Privacy Policy

This policy explains what information duplixo (“duplixo”, “we”, “us”) collects when you use our games, solvers, answer guides and word tools at duplixo.com, and the choices you have. We have tried to keep it plain.

The short version

You do not need an account to play, and nothing on duplixo is locked behind one. Your game progress and streaks are stored on your own device, not on our servers. You can optionally create an on-device account (a display name and, if you want the daily email, an address) — that is the only time we ask for personal details, and it is never required. The site is free to use. We measure usage with PostHog, which stores nothing on your device if you are in Europe.

Information we collect

Information you choose to give us

If you use the optional account page, the display name you set and any other profile detail are saved in your browser’s local storage and are not sent to us. If you choose to give an email address — on the account page or a newsletter form — it is sent to our email delivery provider so we can send you the daily puzzle email, and used only for that; you can unsubscribe at any time. If you email us (for a correction, a privacy request or general feedback) we receive your message and email address, and use them only to respond.

On-device storage

Your puzzle progress, streaks, statistics, theme preference and any account profile (such as a display name) are saved in your browser’s local storage. This data stays on your device, is not transmitted to us, and you can clear it at any time — from the account page’s reset control or through your browser settings.

Information collected automatically

• Log and device data — standard information such as IP address, browser type and pages viewed, used to operate and secure the site.
• Analytics — we use PostHog (hosted in the EU) to see which pages and puzzles are used, roughly where from and on what device, so we can improve the site. Outside Europe it may use a cookie or local storage to tell one visit from the next and may record anonymised session replays with typed text masked. In the EEA, the UK and Switzerland it runs without cookies, stored identifiers or replays. We honour your browser’s Do Not Track setting.
• Advertising — duplixo does not currently show ads or work with an advertising partner. If that changes, this policy will be updated first.

Cookies and consent

We do not show a cookie banner because we set no non-essential cookies where the law requires consent first: in the EEA, the UK and Switzerland our analytics runs without cookies or stored identifiers. Elsewhere, PostHog may set one first-party analytics cookie. Full detail is in our Cookie Policy.

How we use information

• To operate, secure and improve the site and its puzzles.
• To understand aggregate usage and measure performance.
• To respond to messages you send us.
• To send the daily puzzle email, if you asked for it, and to let you keep an optional on-device profile.
• To comply with legal obligations and enforce our terms.

Legal bases (for EEA/UK users)

We rely on our legitimate interests in securing the site and understanding aggregate usage (our analytics stores nothing on your device in Europe); on your consent for the daily email; and on legal obligation where the law requires it. You may withdraw consent at any time.

How information is shared

We do not sell or share your personal information for advertising. We share data only with providers acting on our behalf (PostHog for analytics, Vercel for hosting, and our email delivery provider if you sign up for the daily email), and where necessary to comply with law, protect rights and safety, or in connection with a business transfer.

Some pages carry Amazon affiliate links (as an Amazon Associate we earn from qualifying purchases). We send no personal data to Amazon; if you click one, Amazon handles your visit under its own privacy notice and may use cookies to attribute the purchase. Our analytics (PostHog) records that the link was clicked, the same way it records other page interactions.

Your rights

• EEA/UK: access, rectification, erasure, restriction, objection, portability, withdrawing consent, and lodging a complaint with your data protection authority.
• California: the right to know, delete and correct, to opt out of sale/sharing, and not to be discriminated against for exercising these rights.

Because any account you create lives on your own device rather than on our servers, most data we process is either on your device (which you can clear yourself, including from the account page) or held by our partners — such as our email delivery provider, for an address you chose to give — under their own controls. To make a request or ask a question, email our team .

Children

duplixo is a general-audience site intended for users aged 13 and over. It is not directed to children under 13 and we do not knowingly collect personal information from them. If you believe a child has provided us information, please contact us and we will delete it.

International transfers, retention and security

The site and our partners may process data in countries other than yours, with appropriate safeguards. We keep automatically collected data only as long as needed for the purposes above; on-device data is controlled by you. We use reasonable technical and organisational measures to protect information, though no method of transmission or storage is completely secure.

Changes

We may update this policy as the site or the law changes. We will revise the “last updated” date above and, for material changes, note them on the page.

Contact

Questions about this policy or your data? Reach us at our contact page or privacy@duplixo.com.