sotto.

Listen privately.

The audio player that keeps your library to yourself — audiobooks, music, and podcasts, with privacy built into every screen.

iPhone & iPad · Coming soon

9:41Monday, June 15
The Midnight Library
Matt Haig · Chapter 14
4:12-6:48
Your lock screen — you choose what it says.

The story

It started with a cover my kid should never have seen.

I was in the car, part-way through a fantasy-horror audiobook, when the cover art flashed onto the CarPlay screen — and it scared my child. Nothing dramatic. Just artwork meant for a grown-up's imagination, showing up somewhere small eyes could see it.

That moment stuck with me. I started noticing how often what we're listening to is on display without our say-so: the lock screen on a crowded train, Control Center when you hand your phone to a friend, the dashboard on the school run, AirPlay in a room full of family. A cover, a title, an author — quiet little signals telling everyone around you what's in your head.

Sotto is the answer I wanted. Listen to whatever you love — the strange, the scary, the deeply personal — and decide for yourself what the world sees. No judgment, no explaining, no covers you didn't choose.

Listen to anything, anywhere — without it showing on a screen you don't control.

— Made by one person who just wanted to listen in peace.

The app

See Sotto in action.

Audiobooks, podcasts, and music — with privacy on every screen.

Sotto shown on two phones: the audiobook player, and the “Listen privately” privacy screen.
Your library, on your terms: the Audiobooks Privacy settings, a now-playing screen with a custom cover, and the unified Library.

Built for the long listen

Everything a spoken-word listener actually reaches for.

Hours-long books and shows have their own needs. Sotto sweats those details.

Smart resumeRewinds a few seconds on play so you never lose the thread.
ChaptersJump by chapter, with seek scoped to where you are.
Variable speedSeparate defaults for books and music — or override per title.
Fading sleep timerEases the volume down instead of cutting off mid-sentence.
Full equalizerPresets plus a per-title EQ override when a book needs it.
On your deviceNo account, no ads, no trackers. Files and progress stay local.