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    Checkmate — Privacy Policy

    Last updated: 2 July 2026

    1. Who we are

    Checkmate (“Checkmate”, “we”, “us”, “our”) is a UK sole trader business providing an AI-powered accountability coaching service delivered over WhatsApp, trading from Keyhaven Road, Keyhaven, Lymington, Hampshire, SO41 0TH.

    For the purposes of UK data protection law (the UK GDPR and the Data Protection Act 2018), Checkmate is the “controller” of the personal data described in this policy.

    If you have any questions about this policy or how we handle your data, contact us at info@checkmatepartner.io.

    2. Scope

    This policy applies to anyone who visits checkmatepartner.io, joins the Checkmate waitlist, signs up for the Checkmate service, or exchanges WhatsApp messages with a Checkmate coach.

    3. Information we collect

    3.1 Information you give us

    • Your name, email address, and mobile phone number, when you join our waitlist or sign up.
    • Your answers to our intake quiz, which we use to match you with a coach.
    • Messages you send to your coach on WhatsApp, including check-in responses and anything else you choose to share.
    • Payment details when you subscribe. We do not see or store your card details — these are collected and processed directly by Stripe, our payment provider.

    3.2 Information created through your use of Checkmate

    • Your conversation history with your coach, including AI-generated responses and the periodic summaries we build so your coach remembers context between sessions.
    • Timing and delivery data, such as when check-ins are sent and whether messages are delivered or read.
    • Your subscription and billing status.

    3.3 Information from third parties

    • Payment confirmation and subscription status from Stripe.
    • Message delivery status from WhatsApp/Meta.

    4. How we use your information, and our legal basis

    We use your personal data to:

    • Provide the coaching service — sending check-ins, generating AI coach responses, and building the memory that lets your coach pick up where you left off (necessary to perform our contract with you).
    • Process your subscription payment and match you with a coach (necessary to perform our contract with you).
    • Send you service messages, such as billing or account issues (necessary to perform our contract with you, or our legitimate interest in running the service).
    • Improve and troubleshoot Checkmate, including reviewing conversation data to fix problems (our legitimate interest in keeping the service working properly).
    • Send you optional marketing or product updates — only where you have separately opted in, and which you can withdraw at any time.
    • Comply with our legal obligations, such as keeping tax and accounting records.

    5. Automated messaging and AI processing

    Checkmate is built around automated, AI-generated coaching. When you message your coach on WhatsApp:

    • Your message is sent to our workflow system (n8n) and stored in our database (Supabase).
    • The conversation is sent to Anthropic's Claude AI model, via Anthropic's API, to generate your coach's reply. Under Anthropic's standard commercial API terms, this data is not used to train Anthropic's models.
    • We keep a rolling window of your recent messages plus a periodically-updated summary, so your coach retains context about you over time.

    By using Checkmate, you consent to your messages being processed in this way in order to receive the service.

    6. Who we share your data with

    We use the following third-party providers (“processors”) to run Checkmate. They only process your data on our instructions, for the purposes described above:

    • GoHighLevel (GHL) — our CRM and WhatsApp messaging platform, used to manage your contact record and send/receive WhatsApp messages.
    • n8n — the automation platform that routes your messages and runs scheduled check-ins.
    • Supabase — our database provider, where your conversation history and account data are stored.
    • Anthropic — provider of the Claude AI model that generates coach responses.
    • Stripe — our payment processor, which handles your card details and billing.
    • Meta/WhatsApp — the messaging platform your conversations are sent through.

    We do not sell your personal data, and we do not share it with anyone else except where required by law.

    7. International data transfers

    Some of our providers, including Anthropic, Stripe, Supabase and Meta, may store or process data outside the UK, including in the United States. Where this happens, we rely on appropriate safeguards recognised under UK data protection law, such as Standard Contractual Clauses or the provider's own compliance with UK adequacy arrangements.

    8. How long we keep your data

    We keep your account and conversation data for as long as you have an active Checkmate subscription, and for up to 90 days afterwards in case you resubscribe or we need it to resolve a dispute. Payment records are kept for as long as required by UK tax law (currently 6 years). Waitlist data for people who never subscribe is kept for up to 12 months, after which it is deleted unless you ask us to keep it or you convert to a paying subscriber. You can ask us to delete your data sooner — see Section 9.

    9. Your rights

    Under UK data protection law, you have the right to:

    • Access the personal data we hold about you.
    • Correct inaccurate or incomplete data.
    • Ask us to delete your data.
    • Restrict or object to how we use your data.
    • Receive a copy of your data in a portable format.
    • Withdraw consent at any time, where we rely on consent.
    • Complain to the Information Commissioner's Office (ICO) at ico.org.uk if you think we've mishandled your data.

    To exercise any of these rights, email info@checkmatepartner.io. We aim to respond within one month. You can also reply “STOP” to any WhatsApp message to opt out of further messages at any time.

    10. Keeping your data secure

    We use reputable, security-conscious providers to store and process your data, and limit access to what's needed to run the service. No system is completely secure, but we take reasonable technical and organisational steps to protect your information.

    11. Cookies and website data

    checkmatepartner.io may use cookies or similar technologies needed for the site and our forms to function correctly. If we add analytics or advertising cookies in future, we'll update this policy and, where required, ask for your consent first.

    12. Age restriction

    Checkmate is intended for adults. You must be at least 18 years old to sign up. We do not knowingly collect data from anyone under 18.

    13. Not a substitute for professional advice

    Checkmate is an AI accountability tool designed to help with consistency and follow-through. It is not a replacement for professional mental health services, medical advice, or business, financial or legal consulting.

    14. Changes to this policy

    We may update this policy from time to time. We'll post the updated version on checkmatepartner.io with a new “last updated” date.

    15. Contact us

    Checkmate
    Keyhaven, Lymington, Hampshire, SO41 0TH
    info@checkmatepartner.io