and Android. Calm audio that stays out of the way.

Serenity combines 30 sounds, a 5-channel mixer, presets, and a sleep timer so you can build the exact background sound you want for sleep, focus, or quiet downtime.

30 sounds5-channel mixingPresetsSleep timerKorean + EnglishLocal data only

Download on the App Store Get it on Google Play

Built for a simple nightly flow

Choose the sounds that fit your routine.

Mix up to five channels and save the blend you like.

Set the timer, start playback, and let the mix fade out gently.

What you get

Everything is focused on sound, not accounts or tracking.

Serenity keeps settings and presets on the device. There is no account, no ads, and no analytics or crash reporting SDK in the app build.

🌧

30 Sound Library

Mix rain, ocean, forest, fireplace, city ambience, brown noise, and white noise into your own sleep scene.

🎚

5-Channel Mixer

Blend up to five sounds at once and tune each channel individually for the exact balance you want.

💾

Presets

Save your favorite mixes and come back to the same setup whenever you need it.

⏳

Sleep Timer

Set a timer and let Serenity fade out gradually when it is time to sleep.

📱

Background Playback

Keep audio playing while the screen is off or while you are using other apps.

🌐

Korean and English

Serenity ships with both Korean and English UI copy so the core experience stays easy to use.

Free tier

Enough to build a reliable bedtime mix.

•15 sounds available for free
•2 saved presets on the free tier
•Core mixer and timer features

Serenity Pro

Unlock the full sound library and save more mixes.

•Full 30-sound library
•Expanded preset saving
•Built for uninterrupted nightly use

Privacy and trust

Local by default.

Settings, presets, and playback preferences stay on the device. Serenity does not require an account to use the app.

Settings and presets stay on your device

No account required

No ads

No analytics or advertising tracking SDKs