Moss

Privacy Policy

Last updated: July 27, 2026

Moss is a sound app for sleep, focus, and relaxation, made by Derivative Media LLC (hello@derivativemedia.com). Privacy is the whole point of the app, so this policy is meant to be read, not skimmed past.

The short version

Moss has no accounts and never asks who you are.

All sound is generated on your device, and your settings (selected sound, volume, tone, timers) stay on your device. The only thing that leaves your device is anonymous, aggregate usage analytics, and you can turn that off in Settings › Privacy at any time.

Analytics we collect

To understand what to build next (which sounds people actually use, whether the sleep timer helps, where people get stuck), Moss records a small set of anonymous product events, for example:

a sound started, and which texture it was;
a sleep timer was set, and for how long;
the upgrade screen was shown, and whether a subscription followed.

These events are not tied to your identity. Moss has no accounts, and we never collect your name, email, contacts, location, or any device identifier that follows you between apps. Each install is represented by a random ID that exists only to group that install's own events; it resets if you delete and reinstall the app. We do not build a personal profile, and we do not record your screen.

Analytics is processed on our behalf by PostHog (posthog.com), hosted in the United States. PostHog is our processor only; the data is not shared with anyone else, not sold, and not combined with data from other apps or data brokers.

Turning it off. Settings › Privacy › "Share anonymous analytics." Switch it off and Moss stops sending anything at all.

Advertising attribution

If you install Moss after tapping an Apple ad (Apple Search Ads / Apple Ads), Apple can tell us which ad campaign brought you, using Apple's own AdServices system. This is campaign-level information (which campaign, ad group, or keyword); it is not the Advertising Identifier (IDFA), it does not identify you, and it does not track you across other apps, which is why it doesn't require the "Ask App Not to Track" prompt. We use it only to learn which ads are worth running. It is subject to the same analytics opt-out above.

Subscriptions

Moss+ subscriptions are processed entirely by Apple through your Apple Account. We never see your payment information. Apple's privacy policy applies to the purchase itself: apple.com/legal/privacy.

What we never do

No accounts, no sign-in, no personal profiles.
No selling or sharing of personal data.
No cross-app or cross-device tracking, no ad networks, no data brokers.
No IDFA, no fingerprinting, no session or screen recording.

Contact

Questions? Reach us through the contact form.

Changes

If this policy changes, we will update this page and the date above.