Sound Atlas

Privacy policy

Last updated: 1 September 2026

Sound Atlas is a private music library and recommendation app. This policy describes what it collects, why, and what it never does. It is short, because the app does little with personal data.

Who runs Sound Atlas

Sound Atlas is operated by Hooman Takhtechian. Questions, requests for your data, and requests for deletion: hoomantakuk@gmail.com.

Who can use it

Sound Atlas is invitation-only. Accounts are created for named people; there is no public sign-up.

What Sound Atlas stores about you

Your identity from Google Sign-In — your Google account identifier, email address and display name. This is used to know which account you are and to keep your library separate from anyone else's. Nothing else in your Google account is read.
What you tell the app about music — your song ratings, the artists and genres you mark as liked or avoided, songs you skip, and playlists you create. This is the substance of the app: your ratings are what the recommendations are built from.
Session records — sign-in sessions and the times they were used, so a session can be ended and so unusual access can be noticed.

The YouTube permission

If — and only if — you choose to connect YouTube Music, Sound Atlas asks for permission to manage your YouTube playlists (https://www.googleapis.com/auth/youtube).

That permission is used for exactly one thing: creating a playlist in your YouTube account, or adding songs to one you chose, when you ask Sound Atlas to publish a list. Nothing happens without that explicit action.

Sound Atlas does not read your watch history, your subscriptions, your comments, your uploads, or any playlist you did not select. The only thing it ever removes is a playlist Sound Atlas itself created, and only when you ask for that list to be replaced. It does not post on your behalf. It does not use the permission in the background: no scheduled jobs, no syncing, nothing while you are not using it.

Connecting YouTube Music is optional. The rest of the app works without it, and you can disconnect at any time — either in Sound Atlas or at myaccount.google.com/permissions, which revokes the permission immediately.

Sound Atlas's use of information received from Google APIs adheres to the Google API Services User Data Policy, including the Limited Use requirements.

What Sound Atlas never does

It does not sell your data, and does not share it with advertisers.
It does not use your data to train machine learning models beyond your own recommendations, which exist only for your account.
It does not transfer your data to anyone, except where required by law.
It stores no payment details, because it takes no payments.

Where your data lives

In a private database controlled by the operator. Credentials for connected services, including the YouTube authorisation, are stored encrypted and are never shown in the app or sent anywhere else.

How long it is kept

Your data is kept while your account exists. Ask, and it is deleted — the whole account, or just the connection to YouTube. Deletion is honoured within 30 days.

Your choices

See your data: the app exports your ratings and playlists on request.
Disconnect YouTube: in the app, or through your Google account permissions.
Delete everything: email the address above and the account and its data are removed.

Changes

If this policy changes materially, the date above changes and anyone with an account is told before the change takes effect.