Privacy policy
Last updated: August 16, 2026
In short
Comparr is a product comparison service. You do not need to create an account and we never ask for your identity to browse the site. We measure traffic, we know which offers are clicked, and that is about it. We do not sell data.
Data controller
The data controller is the site publisher, identified on the Legal notice page. For any question or to exercise your rights: hello@comparr.fr.
Data collected and purposes
1. Audience measurement
We use Google Analytics 4 to understand which pages are viewed and how the site is used. We process: page views, traffic source (search engine, AI assistant, direct link), device and browser type, and a measurement identifier stored in a cookie.
- Legal basis : legitimate interest in measuring and improving the service.
- Recipient : Google LLC.
- Retention : up to 14 months.
2. Clicks on retailer offers
When you click "View offer", we record the event to understand which offers interest visitors and to detect automated traffic. We process: the offer clicked, the date, country and region inferred from the IP address, the referring page and the browser user-agent.
- The IP address is not stored in plain text: it is used only to infer approximate location (country / region), then discarded.
- Legal basis : legitimate interest (activity measurement, click-fraud prevention).
- Retention : 25 months.
3. Feedback form and product suggestions
If you write to us via the "Help us improve" widget or suggest a product, we keep your message, the page concerned and — only if you provide it, this is optional — your email address, to reply to you. Your IP address is kept temporarily to limit spam.
- Legal basis : your consent (voluntary form submission).
- Retention : 24 months, or until you request deletion.
4. Searches
Queries entered in the search bar are saved and become public comparison pages. They are not linked to any visitor: do not enter personal information.
Cookies
| Cookie | Purpose | Duration |
|---|---|---|
_ga, _ga_* | Google Analytics audience measurement | 13 months |
comparr_ai_source | Remembers if you arrived from an AI assistant | 30 days |
comparr_no_track | Voluntary opt-out of measurement | 2 years |
| Session cookie | Site security (CSRF protection) | Session |
You can refuse or delete cookies in your browser settings, and enable the Do Not Track signal. The site remains fully usable without them.
Affiliate links
Some retailer links are affiliate links (including Amazon Associates): if you buy, we earn a commission, at no extra cost to you and with no effect on our rankings. These links add a tracking identifier so the retailer can attribute the sale to Comparr. Once on the retailer's site, their own privacy policy applies.
Sub-processors and hosting
The site is hosted by Railway Corp. (United States). We use technical providers for product analysis and price collection (Google Gemini, price aggregation services): no personal data is sent to them — only product names and queries. Cross-border transfers are governed by standard contractual clauses where applicable.
Your rights
Depending on applicable law, you may have rights of access, correction, deletion, restriction, objection and portability. Email hello@comparr.fr: we respond within 30 days. California residents may have additional rights under the CCPA.
Changes
This policy may be updated. The date at the top of the page indicates the current version.