White noise, rain, thunder and forest sounds for sleep, focus and study. Blend
five sound layers into your own mix. No ads, ever — plus a full offline music
player for your own files.
SOUND LIBRARY
Rain on a cabin roof. Distant thunder. Deep forest at night. A cafe murmur. A
crackling fireplace. Ocean against a cliff. A night train. A purring cat. More
than 40 handcrafted soundscapes for sleeping, working, studying and winding down.
MIX IT YOURSELF
Every pack holds five separate sound layers. Pull the rain up, push the thunder
back, add a touch of wind. Build the balance you want and keep it. Most white
noise apps hand you one fixed track — Howl hands you the mixing desk.
LIVING SOUNDSCAPES
Selected packs run on our Living engine, which generates the environment in real
time instead of looping a file. Every gust of wind and shift in texture is
produced as you listen, so the sound never repeats.
SLEEP TIMER WITH GENTLE FADE
Set a timer and Howl fades out slowly instead of cutting to silence, so the end
of playback never wakes you.
YOUR OWN MUSIC, OFFLINE
Howl is also a complete offline music player. Bring your own library — MP3, AAC,
FLAC and WAV are all supported — and play it with no internet connection at all.
Playlists, smart playlists, custom artwork and a sleep timer included.
TRANSFER OVER WI-FI
Move music from your computer straight to your phone over your local network. No
cable, no cloud upload, no account. Open the transfer screen, drop the files in
your browser, done.
NO ADS. NOT ONE.
No banners, no interstitials, no rewarded videos anywhere in Howl. Free means
free, not free with interruptions.
PRIVACY
Your library and your listening history stay on your device. Howl is local-first
by design.
White noise, rain & forest sounds for sleep and focus. No ads, fully offline.