Privacy Notice
Last updated 13 September 2026
Who we are
Subtitle Studio is operated by Quantum Build Consultancy limited, registered in Ireland. We are the data controller for the personal data described here, which means we decide how and why it is used.
What we collect and why
- Account details — your email address and sign-in credentials, so we can create and secure your account. Legal basis: performance of our contract with you.
- Videos, transcripts and translations — the files you upload and the subtitles produced from them, so we can deliver the service. These may contain personal data about people appearing or speaking in your video; you are responsible for having the right to upload them. Legal basis: performance of our contract with you.
- Usage and token records — how many minutes you process, your token balance and history, so we can bill correctly and support you. Legal basis: contract and our legitimate interest in running the business.
- Technical data — IP address, device and browser information, and error logs, for security, fraud prevention and improving the product. Legal basis: our legitimate interest in keeping the service safe and reliable.
- Support messages — what you send us when you ask for help. Legal basis: contract and legitimate interest.
Who we share it with
- Service providers who host our application and database, and the speech and translation providers that process your audio and text on our instructions.
- Paddle.com, our Merchant of Record, for the sale of token packs, payments, invoicing, tax compliance and refunds. Paddle collects your payment details directly; we never see your card number.
- Professional advisers such as accountants and lawyers.
- Authorities where we are required to by law.
International transfers
Some of our providers are outside the UK and EEA. Where that happens we rely on adequacy decisions or Standard Contractual Clauses to protect your data.
How long we keep it
Your videos and subtitles are kept until you delete them or close your account. Account and billing records are kept for as long as the law requires, normally seven years. Technical logs are kept for a short period. After that, data is deleted or anonymised.
Your rights
Under the GDPR you can ask for access to your data, correction, erasure, restriction, portability, and you can object to processing based on legitimate interests or withdraw consent where we rely on it. Contact us at the address published on our website and we will respond within one month. You can also complain to your supervisory authority; in Ireland that is the Data Protection Commission.
Security
Your videos are stored privately and are only accessible to your account. We use encryption in transit, access controls and other appropriate technical and organisational measures to protect your data.
Cookies
We use essential cookies and similar browser storage to keep you signed in and to process payments securely. We do not use advertising cookies. You can clear or block cookies in your browser, but the service will not work properly without the essential ones.
See also our Terms & Conditions and Refund Policy.