Privacy policy

Depending on how you use cppinterview, we may process account information, learning activity, content submitted to AI features and technical data needed to secure the service.

• Email, display name and identifiers from sign-in providers.
• Progress, review schedules, answers and mock-interview results.
• AI prompts, generated responses and error diagnostics.
• Session cookies, language preference and rate-limit or anti-abuse identifiers.

When you buy Premium, cppinterview stores transaction identifiers, provider, plan, amount, currency, status and access dates. Lemon Squeezy or payOS directly processes card, bank-account and payment details; cppinterview does not store full card numbers, CVCs, banking passwords or OTPs.

We use data to authenticate accounts, save progress, deliver content and AI features, confirm Premium access, provide support, prevent fraud and keep the service reliable. cppinterview does not sell your personal data.

cppinterview uses infrastructure, authentication, database, AI and payment providers to operate the product. They receive only the data needed for the relevant function and process it under their own terms and policies. Processing may take place outside Vietnam.

We retain data as needed to provide the service, resolve disputes, prevent abuse and satisfy legal obligations. You may request access, correction or deletion by emailing support. Some transaction records may need to be retained to meet legal or payment-provider requirements.