Cookie Policy
A simple explanation of required storage and optional MassMem cookie-style preferences.
Necessary cookies and local storage
MassMem uses localStorage, sessionStorage, Firebase Auth storage, and IndexedDB for language and sound choices, demo limits, training state, sign-in/session support, security, and the saved consent choice.
The authenticated daily active-user counter is a server-side operational aggregate. It does not place an analytics cookie and is not controlled by this optional analytics preference.
Session items last until the tab or browser session ends. Persistent app data lasts until it is replaced, local browser data is cleared, or the related account is deleted. The consent choice is valid for 180 days.
Analytics/diagnostics
Analytics/diagnostics are optional and off by default. With consent, GA4 may create _ga and _ga_<container> cookies for up to 2 years and Google Ireland Limited may access analytics data.
With the same optional choice, Sentry, provided by Functional Software, Inc., may receive technical error diagnostics. Its retention must match the period configured in the MassMem Sentry account and the Privacy Policy. Neither integration loads before explicit consent.
Marketing
MassMem currently loads no marketing tracking scripts and does not collect advance consent for future, unspecified marketing providers.
If such a provider is added, MassMem will update this policy, increase the consent version, and request a new choice before loading it. Normal outbound social links do not embed tracking scripts.
Change your choice
You can reopen Cookie preferences from the footer or this page, then accept analytics/diagnostics, keep only necessary storage, or save your choice. Withdrawal takes effect immediately for future events.