Last updated: 20 October 2026
1. Who is responsible for your information
CambridgePreparationAI is operated by MATIJA NIKOLIĆ PREDUZETNIK STUDIO ZA ENGLESKI JEZIK BEHEARD CLUB ARILJE, a registered entrepreneur in the Republic of Serbia.
Business registration number / Matični broj: 67892674
Tax identification number / PIB: 114838440
Registered business address: SLOBODANA PENEZIĆA KRCUNA 25, 31230 ARILJE, Serbia
Email: support@cambridgepreparation.ai
Website: https://cambridgepreparation.ai
CambridgePreparationAI is the controller responsible for personal data handled through the CambridgePreparationAI website and platform, unless a third-party provider acts as an independent controller for its own service, such as payment processing.
CambridgePreparationAI is an independent English practice platform focused on structured Reading & Use of English and Writing practice for B2, C1, and C2 learners. The service provides digital practice materials, guided practice flows, saved work tools, and feedback features.
All exercises and their related passages, prompts, questions, answer options, answer keys, model answers, explanations, scoring guidance, and feedback made available through CambridgePreparationAI are created using artificial intelligence. Content may be reviewed or edited, but it remains AI-generated and may contain errors, omissions, inconsistencies, or material that is unsuitable for a particular learner or purpose.
The exercises are independently generated and are not official Cambridge English materials. They are not official past papers, sample papers, question banks, answer keys, marking schemes, or publications supplied, reviewed, approved, endorsed, or authorised by Cambridge University Press & Assessment, Cambridge English, the University of Cambridge, or any of their affiliates.
CambridgePreparationAI is an independent exam-preparation platform. It is not part of, affiliated with, endorsed by, or approved by Cambridge University Press & Assessment, Cambridge English, the University of Cambridge, or any of their affiliates. It is not an official Cambridge English product, exam centre, or preparation centre.
Cambridge, Cambridge English, and related names and marks belong to their respective owners. References to third-party exams or qualifications are descriptive only and do not imply sponsorship, endorsement, or official status.
Use of CambridgePreparationAI does not guarantee any score, grade, pass, certification, admission, improvement, or other result on any exam. Performance on the platform may not predict performance in an actual exam, and official exam content, format, difficulty, rules, and marking may differ. Users should consult the relevant official exam provider for current specifications, regulations, and official preparation materials.
2. Information we collect
The exact information we collect depends on how you use the service, whether you create an account, whether you use paid access, and whether you use AI-assisted features.
We may collect:
- Account information, such as your name, email address, authentication identifiers, and profile details.
- When you complete our customer survey, your supplied name and account email, answers, and optional permission for follow-up questions are delivered to the platform owner by email. We use this information to improve the service, verify an invitation, and arrange any promised reward. These survey responses are not saved in our Supabase database or published as testimonials.
- Usage and activity data, such as selected levels, exercises opened, progress data, saved drafts, attempts, timestamps, and interaction patterns inside the practice flow.
- With optional Analytics consent, page visits and estimated active time linked to your signed-in account, including visits without an exercise submission. These records include approved page paths, selected learning areas and exercise identifiers, timestamps, and the consent version. They exclude answers, essay text, full URLs, private query parameters, and authentication tokens.
- Browser, device, and log data, such as IP address, approximate location, browser type, operating system, referral data, cookie identifiers, session identifiers, and diagnostics created when you access the site.
- Android push-notification data, such as a Firebase Cloud Messaging registration token, an app installation identifier, notification preferences, time zone, delivery or open status, and reminder schedules you choose to create.
- Support and contact communications, including information you share when asking for help with billing, privacy, technical access, refunds, or account issues.
- Exercise submissions, written answers, draft content, notes, prompts, and related inputs you provide while using Reading & Use of English + Writing tools.
- AI-related inputs and outputs where applicable, including prompts, generated practice content, automated feedback, and related context needed to provide the AI-assisted feature.
- If you have submitted an AI-feedback report through a version offering reporting, its stored information includes the reason, optional note, a copy of the feedback, and a reference to the saved response.
- Payment-related information supplied through payment providers, such as selected access pass, payment status, invoices, billing history, checkout status, transaction identifiers, and limited transaction metadata.
Website payments are handled by Dodo Payments and Android in-app purchases are handled by Google Play. CambridgePreparationAI does not store full card numbers, full wallet credentials, full payment credentials, or raw card details. Those details are handled by the applicable payment provider.
Please avoid submitting sensitive personal information in your exercises, prompts, drafts, or support messages unless it is necessary for your request.
3. Why we use personal data
We use personal data to provide, maintain, secure, and improve CambridgePreparationAI.
We use personal data:
- to create and manage user accounts;
- to authenticate sign-ins and protect accounts;
- to provide free and paid learning features;
- to save progress, practice history, drafts, attempts, and learning activity;
- to generate practice content, explanations, and AI-assisted feedback requested by the user;
- to process one-time access-pass records, checkout status, payment confirmations, invoices, refunds, and billing-related account management;
- to send service communications such as verification emails, password reset emails, account notices, billing notices, policy updates, and important product messages;
- to register an Android device and deliver optional push notifications you enable, including learning reminders, feedback-ready alerts, and product or account updates;
- to respond to support, privacy, billing, refund, and technical requests;
- to monitor service quality, troubleshoot errors, prevent abuse, detect fraud, and protect the platform;
- to understand usage trends and improve product quality, including through de-identified or aggregated information where lawful;
- with Analytics consent, to let the platform owner review account-linked page visits and estimated active time for product improvement and support;
- to comply with legal, tax, accounting, security, and dispute-resolution obligations.
4. Legal bases for processing
Depending on the context, we process personal data on one or more of the following legal bases:
- Contract: when processing is necessary to provide the service you requested, manage your account, deliver paid access, save progress, or provide requested AI-assisted feedback.
- Legitimate interests: when processing is necessary to secure, maintain, debug, improve, and protect the platform, provided those interests are not overridden by your rights.
- Consent: when we ask for consent for a specific optional activity, such as certain cookies, analytics, or marketing where consent is required.
- Legal obligation: when processing is necessary for tax, accounting, consumer protection, legal claims, payment records, or compliance duties.
5. Service providers, processors, and payment handling
We use third-party providers to operate CambridgePreparationAI. These providers may process personal data for hosting, database services, authentication, storage, email delivery, security, diagnostics, AI functionality, analytics, checkout, payment processing, fraud prevention, invoicing, and customer support.
When you allow the relevant optional cookie category, Google may process website usage and campaign-measurement data through Google Analytics and Google Ads. More information is available at https://policies.google.com/privacy and https://policies.google.com/technologies/partner-sites.
Website payments are handled by Dodo Payments and Android in-app purchases are handled by Google Play. CambridgePreparationAI does not store your full card details on its servers. The applicable provider processes payment and billing information and supplies limited purchase information needed to activate access, provide support, prevent fraud, and maintain accounting records.
Dodo Payments acts as an independent controller for payment processing activities under its own terms. You can review Dodo Payments' Privacy Policy at https://dodopayments.com/privacy-policy and Buyer Terms at https://dodopayments.com/buyer-terms.
Google processes Android in-app purchase information under the Google Privacy Policy and Google Play or Google Payments terms. We receive purchase status, product, order, and account-linking identifiers needed to verify and deliver access.
We use Firebase Cloud Messaging, a Google service, to deliver Android push notifications. Firebase may process app and device metadata, Firebase installation information, and registration tokens needed to route a notification to the correct app installation.
Supabase stores account-linked push registration details, notification preferences, scheduling information, and limited delivery or open status so that we can operate reminders, respect your choices, troubleshoot delivery, and deactivate invalid registrations.
When you make a purchase, necessary information such as your name or account identifier, email address, selected access pass, payment status, and transaction identifiers may be shared with or received from Dodo Payments or Google Play to complete and verify the transaction.
Payment providers and merchants of record may process checkout details, payment verification, tax handling, fraud screening, receipts, chargebacks, and refund workflows under their own terms and privacy practices.
FormSubmit delivers customer survey responses to our email inbox and retains a submission archive for 30 days. The email copies remain with us for the purposes described in this policy. Provider details: https://formsubmit.co/documentation and https://formsubmit.co/privacy.pdf.
We do not sell personal data in exchange for money. We share personal data only as needed to run the platform, provide the service, meet legal obligations, enforce our terms, prevent abuse, protect users, or handle business operations.
We may also disclose information if required by law, legal process, tax authority request, court order, regulator request, payment dispute, fraud investigation, or to protect the rights, safety, and security of CambridgePreparationAI, users, or third parties.
7. AI-generated exercises and AI processing
All exercises and their related passages, prompts, questions, answer options, answer keys, model answers, explanations, scoring guidance, and feedback made available through CambridgePreparationAI are created using artificial intelligence. Content may be reviewed or edited, but it remains AI-generated and may contain errors, omissions, inconsistencies, or material that is unsuitable for a particular learner or purpose.
The exercises are independently generated and are not official Cambridge English materials. They are not official past papers, sample papers, question banks, answer keys, marking schemes, or publications supplied, reviewed, approved, endorsed, or authorised by Cambridge University Press & Assessment, Cambridge English, the University of Cambridge, or any of their affiliates.
When you use AI-powered features, the prompts, submissions, written answers, exercise context, or related information needed to generate output may be processed by AI or cloud-service providers acting for CambridgePreparationAI.
For writing feedback, we send your saved writing and relevant task context to OpenAI through our server. Avoid including sensitive personal information in your practice writing. Provider privacy information is available at https://openai.com/policies/privacy-policy/.
AI-assisted features may process your submissions to generate examples, explanations, feedback, corrections, learning suggestions, or other educational outputs.
Use of CambridgePreparationAI does not guarantee any score, grade, pass, certification, admission, improvement, or other result on any exam. Performance on the platform may not predict performance in an actual exam, and official exam content, format, difficulty, rules, and marking may differ. Users should consult the relevant official exam provider for current specifications, regulations, and official preparation materials.
8. International transfers
CambridgePreparationAI is operated from Serbia, but some service providers may store or process information in other countries.
When personal data is transferred internationally, we rely on appropriate contractual commitments, provider safeguards, internal controls, and other lawful transfer mechanisms where required.
9. How long we keep information
We keep personal data for as long as reasonably necessary to provide the service, maintain accounts, support billing and refund handling, resolve disputes, comply with legal obligations, enforce agreements, maintain security, and protect against fraud or abuse.
Retention periods vary by data type.
Account-linked page-activity records are stored in Supabase while your account exists, unless removed earlier following a deletion request. They are removed when your account is permanently deleted. Withdrawing Analytics stops new collection on that device but does not automatically erase previously saved activity.
Account details, practice records, drafts, written submissions, AI-related activity, and progress data may be kept while your account is active and for a reasonable period afterward.
Any AI-feedback reports you previously submitted are linked to your account and saved response. Their stored copy is removed when the account or the linked attempt is permanently deleted. A request to remove feedback or other specific data can also be sent to our support email.
Push registration tokens and notification preferences may be kept while the device registration or account remains active. Invalid or disabled registrations are deactivated, and limited notification delivery records may be retained for a reasonable period for reliability, security, and troubleshooting.
Billing metadata, invoices, payment records, tax records, dispute records, and security logs may be kept for longer where required or permitted for legal, tax, accounting, fraud-prevention, chargeback, or dispute-resolution reasons.
We may delete, anonymise, or aggregate information when it is no longer reasonably needed.
10. Your rights and choices
Subject to applicable law, you may have rights regarding your personal data, including the right to:
- request access to personal data we hold about you;
- request correction of inaccurate or incomplete data;
- request deletion of personal data;
- request restriction of certain processing;
- object to certain processing;
- withdraw consent where processing is based on consent;
- request a portable copy of certain personal data;
- complain to a competent data protection authority.
You can manage some information directly through your account. To delete your account and associated data, visit https://cambridgepreparation.ai/delete-account. To exercise another privacy right, contact support@cambridgepreparation.ai.
Android notifications are optional. You can turn notification categories off in your account settings or revoke notification permission in Android settings at any time.
You can disable account-linked page-activity collection on this device by turning off Analytics in Cookie Settings. Choices apply to the browser or app where they are saved. Active time is an estimate: it pauses when the page is hidden, loses focus, or has no interaction for 60 seconds, and does not establish that an exercise was completed.
We may ask you to verify your identity before responding to a request. We will respond within the timeframe required by applicable law.
If you are in Serbia, you may also have the right to contact the Commissioner for Information of Public Importance and Personal Data Protection. If you are in the EEA, UK, or another jurisdiction with data-protection rights, you may also have the right to contact your local supervisory authority.
11. Minors
CambridgePreparationAI is not designed for very young children.
If you are below the age at which you can independently consent to online services where you live, you may use CambridgePreparationAI only with involvement and consent from a parent or legal guardian.
Parents or guardians who believe a minor has provided personal data without appropriate consent can contact support@cambridgepreparation.ai.
12. Security
We use reasonable technical and organisational measures to protect personal data against unauthorised access, loss, misuse, alteration, and disclosure.
No online service can guarantee absolute security. You are responsible for keeping your login credentials secure and for notifying us if you suspect unauthorised access to your account.
13. Links to other websites
CambridgePreparationAI may contain links to third-party websites, checkout pages, payment providers, documentation, or external resources.
We are not responsible for the privacy practices, content, or security of third-party websites. You should review the privacy policies of those third parties before using their services.
14. Changes to this Privacy Policy
We may update this Privacy Policy as the service evolves or legal requirements change.
When we update it, we will publish the updated version on this page and update the “Last updated” date. Material changes may also be highlighted by email, account notice, or another reasonable method.
15. Contact
Questions about privacy, personal data, account access, billing, refunds, or this Privacy Policy can be sent to:
support@cambridgepreparation.ai
Business correspondence may be directed to:
MATIJA NIKOLIĆ PREDUZETNIK STUDIO ZA ENGLESKI JEZIK BEHEARD CLUB ARILJE
SLOBODANA PENEZIĆA KRCUNA 25
31230 ARILJE
Serbia
Business registration number / Matični broj: 67892674
Tax identification number / PIB: 114838440