Cookie Policy
Effective 2026-08-29
This page lists everything Meter Health stores on your device, what each item is for, and how long it lasts. Most of it is required for the service to work at all. Two categories are not, and you can turn either off independently — see Your choices below.
1. What is stored on your device
| Name | What it is for | How long it lasts | Category |
|---|---|---|---|
auth |
Keeps you signed in. Without it every page would ask you to log in again. | 14 days | Necessary |
session |
Holds the answer to the sign-up puzzle while you are filling the form in. Set only on the registration page. | Until you close the browser | Necessary |
cc |
A random identifier for the record of your choices on this page. It is how a decision to turn an optional category off is remembered when you do not have an account — without it we would have to ask you again on every page. | 1 year | Necessary |
th3 |
Remembers whether you chose light or dark, so the page can be painted in the right colours before it finishes loading. Turning this off costs you a brief flash of the default colours when a page first opens; it does not change your saved setting. | 14 days | Preference |
protocolTimeline.* |
Browser storage, not cookies, and never sent to the server. Remembers which sections of the History timeline you had open, which tab you were on and what you had filtered to, so the page looks the same when you come back to it. | Until you clear it | Preference |
mh_plot_draft |
Remembers the graph plot you were building on the Analytics page, so it is still there when you come back. Stores your choices, not your data. | Until you clear it | Preference |
meter.dataTools.reloaded |
Browser storage, not a cookie, and never sent to the server. Carries a one-line status message across a page reload after you import or delete data, so the page can tell you what happened. It is read once and removed immediately. | Read once, then removed | Necessary |
att |
Records how you first arrived — the campaign tags on the address you clicked, the site that referred you, the page you landed on, and when — together with a random identifier so that several visits from this browser count as one person rather than several. It is written once, on your first visit, and is never changed afterwards. It lets us tell which advertising actually brings people here. It is first-party: no other company is given it or told about your visit, and the identifier is not linked to anything you have typed in. | 90 days | Analytics |
__stripe_mid__stripe_sid |
Set by Stripe, our payment processor, for fraud prevention. They appear only on the subscription page and only while you are paying. We do not set or read them. | Set by Stripe | Necessary |
2. What this site does not do
No third party is told which pages you visit. There is no advertising network on this site, no cross-site tracking, and nothing here follows you to another site. The only outside company any page contacts is Stripe, on the subscription page, when you are paying. We do measure how people reach us and which pages of this public site they open, using one first-party cookie written on your first visit and read by nobody but us. Those individual records are deleted after 90 days, leaving only daily totals that are not tied to anyone, and you can turn the whole thing off below.
We do not sell your personal information, and we do not share it for cross-context behavioural advertising. There is nothing to opt out of, because it does not happen.
3. Your choices
- The notice shown the first time you arrive lets you accept or decline both optional categories at once. Necessary items are not affected either way.
- If you have an account, both switches are on your profile under Cookies and storage, and they move independently — you can keep display preferences and refuse the arrival record, or the other way round. You can change either as often as you like, and every change is recorded with the date.
- Your browser can block or clear cookies for this site. Clearing the necessary ones will sign you out and, if you had declined an optional category without an account, will make this site ask you again.
4. Global Privacy Control
If your browser sends a Global Privacy Control signal, we treat it as declining both optional categories and record it. You do not have to do anything else. If you later turn either back on from your profile, that choice is the one we honour — a signal your browser sends for every site does not override an answer you gave for this one.
5. Changes to this Policy
If what we store changes, this page changes with it and the effective date above moves. A change that widens what is stored will ask you again rather than assume your previous answer still applies.
6. Contact
Questions about this page can be sent to the support address in the Privacy Policy.
See also the Privacy Policy.
See also the Terms of Use.