A calm sound machine,
made by one person

Slo is made by Filip, an independent app developer. After more than a decade building mobile apps, much of it for other companies, he went fully independent in 2023 to make small, carefully crafted apps worth using.

Why Slo exists

Slo started from a simple frustration: most sound apps are buried under logins, ads, and endless menus. Slo is the opposite. Open it and you are one tap from rain, brown noise, or a crackling fire. No account, no clutter. The web mixer you are using is completely free and needs nothing but a browser. The app remembers the mixes you build and keeps playing with the screen off.

Made by one person

Because Slo is built and maintained by one person, every sound, screen, and detail gets deliberate attention. It is a small app made with care, not a growth machine. You can find Filip's other apps on the App Store and Google Play.

Get in touch

Questions or feedback? Email support@slonoise.com, and it reaches Filip directly.