Cookie policy

Which cookies we set, why, and how to opt out.

ScaleMastery uses two classes of cookies. Functional cookies make the site work as expected; advertising cookies pay for the Free tier.

Functional cookies (always on)

sm_session — anonymous session ID for Worksheet save/load.
sm_tier_token — HMAC-signed paid-tier credential.
sm_consent — your choice on the banner.

Advertising cookies (consent-gated)

We use Google AdSense to display advertisements on the Free tier. AdSense sets cookies for frequency capping, ad personalisation (where allowed), and impression/click measurement. These cookies load only when you click

You can change your choice at any time on this page. Personal and Teacher tier accounts never load advertising cookies, regardless of consent setting.