Fade-out timer
The sound gradually lowers until it stops, instead of cutting off suddenly and waking you up. From 15 minutes to two hours.
Rain, campfire, waves, and ASMR playing at the same time, each with its own volume. You decide how your night sounds.
Almost all sound apps give you fixed tracks: you choose “rain” and hear whatever someone recorded. Serenima works the other way around. You turn on the sounds you want —up to eight at once— and set each one’s volume until it sounds the way you imagine it.
If you don’t feel like building it yourself, start with one of the quick mixes and tweak it from there. The app never opens in silence.



The sound gradually lowers until it stops, instead of cutting off suddenly and waking you up. From 15 minutes to two hours.
No sign-up and no internet needed for it to play. Open the app and it works.
Nothing will interrupt what you’re listening to. It’s the most repeated complaint in competitor reviews, and it doesn’t happen here.
One control for the whole mix, in addition to each sound’s own control. It seems obvious, and almost none have it.
Rain, storm, river, waves, campfire, white noise, and ASMR. In-house production, not third-party sound libraries.
Dark interface, large controls, and everything one tap away, so you don’t get a blast of light at three in the morning.
Serenima is free: the full mixer, any mixes you want to save, the fade-out timer, and offline use cost nothing.
It includes ads and in-app purchases to unlock the full catalog. Ads never play sound or interrupt playback.
Serenima is currently on Google Play. The iPhone version will come later; when it does, it will appear here.
It’s free, works without an account, and doesn’t need a connection.
Serenima is developed and published by Consultoría EHERO S.L.U. Want an app for your business? We explain how we work at custom apps.
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