Privacy Policy

Last updated: June 2026
The short version: We do not store your messages. They are analysed and then permanently deleted. You don't need an account. We never sell your data.

Who we are

Check1st (check1st.uk) is a dating-safety tool that analyses messages for manipulation patterns. Check1st is operated by the same data controller as MyCaseOrganiser, registered with the UK Information Commissioner's Office (ICO) under registration number C1943349.

Contact: hello@check1st.uk

What we collect

How we use it

Solely to provide the analysis you requested. We do not use your data for advertising. We do not sell it. We do not share it except with the processors below.

Anonymisation

Before any analysis, participant names in your messages are automatically replaced with neutral labels (Person A, Person B). The AI analysis is performed on this anonymised version, so the analysis cannot be biased by who submitted it. Real names are only restored in the result shown back to you.

AI processing (OpenAI)

The anonymised text is sent to OpenAI's API to perform the analysis. OpenAI's API policy states this data is not used to train their models. Under their standard policy, content may be retained by OpenAI for a limited period (up to 30 days) solely for abuse monitoring, then deleted.

Data retention

Where your data is held & security

Data is held on secure servers within the European Union (Finland), under UK GDPR-equivalent protection. All data is encrypted in transit using TLS/HTTPS. Access to production systems is restricted to authorised personnel only.

Special category data

Messages may contain sensitive personal data (for example about relationships, health, or abuse). This is special category data under UK GDPR. Our legal basis for processing is your explicit consent, given when you submit messages for a scan. You should only submit conversations you are a party to.

Your rights

Under UK GDPR you can: access the data we hold about you, request correction or deletion, withdraw consent, and complain to the ICO at ico.org.uk. Because we do not store your messages and results auto-delete after 30 days, there is normally no stored personal data to act on. Contact hello@check1st.uk.

Age

Check1st is for adults aged 18 and over.

Changes

The current version of this policy is always available at check1st.uk/privacy.