Cookie Policy
Last updated: 22 August 2026
Arvo sets only the cookies needed to sign you in and keep the service secure. No advertising cookies, no cross-site tracking, and nothing that follows you to other sites.
1. About cookies
Cookies are small files a site stores on your device. Some are essential to make it work, for example to keep you signed in. Others are used for analytics or advertising. This policy covers the ones Arvo uses.
2. Our approach
Every cookie below is strictly necessary. Because none of them are used for advertising or analytics, there is no consent banner to click and nothing to opt out of. Blocking them will stop you being able to sign in.
We do measure page views and page speed, but with Vercel Analytics and Speed Insights, which are cookieless and set no identifier that can follow you between sites. That is the reason we use them rather than a conventional analytics product.
3. Cookies we set
| Cookie | Purpose | Roughly how long | Type |
|---|---|---|---|
| __client | Set by Clerk, our authentication provider, to hold the signed-in session | Session | Essential |
| __client_uat | Set by Clerk. Records when the session was last updated so the site knows whether to refresh it. Set on every page, including before you sign in | Session | Essential |
| __cf_bm | Set by Cloudflare on Clerk’s behalf to tell real visitors from bots and protect the sign-in page | About 30 minutes | Essential |
| _cfuvid | Set by Cloudflare on Clerk’s behalf to apply rate limits fairly. Not used to profile you or follow you across sites | Session | Essential |
4. Third-party services
Sign-in is handled by Clerk, which uses Cloudflare to keep bots away from the login page; between them they set every cookie in the table above. Hosting and our cookie-free traffic measurement are provided by Vercel. The full list of providers is in our Privacy Policy.
5. Managing cookies
You can control or delete cookies in your browser settings. Blocking the ones above will stop you signing in to Arvo. Since we use no advertising or analytics cookies, there is nothing else to turn off.
6. Changes and contact
We will update this page if the cookies change, and the date at the top will change with it. Questions go to hello@arvosystem.com.