PRIVACY POLICY
- Visit our website
at https://www.worksheetcleaner.com or any website of ours that links to this Privacy Notice
- Use
Worksheet Cleaner .An app used to clean messy and dirty math worksheets and math exam papers, into editable documents. Primarily for math tuition teachers
- Engage with us in other related ways, including any marketing or events
SUMMARY OF KEY POINTS
TABLE OF CONTENTS
1. WHAT INFORMATION DO WE COLLECT?
Personal information you disclose to us
In Short: We collect personal information that you provide to us.email addresses
names
contact or authentication data
billing addresses
account login information
payment/subscription status
stripe customer id
uploaded worksheet/pdf files
generated worksheet/question content
usage data or processing history
Information automatically collected
In Short: Some information — such as your Internet Protocol (IP) address and/or browser and device characteristics — is collected automatically when you visit our Services.- Log and Usage Data. Log and usage data is service-related, diagnostic, usage, and performance information our servers automatically collect when you access or use our Services and which we record in log files. Depending on how you interact with us, this log data may include your IP address, device information, browser type, and settings and information about your activity in the Services (such as the date/time stamps associated with your usage, pages and files viewed, searches, and other actions you take such as which features you use), device event information (such as system activity, error reports (sometimes called
'crash dumps' ), and hardware settings).
- Device Data. We collect device data such as information about your computer, phone, tablet, or other device you use to access the Services. Depending on the device used, this device data may include information such as your IP address (or proxy server), device and application identification numbers, location, browser type, hardware model, Internet service provider and/or mobile carrier, operating system, and system configuration information.
- Location Data. We collect location data such as information about your device's location, which can be either precise or imprecise. How much information we collect depends on the type and settings of the device you use to access the Services. For example, we may use GPS and other technologies to collect geolocation data that tells us your current location (based on your IP address). You can opt out of allowing us to collect this information either by refusing access to the information or by disabling your Location setting on your device. However, if you choose to opt out, you may not be able to use certain aspects of the Services.
Google API
Our use of information received from Google APIs will adhere to Google API Services User Data Policy, including the Limited Use requirements.2. HOW DO WE PROCESS YOUR INFORMATION?
In Short: We process your information to provide, improve, and administer our Services, communicate with you, for security and fraud prevention, and to comply with law.- To facilitate account creation and authentication and otherwise manage user accounts. We may process your information so you can create and log in to your account, as well as keep your account in working order.
- To request feedback. We may process your information when necessary to request feedback and to contact you about your use of our Services.
- To send you marketing and promotional communications. We may process the personal information you send to us for our marketing purposes, if this is in accordance with your marketing preferences. You can opt out of our marketing emails at any time. For more information, see
' WHAT ARE YOUR PRIVACY RIGHTS? ' below.
- To protect our Services. We may process your information as part of our efforts to keep our Services safe and secure, including fraud monitoring and prevention.
- To identify usage trends. We may process information about how you use our Services to better understand how they are being used so we can improve them.
- To save or protect an individual's vital interest. We may process your information when necessary to save or protect an individual’s vital interest, such as to prevent harm.
3. WHAT LEGAL BASES DO WE RELY ON TO PROCESS YOUR INFORMATION?
In Short: We only process your personal information when we believe it is necessary and we have a valid legal reason (i.e.- Consent. We may process your information if you have given us permission (i.e.
consent) to use your personal information for a specific purpose. You can withdraw your consent at any time. Learn more about withdrawing your consent.
- Legitimate Interests. We may process your information when we believe it is reasonably necessary to achieve our legitimate business interests and those interests do not outweigh your interests and fundamental rights and freedoms. For example, we may process your personal information for some of the purposes described in order to:
- Send users information about special offers and discounts on our products and services
Analyse how our Services are used so we can improve them to engage and retain users
- Diagnose problems and/or prevent fraudulent activities
- Understand how our users use our products and services so we can improve user experience
- Legal Obligations. We may process your information where we believe it is necessary for compliance with our legal obligations, such as to cooperate with a law enforcement body or regulatory agency, exercise or defend our legal rights, or disclose your information as evidence in litigation in which we are involved.
- Vital Interests. We may process your information where we believe it is necessary to protect your vital interests or the vital interests of a third party, such as situations involving potential threats to the safety of any person.
- If collection is clearly in the interests of an individual and consent cannot be obtained in a timely way
- For investigations and fraud detection and prevention
- For business transactions provided certain conditions are met
- If it is contained in a witness statement and the collection is necessary to assess, process, or settle an insurance claim
- For identifying injured, ill, or deceased persons and communicating with next of kin
- If we have reasonable grounds to believe an individual has been, is, or may be victim of financial abuse
- If it is reasonable to expect collection and use with consent would compromise the availability or the accuracy of the information and the collection is reasonable for purposes related to investigating a breach of an agreement or a contravention of the laws of Canada or a province
- If disclosure is required to comply with a subpoena, warrant, court order, or rules of the court relating to the production of records
- If it was produced by an individual in the course of their employment, business, or profession and the collection is consistent with the purposes for which the information was produced
- If the collection is solely for journalistic, artistic, or literary purposes
- If the information is publicly available and is specified by the regulations
- We may disclose de-identified information for approved research or statistics projects, subject to ethics oversight and confidentiality commitments
- Web and Mobile Analytics
- Business Transfers. We may share or transfer your information in connection with, or during negotiations of, any merger, sale of company assets, financing, or acquisition of all or a portion of our business to another company.
Google Analytics
We may share your information with Google Analytics to track and6. DO WE OFFER ARTIFICIAL INTELLIGENCE-BASED PRODUCTS?
In Short: We offer products, features, or tools powered by artificial intelligence, machine learning, or similar technologies.Image analysis
Natural language processing
8. HOW LONG DO WE KEEP YOUR INFORMATION?
In Short: We keep your information for as long as necessary to9. DO WE COLLECT INFORMATION FROM MINORS?
In Short: We do not knowingly collect data from or market to10. WHAT ARE YOUR PRIVACY RIGHTS?
In Short:Account Information
If you would at any time like to review or change the information in your account or terminate your account, you can:Contact us using the contact information provided.
11. CONTROLS FOR DO-NOT-TRACK FEATURES
Most web browsers and some mobile operating systems and mobile applications include a Do-Not-Track (12. DO UNITED STATES RESIDENTS HAVE SPECIFIC PRIVACY RIGHTS?
In Short: If you are a resident ofCategories of Personal Information We Collect
The table below shows the categories of personal information we have collected in the past twelve (12) months. The table includes illustrative examples of each category and does not reflect the personal information we collect from you. For a comprehensive inventory of all personal information we process, please refer to the section| Category | Examples | Collected |
|---|---|---|
A. Identifiers | Contact details, such as real name, alias, postal address, telephone or mobile contact number, unique personal identifier, online identifier, Internet Protocol address, email address, and account name |
B. Personal information as defined in the California Customer Records statute | Name, contact information, education, employment, employment history, and financial information |
Gender, age, date of birth, race and ethnicity, national origin, marital status, and other demographic data | ||
Transaction information, purchase history, financial details, and payment information | ||
Fingerprints and voiceprints | ||
Browsing history, search history, online | ||
Device location | ||
Images and audio, video or call recordings created in connection with our business activities | ||
Business contact details in order to provide you our Services at a business level or job title, work history, and professional qualifications if you apply for a job with us | ||
Student records and directory information | ||
Inferences drawn from any of the collected personal information listed above to create a profile or summary about, for example, an individual’s preferences and characteristics | ||
- Receiving help through our customer support channels;
- Participation in customer surveys or contests; and
- Facilitation in the delivery of our Services and to respond to your inquiries.
- Category A -
As long as the user has an account with us
- Category B -
As long as the user has an account with us
- Category
G - As long as the user has an account with us
- Category
J - Temporarily. Deleted within 1-2 days
Sources of Personal Information
Learn more about the sources of personal information we collect inHow We Use and Share Personal Information
- Category A. Identifiers
- Category
G . Geolocation data
- Category
J . Education information
Your Rights
You have rights under certain US state data protection laws. However, these rights are not absolute, and in certain cases, we may decline your request as permitted by law. These rights include:- Right to know whether or not we are processing your personal data
- Right to access your personal data
- Right to correct inaccuracies in your personal data
- Right to request the deletion of your personal data
- Right to obtain a copy of the personal data you previously shared with us
- Right to non-discrimination for exercising your rights
- Right to opt out of the processing of your personal data if it is used for targeted advertising
(or sharing as defined under California’s privacy law) , the sale of personal data, or profiling in furtherance of decisions that produce legal or similarly significant effects ( 'profiling' )
- Right to access the categories of personal data being processed (as permitted by applicable law, including the privacy law in Minnesota)
- Right to obtain a list of the categories of third parties to which we have disclosed personal data (as permitted by applicable law, including the privacy law in
California, Delaware, and Maryland )
- Right to obtain a list of specific third parties to which we have disclosed personal data (as permitted by applicable law, including the privacy law in
Minnesota and Oregon )
- Right to obtain a list of third parties to which we have sold personal data (as permitted by applicable law, including the privacy law in Connecticut)
- Right to review, understand, question, and depending on where you live, correct how personal data has been profiled (as permitted by applicable law, including the privacy law in
Connecticut and Minnesota )
- Right to limit use and disclosure of sensitive personal data (as permitted by applicable law, including the privacy law in California)
- Right to opt out of the collection of sensitive data and personal data collected through the operation of a voice or facial recognition feature (as permitted by applicable law, including the privacy law in Florida)
How to Exercise Your Rights
To exercise these rights, you can contact usRequest Verification
Upon receiving your request, we will need to verify your identity to determine you are the same person about whom we have the information in our system. We will only use personal information provided in your request to verify your identity or authority to make the request. However, if we cannot verify your identity from the information already maintained by us, we may request that you provide additional information for the purposes of verifying your identity and for security or fraud-prevention purposes.Appeals
Under certain US state data protection laws, if we decline to take action regarding your request, you may appeal our decision by emailing us atCalifornia
California Civil Code Section 1798.83, also known as the 13. DO WE MAKE UPDATES TO THIS NOTICE?
In Short: Yes, we will update this notice as necessary to stay compliant with relevant laws.14. HOW CAN YOU CONTACT US ABOUT THIS NOTICE?
If you have questions or comments about this notice, you may15. HOW CAN YOU REVIEW, UPDATE, OR DELETE THE DATA WE COLLECT FROM YOU?
Worksheet Processing Privacy Addendum
Uploaded worksheet content may contain personal data, such as student names or other details printed or handwritten on a worksheet. We collect and process any personal data found in uploaded documents solely for document processing and cleaning, including OCR, text extraction, diagram extraction, and generating editable worksheet content. We do not use personal data found in uploaded worksheet content for marketing, advertising, behavioural profiling, or unrelated analytics.
Uploaded worksheet content may be transferred to overseas subprocessors for OCR, vision, text extraction, and document-cleaning functions. These subprocessors may include OpenAI, Anthropic, Google Gemini, and Mathpix, as well as hosting, authentication, database, and infrastructure providers such as Vercel, Supabase, and Microsoft where needed to provide the Services. Where personal data is transferred outside Singapore, these subprocessors are bound by enterprise or commercial agreements, data processing terms, security commitments, and provider controls intended to provide a standard of protection comparable to the Singapore PDPA.
Original uploaded PDF files and full page images are processed transiently. They are retained temporarily so that you can review the output and manually recrop diagrams if needed, and are deleted from source-file processing storage within twenty-four (24) hours after the processing job completes by an automatic purge process. Worksheet Cleaner retains the extracted question text, generated editable content, diagram crops needed for review/export, account records, job metadata, and audit or support records only for as long as reasonably necessary to provide the Services, handle deletion requests, comply with law, and protect the service.
The following Singapore section is provided specifically for compliance with Singapore's Personal Data Protection Act 2012 (PDPA). It should be read as a Singapore-specific notice, distinct from the general privacy policy above.
DATA PROTECTION NOTICE FOR CUSTOMERS
This Data Protection Notice (“Notice”) sets out the basis which Worksheet Cleaner (“we”, “us”, or “our”) may collect, use, disclose or otherwise process personal data of our customers in accordance with the Personal Data Protection Act (“PDPA”). This Notice applies to personal data in our possession or under our control, including personal data in the possession of organisations which we have engaged to collect, use, disclose or process personal data for our purposes.
PERSONAL DATA
1. As used in this Notice:
“customer” means an individual who (a) has contacted us through any means to find out more about any goods or services we provide, or (b) may, or has, entered into a contract with us for the supply of any goods or services by us; and
“personal data” means data, whether true or not, about a customer who can be identified: (a) from that data; or (b) from that data and other information to which we have or are likely to have access.
2. Depending on the nature of your interaction with us, some examples of personal data which we may collect from you include name, email address, contact / authentication data, uploaded worksheet/pdf files, generated worksheet/question content, payment/subscription status and stripe customer id.
3. Other terms used in this Notice shall have the meanings given to them in the PDPA (where the context so permits).
COLLECTION, USE AND DISCLOSURE OF PERSONAL DATA
4. We generally do not collect your personal data unless (a) it is provided to us voluntarily by you directly or via a third party who has been duly authorised by you to disclose your personal data to us (your “authorised representative”) after (i) you (or your authorised representative) have been notified of the purposes for which the data is collected, and (ii) you (or your authorised representative) have provided written consent to the collection and usage of your personal data for those purposes, or (b) collection and use of personal data without consent is permitted or required by the PDPA or other laws. We shall seek your consent before collecting any additional personal data and before using your personal data for a purpose which has not been notified to you (except where permitted or authorised by law).
5. We may collect and use your personal data for any or all of the following purposes:
(a) performing obligations in the course of or in connection with our provision of the goods and/or services requested by you; (b) verifying your identity; (c) responding to, handling, and processing queries, requests, applications, complaints, and feedback from you; (d) managing your relationship with us; (e) processing payment or credit transactions; (f) complying with any applicable laws, regulations, codes of practice, guidelines, or rules, or to assist in law enforcement and investigations conducted by any governmental and/or regulatory authority; (g) any other purposes for which you have provided the information; (h) transmitting to any unaffiliated third parties including our third party service providers and agents, and relevant governmental and/or regulatory authorities, whether in Singapore or abroad, for the aforementioned purposes; and (i) any other incidental business purposes related to or in connection with the above.
6. We may disclose your personal data:
(a) where such disclosure is required for performing obligations in the course of or in connection with our provision of the goods and services requested by you; or (b) to third party service providers, agents and other organisations we have engaged to perform any of the functions with reference to the above mentioned purposes.
WORKSHEET PROCESSING PURPOSES
6A. Uploaded worksheet content may contain personal data, such as student names or other details printed or handwritten on a worksheet. We collect and process any personal data found in uploaded documents solely for document processing and cleaning, including OCR, text extraction, diagram extraction, and generating editable worksheet content. We do not use personal data found in uploaded worksheet content for marketing, advertising, behavioural profiling, or unrelated analytics.
WITHDRAWING YOUR CONSENT
7. The consent that you provide for the collection, use and disclosure of your personal data will remain valid until such time it is being withdrawn by you in writing. You may withdraw consent and request us to stop collecting, using and/or disclosing your personal data for any or all of the purposes listed above by submitting your request in writing or via email to our Data Protection Officer at the contact details provided below.
8. Upon receipt of your written request to withdraw your consent, we may require reasonable time (depending on the complexity of the request and its impact on our relationship with you) for your request to be processed and for us to notify you of the consequences of us acceding to the same, including any legal consequences which may affect your rights and liabilities to us. In general, we shall seek to process your request within ten (10) business days of receiving it.
9. Whilst we respect your decision to withdraw your consent, please note that depending on the nature and scope of your request, we may not be in a position to continue providing our goods or services to you and we shall, in such circumstances, notify you before completing the processing of your request. Should you decide to cancel your withdrawal of consent, please inform us in writing in the manner described in clause 7 above.
10. Please note that withdrawing consent does not affect our right to continue to collect, use and disclose personal data where such collection, use and disclose without consent is permitted or required under applicable laws.
ACCESS TO AND CORRECTION OF PERSONAL DATA
11. If you wish to make (a) an access request for access to a copy of the personal data which we hold about you or information about the ways in which we use or disclose your personal data, or (b) a correction request to correct or update any of your personal data which we hold about you, you may submit your request in writing or via email to our Data Protection Officer at the contact details provided below.
12. Please note that a reasonable fee may be charged for an access request. If so, we will inform you of the fee before processing your request.
13. We will respond to your request as soon as reasonably possible. In general, our response will be within twenty-eight (28) business days. Should we not be able to respond to your request within thirty (30) days after receiving your request, we will inform you in writing within thirty (30) days of the time by which we will be able to respond to your request. If we are unable to provide you with any personal data or to make a correction requested by you, we shall generally inform you of the reasons why we are unable to do so (except where we are not required to do so under the PDPA).
PROTECTION OF PERSONAL DATA
14. To safeguard your personal data from unauthorised access, collection, use, disclosure, copying, modification, disposal or similar risks, we have introduced appropriate administrative, physical and technical measures such as minimised collection of personal data, authentication and access controls (such as good password practices, need-to-basis for data disclosure, etc.), regular patching of operating system and other software, securely erase storage media in devices before disposal, and web security measures against risks.
15. You should be aware, however, that no method of transmission over the Internet or method of electronic storage is completely secure. While security cannot be guaranteed, we strive to protect the security of your information and are constantly reviewing and enhancing our information security measures.
ACCURACY OF PERSONAL DATA
16. We generally rely on personal data provided by you (or your authorised representative). In order to ensure that your personal data is current, complete and accurate, please update us if there are changes to your personal data by informing our Data Protection Officer in writing or via email at the contact details provided below.
RETENTION OF PERSONAL DATA
17. We may retain your personal data for as long as it is necessary to fulfil the purpose for which it was collected, or as required or permitted by applicable laws.
18. We will cease to retain your personal data, or remove the means by which the data can be associated with you, as soon as it is reasonable to assume that such retention no longer serves the purpose for which the personal data was collected, and is no longer necessary for legal or business purposes.
18A. Original uploaded PDF files and full page images are processed transiently. They are retained temporarily so that you can review the output and manually recrop diagrams if needed, and are deleted from source-file processing storage within twenty-four (24) hours after the processing job completes by an automatic purge process. Worksheet Cleaner retains the extracted question text, generated editable content, diagram crops needed for review/export, account records, job metadata, and audit or support records only for as long as reasonably necessary to provide the services, handle deletion requests, comply with law, and protect the service.
TRANSFERS OF PERSONAL DATA OUTSIDE OF SINGAPORE
19. We generally do not transfer your personal data to countries outside of Singapore. However, if we do so, we will obtain your consent for the transfer to be made and we will take steps to ensure that your personal data continues to receive a standard of protection that is at least comparable to that provided under the PDPA.
19A. Uploaded worksheet content may be transferred to overseas subprocessors for OCR, vision, text extraction, and document-cleaning functions. These subprocessors may include OpenAI, Anthropic, Google Gemini, and Mathpix, as well as hosting, authentication, database, and infrastructure providers such as Vercel, Supabase, and Microsoft where needed to provide the services. Where personal data is transferred outside Singapore, these subprocessors are bound by enterprise or commercial agreements, data processing terms, security commitments, and provider controls intended to provide a standard of protection comparable to the Singapore PDPA.
DATA PROTECTION OFFICER
20. You may contact our Data Protection Officer if you have any enquiries or feedback on our personal data protection policies and procedures, or if you wish to make any request, in the following manner:
Name of DPO : Thomas Oh Contact No. : +447732503390 Email Address : ohcsthomas@gmail.com
EFFECT OF NOTICE AND CHANGES TO NOTICE
21. This Notice applies in conjunction with any other notices, contractual clauses and consent clauses that apply in relation to the collection, use and disclosure of your personal data by us.
22. We may revise this Notice from time to time without any prior notice. You may determine if any such revision has taken place by referring to the date on which this Notice was last updated. Your continued use of our services constitutes your acknowledgement and acceptance of such changes.
Effective date : 07/07/2026 Last updated : 07/07/2026
7. HOW DO WE HANDLE YOUR SOCIAL LOGINS?
In Short: If you choose to register or log in to our Services using a social media account, we may have access to certain information about you.