Privacy Policy

The short version

LevelerPro is a static web page. It has no accounts and no sign-up. Your tilt readings are calculated inside your browser and are never sent to us or to anyone else. We do run Google Analytics, which counts page visits and sets a cookie to tell a returning visit from a new one, and Google AdSense, which serves the ads that pay for the site and may set cookies of its own. Everything else the tool remembers is a few preferences saved in your own browser, which you can clear at any time.

What we collect

Nothing you type or measure. We do not ask for your name, email address, phone number, or location, and there is no form on this site that submits data to us. We do not run session recording or fingerprinting scripts, and no tilt reading is ever collected. The site does carry advertising, which has its own section below.

What we do collect is anonymous visit statistics, described in the next section. Because there is no account system, there is no profile to export or delete, and nothing in those statistics is tied to a name.

Analytics and cookies

This site loads Google Analytics 4 so we can see how many people use the tool and which pages they land on. It is one of the two third-party scripts on the site — advertising is the other — and it runs on every page.

It records the page you viewed, roughly when, the referring link if there was one, your approximate location from your IP address at around city level, and general device details such as browser, operating system, and screen size. Google discards the full IP address rather than storing it alongside the report. To recognise a repeat visit, the script writes cookies named _ga and _ga_<id> to your browser. Those are the only cookies this site sets itself; the advertising section below covers the ones Google’s ad script may set.

Your tilt readings, your calibration offset, and your settings are not part of this. Nothing from the leveler itself is sent to Google. If you would rather not be counted, any content blocker or privacy browser that blocks googletagmanager.com stops the script from loading, and the tool works exactly the same without it. Google also publishes an official opt-out browser add-on, and its own explanation of how it handles data from sites that use its services.

Advertising

This site carries advertising, and that is what pays for it. The ads are served by Google AdSense, which is the second and last third-party script on the page.

Google and its advertising partners use cookies to choose and measure the ads you see, which can include ads based on your previous visits to this or other websites. Those cookies are set by Google’s own domains rather than by us, and we never see them: we receive a report of how the ads performed, and nothing that identifies you.

You can turn off personalised advertising in Google’s My Ad Center, and review the wider opt-outs at aboutads.info. Google’s own account of how it uses cookies in advertising is on its advertising technologies page. As with the analytics script, a content blocker that blocks googlesyndication.com stops the ads from loading, and the leveler works exactly the same without them.

Nothing from the instrument itself is part of this. Your tilt readings, your calibration offset, and your settings are never sent to Google or to an advertiser, and the ads are chosen without them.

What stays on your device

So the leveler opens the way you left it, two values are written to your browser’s local storage. Local storage is not a cookie: it is never attached to a network request, so it cannot travel to a server.

• levelerpro:settings holds your vial placement, unit choice, vial range, the invert-axes setting, and your calibration offset.
• levelerpro:theme holds whether you picked the light or dark theme.

Your vial placement also appears in the page address, in the form ?edges=top,left&eye=1, so you can bookmark or share a particular layout. That address is handled by your browser like any other URL.

Clearing site data for levelerpro.com in your browser settings removes all of it, and the tool returns to its defaults.

Motion and orientation data

To show a live reading, the page asks your browser for the device orientation signal. On iPhone and iPad you have to grant that explicitly, which is why there is an Enable Motion Sensor button. On Android it is granted automatically over a secure connection.

That signal is used for one thing: working out which way the bubble should move. It is filtered, drawn on screen, and discarded frame by frame. It is not recorded, not stored, and not transmitted. If you deny the permission, the tool falls back to a drag preview and nothing else changes.

Third parties

Google Analytics and Google AdSense are the two third parties involved, and their roles are limited to the visit statistics and the advertising described above. There are no embedded videos, social widgets, or comment systems. The fonts are self-hosted from our own domain rather than loaded from a font service, and the hosting provider serves the pages themselves.

We do not sell or rent data to anyone, and the analytics data is not shared onward beyond Google’s role in producing the reports.

Server logs

The site is served by a hosting provider, and like almost every web host it may create standard request logs. These typically record an IP address, a user agent string, the page requested, and a timestamp, and they exist for security and reliability rather than for marketing. We do not use those logs to build profiles or to identify individuals, and we do not combine them with anything else.

Your choices

You can clear the stored preferences and the analytics cookies at any time through your browser’s site data settings. You can block the analytics script with a content blocker, as described above. You can revoke motion access in your browser’s site permissions. You can use the tool with JavaScript restricted, though the vials will not read without it. We hold no name, email address, or account for you, so requests to access, correct, or erase personal data have very little to act on, but you are welcome to get in touch and we will confirm what we do and do not have.

Changes

If this policy changes, the date at the top of the page changes with it. If we ever add something that collects more than the visit statistics described here, this page will say so before it ships rather than after.

Contact

Questions about this policy can go to admin@levelerpro.com, or through the contact page.