Cookie Policy
What cookies and similar technologies we use across CircleDiary, and the controls available to you.
2. How We Use Cookies
We use cookies to:
- Keep you signed in and secure your session.
- Remember your preferences (theme, language, time zone).
- Understand how the product is used so we can improve it.
- Measure the performance of our marketing and content.
- Detect and prevent fraud, abuse, and security incidents.
3. Types of Cookies We Use
Strictly necessary
Required for the Service to work. They cannot be switched off in our systems. They are usually set in response to actions you take, such as signing in or filling in forms.
| Name | Provider | Purpose | Duration |
|---|---|---|---|
| cd_session | CircleDiary | Maintains your signed-in session | Session |
| cd_csrf | CircleDiary | Cross-site request forgery protection | Session |
| cd_auth | CircleDiary | Authenticated access token | 30 days |
| __cf_bm | Cloudflare | Bot mitigation | 30 minutes |
Functional
Enable enhanced functionality and personalization. If you disable these, some features may not work properly.
| Name | Provider | Purpose | Duration |
|---|---|---|---|
| cd_theme | CircleDiary | Light/dark mode preference | 1 year |
| cd_locale | CircleDiary | Language preference | 1 year |
| cd_tz | CircleDiary | Time-zone preference for scheduling | 1 year |
Analytics
Help us understand how visitors interact with the Service so we can improve it. Set only with your consent.
| Name | Provider | Purpose | Duration |
|---|---|---|---|
| ph_* | PostHog | Product analytics & session replay | 1 year |
| _ga, _ga_* | Google Analytics 4 | Aggregated traffic analytics | 2 years |
Marketing
Used to measure marketing campaigns and, on our public site only, deliver relevant ads. Set only with your consent.
| Name | Provider | Purpose | Duration |
|---|---|---|---|
| _fbp | Meta | Campaign attribution | 90 days |
| li_at, bcookie | Campaign attribution & conversion | 1 year |
4. Third-Party Cookies
Some cookies are set by third parties we use to operate the Service. They are governed by those providers' own privacy policies:
- Stripe — payment processing and fraud detection.
- Cloudflare — performance, DDoS protection, and bot mitigation.
- PostHog & Google Analytics — product and traffic analytics.
- Intercom — in-app customer support chat.
- Meta & LinkedIn — campaign measurement on marketing pages.
5. Your Choices
You can control non-essential cookies at any time:
- Cookie banner: use "Cookie Settings" in the footer to change your consent.
- Browser settings: most browsers let you block, delete, or limit cookies — see allaboutcookies.org for guides.
- Global Privacy Control: we honor GPC signals as a valid opt-out of "sale/sharing" under US state privacy laws.
- Do Not Track: browsers handle this inconsistently, so we follow your in-product consent choices instead.
Disabling strictly necessary cookies will break core features like signing in.
6. Impact of Disabling Cookies
If you disable or block cookies, parts of the Service may not function as intended — for example, you may be signed out unexpectedly, lose your preferences, or see less relevant marketing. Strictly necessary cookies cannot be disabled because the Service cannot work without them.
7. Updates to This Policy
We may update this Cookie Policy to reflect changes in technology, regulation, or our Service. Material changes will be flagged in-app and the "Last updated" date at the top of this page will change. We encourage you to review this policy periodically.
8. Contact Us
Questions about cookies or your consent choices?
- Email: privacy@circlediary.com
- Mail: CircleDiary, Inc. — Attn: Privacy, 123 AI Street, San Francisco, CA 94105, USA
Have questions about this policy?
privacy@circlediary.com