The short version: DisplayDial has no account, shows no ads, and sells nothing. There is one feature that sends data anywhere, it is off until you switch it on, and this page says exactly what it does.
Last updated 31 July 2026
By default the extension makes no network requests at all. No analytics, no telemetry, no remote code, no account, no third parties. Nothing you browse is recorded, transmitted, or seen by us.
| What | Where it lives | Does it leave your computer? |
|---|---|---|
| Your settings (modes, warmth, dim, contrast, schedule, reading options) | chrome.storage.local | Only if you turn Sync on |
| Your site list: hostnames of sites you have adjusted or switched off | chrome.storage.local | Only if you turn Sync on |
| Which controls you have used, and how many times | chrome.storage.local | Never |
| Whether a site was measured as already dark | chrome.storage.local | Never |
DisplayDial counts which of its own controls you use, so features can be kept or removed
on evidence rather than on a guess. The counter names come from a fixed internal list
(for example mode.night or comfort.warmth); an entry that is not
on that list is discarded before it is written, so the file cannot contain a web address,
a page title, or anything you read. You can see the whole thing in Settings, copy it, or
delete it. It is never transmitted, and it is never included in sync.
Sync is off unless you turn it on. With it on, your settings and your site list are carried between the Chrome browsers you are signed into, using Chrome's own sync service in exactly the way Chrome carries your bookmarks. That means those items travel through your Google account and are handled by Google under their privacy policy rather than ours. Because the site list contains hostnames of sites you have adjusted, those hostnames are part of what travels.
The usage counts and the already-dark measurements never sync. Turning Sync off clears the synced copy.
A dark-mode extension has to run on the page you are reading, so Chrome shows a broad site-access permission at install. DisplayDial uses that access for one thing: adding a stylesheet to the page so it can be darkened, warmed, or dimmed. It does not read page content, does not watch what you type, and does not send anything from a page anywhere. You can switch it off for any individual site from the popup.
DisplayDial is not directed at children and collects no personal information from anyone, of any age.
The Mac app adjusts your displays and stores its settings on your Mac. It does not collect browsing data. If a future version reports diagnostics or checks for updates, that will be stated here before it ships.
If you gave us an email address on this site, we hold that address to tell you when DisplayDial is available. It is not sold, rented, or shared, and we do not use it for anything else. Ask and we will delete it.
If what we collect ever changes, this page changes with it and the date at the top moves. We will not quietly widen it.
Questions, or a deletion request: hello@displaydial.com.