Cookie policy
Last updated: 17 October 2026
This page explains what the 4D Ages website (4dages.com) keeps in your browser, why, and how you choose. It sits alongside our privacy policy. The 4D Ages phone app doesn't use cookies.
The short version
- We don't use advertising, analytics or tracking cookies, and we never will.
- Some storage is needed for the website to work at all. That's always on.
- Two things are optional, and off until you say yes: remembering your place, and Google services for Drive backup.
- You can change your mind at any time: Settings, Cookie settings, or "Cookie settings" at the bottom of every page.
What we keep, and why
"Cookies" here means cookies and the other ways a website keeps things in your browser (local storage, the cache and a service worker). 4D Ages itself sets no cookies; it uses your browser's storage.
Needed to work (always on)
| What | Why | How long |
|---|---|---|
| Your sign-in (local storage, set by our account service, Supabase) | Keeps you signed in on this browser | Until you sign out |
| A copy of your books (local storage) | So your books open quickly and work without a connection | Until you sign out or clear the site's data |
| Your photos, videos and voice notes (the cache, with a service worker) | So pictures show on the website and in books you make here | Until you sign out or clear the site's data |
| The lock, if you turn it on (a key made by your device) | Checks it's you before opening the website | Until you turn the lock off |
| Your cookie choices (local storage) | So we don't ask again on every visit | Until you change them or clear the site's data |
Without these the website can't work, so the law lets us use them without asking. They're never used to track you.
Preferences (optional)
| What | Why | How long |
|---|---|---|
| The page you were on (local storage) | So the website opens where you left off | Until you turn preferences off (then it's removed) or clear the site's data |
Google services (optional)
Backing up your books to your own Google Drive uses Google's sign-in for websites (Google Identity Services). When you use it, Google's own code runs on the page and Google sets its own cookies, as described in Google's cookie policy. We only load it if you allow Google services, and only when you start a backup.
"Sign in with Google" is different: it takes you to Google's own website to sign in, then brings you back. That's Google's site and Google's cookies, so it isn't one of these choices.
Your choices
The first time you visit, we ask. "Accept all" and "Necessary only" are equally easy, and "Choose" lets you turn each group on or off. Nothing optional is used until you say yes. To change your mind, open Cookie settings at the bottom of any page, or in Settings. You can also clear all of the website's data in your browser's settings; you'll need to sign in again, and pictures not yet downloaded come back from your account.
Changes
If we ever add something new to these choices, we'll update this page and ask you again.
Contact
Questions about cookies or your privacy: email [email protected].