Cookies

Effective 14 October 2026.

Cookie Policy

This page explains what layermetry stores on your device when you visit our website (layermetry.com) or use our app (app.layermetry.com). It should be read with our Privacy Policy.

"We", "us" and "layermetry" mean Distra Labs Limited, a company registered in England and Wales (company number 14082553), trading as layermetry.

The short version

Our website does not use advertising cookies.
We count visits with Plausible and PostHog. Unless you accept statistics cookies, neither of them stores anything on your device.
If you accept statistics cookies in our banner, PostHog also uses a cookie to recognise your browser on later visits, and may record your visit so that we can see where the website is hard to use.
Without your permission, the website stores only what it needs to work, such as your language and your light or dark choice.
Our app (app.layermetry.com) uses more tools, including analytics and a support chat. They are listed below.

What is a cookie?

A cookie is a small text file that a website saves on your device. Websites can also save information in other ways, for example in "local storage" in your browser. In this policy, "cookies" means both.

What the law says

In the United Kingdom, a website must ask for your permission before it saves information on your device or reads information stored there. There are exceptions. We do not need to ask when the storage is strictly necessary to give you something you asked for. Since 5 February 2026, we also do not need to ask when the only purpose is to collect statistics about how a service is used so that we can improve it. Even then, we must tell you clearly what we do and give you an easy way to object.

Our website (layermetry.com)

Strictly necessary and preference items

These make the website work in the way you asked. We do not ask for permission to use them.

NEXT_LOCALE (cookie). Remembers the language you chose. It lasts for your browser session.
lm-theme (local storage). Remembers whether you chose the light or the dark look. It is saved only if you press the theme button. It stays until you clear your browser data.
Sign-in cookies (names starting with __session and __txn). Keep you signed in after you sign in, and hold short-lived data while you sign in. They are set only when you sign in. A sign-in lasts up to three days and ends sooner if you are inactive for a day.
payload-token (cookie). Keeps our own staff signed in to the website's editing screen. Visitors do not receive it. It lasts two hours.

None of these items is used to follow you around other websites. We do not use them for advertising.

Visit statistics without cookies

We use two tools for this, Plausible Analytics and PostHog. Both work without cookies unless you give permission.

We use Plausible Analytics to see which pages are read and how people reach our site. It does not use cookies or local storage. It does not create a lasting identifier for you. It reports totals, not profiles of individuals. We use the numbers only to improve the website. We do not use them for advertising and we do not combine them with other data to identify you.

To make this work, Plausible receives the address of the page, the page you came from, and basic details about your browser and device. Your IP address is part of the request, and Plausible uses it only to produce a short-lived anonymous count. See Plausible's own explanation at plausible.io/data-policy.

We also use PostHog (servers in the European Union) to see which buttons are pressed and at which step visitors leave. Until you accept statistics cookies, PostHog runs in its cookieless mode: it stores nothing on your device, and PostHog's servers count visitors with a number worked out from the request, which is changed regularly so that it cannot follow you over time. We see totals, not profiles of individuals.

Because we use Plausible, and PostHog in cookieless mode, only for statistics to improve our service, we rely on the statistics exception described above.

How to object. You can object at any time. The simplest way is to block the script in your browser's tracking protection or with a content blocker; the website works the same without it. You can also email hello@layermetry.com and we will help you stop the counting for your browser.

Items used only with your permission

Our website shows a consent banner (Cookiebot). If you accept statistics cookies:

PostHog cookie and local storage (names starting with ph_). Recognise your browser on later visits, so we can see how people return and move through the site. They last up to one year.
PostHog session recording. Records the pages you see, your mouse movements, clicks and scrolling during your visit. Text you type into form fields is hidden. Recordings are kept by PostHog for a limited time and are used only to find problems on the website.

If you reject or ignore the banner, none of these are set. If you change your mind, PostHog goes back to its cookieless mode.

The banner itself saves one cookie, named CookieConsent, to remember your choice. This is strictly necessary.

Events that we count

Some actions, such as sending the contact form, joining the newsletter, or opening the demo editor, are counted as events in Plausible and PostHog. These counts contain the name of the action and, for the demo, the name of the sample file. They do not contain the text you type.

The demo editor

The demo editor on our website runs in your browser. If you open your own file in it, the editor may save settings, the history of your edits and some temporary data in your browser's storage on your device so that the editor works. That data stays on your device and we do not receive it. You can clear it in your browser settings.

Our app (app.layermetry.com)

The app is a separate service, and it uses more storage than the website. At the time of writing it uses:

Sign-in storage. Our sign-in provider, Auth0, saves tokens in your browser's local storage so that you stay signed in. This is strictly necessary.
App settings. Small items in local or session storage, such as your selected brand or plan. These are strictly necessary for the app to work.
Support chat. The Intercom chat widget, which loads when you open the app and may save cookies or local storage so that your conversation continues.
Page-view measurement. Google Analytics, through Firebase, which loads when you open the app and sets cookies whose names start with _ga.
Product analytics. PostHog (servers in the European Union). It stays off until you accept it in the app's consent banner. If you accept, it may use a cookie and local storage to recognise you between visits.
Consent banner. The app may show a consent banner (Cookiebot). It saves one cookie, named CookieConsent, to remember your choice.
Fonts. The app loads fonts from Google, which means your IP address is sent to Google.

You can block or delete any of these in your browser settings. If you block the support chat or analytics items, the app still works. If you block the sign-in items, you cannot sign in.

The layermetry SDK

The layermetry SDK is software that our customers put in their own websites and apps. The SDK itself does not write cookies. It does save items in the browser's local storage and IndexedDB, for example your editor preferences, your undo history, and a receipt from the licence check. These stay on the device of the person using the editor. The company that built the website or app decides what else it adds. That company is responsible for its own cookie policy.

Third-party content

If a page of ours includes content from another company, such as a video or a map, that company may set cookies of its own. At the time of writing the main pages of our website do not include such content. Our documentation (/docs) and blog (/blog) are published with hosting partners (Mintlify and Ghost). Those pages may save small items of their own, such as a theme or search setting. We will list them here once we have confirmed them.

Consent tools

Our consent banner saves one small cookie to remember your choice. On our website (layermetry.com), we use a tool that needs your permission only after you have given it in the banner. We do not use advertising cookies today. If we add them, we will list them here and ask for your permission first.

How to control cookies

Use your browser settings to block or delete cookies and local storage. Most browsers let you do this for all sites or for one site. If you block everything, some features, such as sign-in and your language choice, will stop working.
If a consent banner has been shown to you, you can change your choice later by deleting its cookie in your browser. The banner then appears again.
You can email hello@layermetry.com with any question or objection.

Changes

We will update this page when what we store changes. The date at the top shows when the page last changed.

Contact

Distra Labs Limited, trading as layermetry. Registered office: 66 Paul Street, London, EC2A 4NA, United Kingdom. Email: hello@layermetry.com.