Privacy Policy
Last updated 19 October 2026
This policy explains what information TCG Trainer ("we", "us") collects when you use this site and the game tracker, why, and what you can do about it.
Who we are
TCG Trainer is a free hobby project run by an individual in the United Kingdom, who is the data controller for your information. Contact: hello@tcgtrainer.app.
What we collect
- Account details: your email address and username, and your name if you give one. Sign-in is handled by Clerk (see below).
- What you log: tournaments, games, decks, results, decklists, notes, and any opponent names you choose to enter.
- Analytics, only if you accept cookies: pages visited, rough location (country or city), device and browser type, and how you found the site, collected by Google Analytics.
- Technical logs: our hosting provider keeps short-lived server logs, such as IP address and request time, to keep the site running and secure.
We don't collect payment details, and we don't sell your data or use it for advertising.
Why we use it, and our legal basis
| Purpose | Legal basis (UK GDPR) |
|---|---|
| Creating your account and letting you sign in | Contract: needed to provide the service you signed up for |
| Storing and showing the games you log, and working out your stats | Contract |
| Understanding how the site is used so we can improve it | Consent: only if you accept analytics cookies |
| Keeping the site secure and preventing abuse | Legitimate interests |
| Replying when you contact us | Legitimate interests |
Who we share it with
We use a small number of service providers who process data on our behalf:
- Clerk (clerk.com): account sign-up and sign-in.
- Cloudflare (cloudflare.com): hosting the site and storing your tracker data.
- Google (Google Analytics): site analytics, only if you accept analytics cookies.
We may also disclose information if the law requires it. Nobody else sees your logged games.
International transfers
These providers are based in the United States, so your data may be processed outside the UK. They protect transfers using recognised safeguards, such as the UK Extension to the EU–US Data Privacy Framework or the UK's approved data transfer agreements.
How long we keep it
- Account and tracker data: until you delete it or ask us to delete your account.
- Analytics data: up to 14 months, then deleted automatically by Google Analytics.
- Server logs: kept briefly by our hosting provider for security, then deleted.
Information about other people
If you record an opponent's name, please use a first name or nickname only. Opponent names are visible only to you. If someone asks you to remove their name, please delete it. You can edit any game to do this.
Your rights
Under UK data protection law you can:
- get a copy of your data. You can export all your games as CSV from the Games tab at any time
- have inaccurate data corrected
- have your data and account deleted
- object to, or ask us to limit, how we use your data
- take your data to another service
- withdraw your consent to analytics at any time with Cookie settings
To use any of these rights, email hello@tcgtrainer.app. We'll reply within one month. If you're unhappy with how we handle your data, you can complain to the Information Commissioner's Office at ico.org.uk.
Children
You must be 13 or older to create an account. If you believe a child under 13 has signed up, contact us and we'll delete the account.
Cookies
Cookies are small files a website stores in your browser. We use two kinds:
| Cookie | Set by | Purpose | Kept for |
|---|---|---|---|
__session, __client_uat and similar | Clerk | Essential. Keeps you signed in. No consent needed: the tracker can't work without them. | Your session, up to the length of your sign-in |
_ga, _ga_<ID> | Google Analytics | Analytics. Counts visits and shows how the site is used. Only set if you click Accept. | Up to 2 years |
We also save your cookie choice in your browser's local storage (cookie-consent), so we don't ask again on every visit. You can change your choice at any time with Cookie settings, or by clearing this site's data in your browser.
Changes to this policy
If we change this policy we'll update the date at the top. For significant changes we'll let signed-in users know on the site.