Legal

Privacy Policy

This Privacy Notice for CellSkill ("we," "us," or "our") describes how and why we might access, collect, store, use, and share ("process") your personal information when you use our services.

Last updated: June 25, 2026

This Privacy Notice applies when you:

  • Visit our website at cellskill.io or any website of ours that links to this Privacy Notice
  • Use CellSkill, an online learning platform that teaches Microsoft Excel skills through real-world, industry-specific practice
  • Engage with us in other related ways, including any marketing, events, or product updates

Questions or concerns? Reading this Privacy Notice will help you understand your privacy rights and choices. We are responsible for making decisions about how your personal information is processed. If you do not agree with our policies and practices, please do not use our Services. If you still have any questions or concerns, please contact us at privacy@cellskill.io.

Summary of Key Points

This summary provides key points from our Privacy Notice. Use the table of contents below to find a specific section.

What personal information do we process? When you visit, use, or navigate our Services, we may process personal information depending on how you interact with us, the choices you make, and the products and features you use.

Do we process any sensitive personal information? We do not process sensitive personal information.

Do we collect any information from third parties? When you choose to sign in with Google, GitHub, or Facebook, we receive limited profile information from those providers (see Section 6).

How do we process your information? We process your information to provide, improve, and administer our Services, communicate with you, for security and fraud prevention, and to comply with law. We process your information only when we have a valid legal reason to do so.

In what situations and with which parties do we share personal information? We may share information in specific situations and with specific service providers (see Section 4).

How do we keep your information safe? We have adequate organizational and technical processes and procedures in place to protect your personal information. However, no electronic transmission can be guaranteed 100% secure.

What are your rights? Depending on where you are located geographically, the applicable privacy law may mean you have certain rights regarding your personal information.

How do you exercise your rights? The easiest way to exercise your rights is by visiting cellskill.io/contact, or by contacting us. We will consider and act upon any request in accordance with applicable data protection laws.

Table of Contents

  1. What information do we collect?
  2. How do we process your information?
  3. What legal bases do we rely on?
  4. When and with whom do we share your personal information?
  5. Do we use cookies and other tracking technologies?
  6. How do we handle your social logins?
  7. Is your information transferred internationally?
  8. How long do we keep your information?
  9. How do we keep your information safe?
  10. Do we collect information from minors?
  11. What are your privacy rights?
  12. Controls for Do-Not-Track features
  13. Do United States residents have specific privacy rights?
  14. Do we make updates to this notice?
  15. How can you contact us about this notice?
  16. How can you review, update, or delete the data we collect from you?

1. What information do we collect?

Personal information you disclose to us

In Short: We collect personal information that you provide to us.

We collect personal information that you voluntarily provide to us when you register on the Services, express an interest in obtaining information about us or our products and Services, when you participate in activities on the Services, or otherwise when you contact us.

Personal Information Provided by You. The personal information we collect depends on the context of your interactions with us and the Services. It may include:

  • Names
  • Email addresses
  • Passwords (stored hashed by Supabase)
  • Industry niche and learning preferences
  • Profile information (display name, optional avatar)
  • Exercise submissions, formulas, and answers
  • AI tutor messages and conversation history
  • Contact preferences

Sensitive Information. We do not process sensitive information.

Social Media Login Data. We may provide you with the option to register with us using your existing Google, GitHub, or Facebook account. If you choose to register in this way, we will collect certain profile information about you from the provider, as described in the section called How do we handle your social logins? below.

All personal information that you provide to us must be true, complete, and accurate, and you must notify us of any changes to such personal information.

Information automatically collected

In Short: Some information, such as your Internet Protocol (IP) address and browser and device characteristics, is collected automatically when you visit our Services.

We automatically collect certain information when you visit, use, or navigate the Services. This information does not reveal your specific identity but may include device and usage information, such as your IP address, browser and device characteristics, operating system, language preferences, referring URLs, device name, country, location, and information about how and when you use our Services. This information is primarily needed to maintain the security and operation of our Services and for our internal analytics and reporting purposes.

Like many businesses, we also collect information through cookies and similar technologies. You can find out more in our Cookie Policy.

The information we collect includes:

  • Log and Usage Data. Service-related, diagnostic, usage, and performance information our servers automatically collect when you access or use our Services. This may include your IP address, device information, browser type, and settings.
  • Device Data. Information about your computer, phone, tablet, or other device you use to access the Services.

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. We process the personal information for the purposes listed below. We may also process your information for other purposes only with your prior explicit consent.

We process your personal information for a variety of reasons, depending on how you interact with our Services, including:

  • 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 deliver and facilitate delivery of services to the user. We may process your information to provide you with the requested service, including running exercises, the AI tutor, and tracking your progress.
  • To respond to user inquiries and offer support. We may process your information to respond to your inquiries and solve any potential issues you might have with the requested service.
  • To send administrative information to you. We may process your information to send you details about our products and services, changes to our terms and policies, and other similar information.
  • 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.
  • 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., legal basis) to do so under applicable law, like with your consent, to comply with laws, to provide you with services to enter into or fulfill our contractual obligations, to protect your rights, or to fulfill our legitimate business interests.

If you are located in the EU or UK, this section applies to you.

The General Data Protection Regulation (GDPR) and UK GDPR require us to explain the valid legal bases we rely on in order to process your personal information. As such, we may rely on the following legal bases:

  • Consent. We may process your information if you have given us permission to use your personal information for a specific purpose. You can withdraw your consent at any time.
  • Performance of a Contract. We may process your personal information when we believe it is necessary to fulfill our contractual obligations to you, including providing our Services.
  • 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, to:
    • Analyze how our Services are used so we can improve them to engage and retain users
    • Diagnose problems and prevent fraudulent activities
    • Understand how our users use our products and services so we can improve user experience
    • Send users information about features and updates
  • 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.

In Morocco, processing of personal data is also governed by Law 09-08 on the Protection of Individuals with regard to the Processing of Personal Data.

4. When and with whom do we share your personal information?

In Short: We may share information in specific situations described in this section and with the following service providers.

Vendors, Consultants, and Other Third-Party Service Providers. We may share your data with third-party vendors, service providers, contractors, or agents who perform services for us or on our behalf and require access to such information to do that work. We have contracts in place with our third parties, which are designed to help safeguard your personal information. This means that they cannot do anything with your personal information unless we have instructed them to do it. They will also not share your personal information with any organization apart from us. They also commit to protect the data they hold on our behalf and to retain it for the period we instruct.

The third parties we may share personal information with are as follows:

  • AI Service Providers
    Anthropic (Claude API) — for processing AI tutor messages. Anthropic does not use API inputs or outputs to train its models.
  • Account Registration and Authentication
    Google Sign-In, GitHub OAuth, Facebook Login — used when you choose to sign in with those providers.
  • Data Storage and Authentication
    Supabase — for database, authentication, and storage of user accounts and learning progress.
  • Web Hosting and Infrastructure
    Vercel — for hosting and content delivery.
  • Product Analytics
    PostHog (EU cloud) — for anonymous usage analytics and product insights.

We also may need to share your personal information in the following situations:

  • 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.

5. Do we use cookies and other tracking technologies?

In Short: We may use cookies and other tracking technologies to collect and store your information.

We may use cookies and similar tracking technologies (like web beacons and pixels) to gather information when you interact with our Services. Some online tracking technologies help us maintain the security of our Services and your account, prevent crashes, fix bugs, save your preferences, and assist with basic site functions.

We also permit third parties and service providers to use online tracking technologies on our Services for analytics. The third parties and service providers use their technology to help us understand product usage and improve the Services.

Specific information about how we use such technologies and how you can refuse certain cookies is set out in our Cookie Policy.

6. 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.

Our Services offer you the ability to register and log in using your Google, GitHub, or Facebook account details. Where you choose to do this, we will receive certain profile information about you from your provider. The profile information we receive may vary depending on the provider concerned, but will often include your name, email address, profile picture, and other information you choose to make public on such a platform.

We will use the information we receive only for the purposes that are described in this Privacy Notice or that are otherwise made clear to you on the relevant Services. Please note that we do not control, and are not responsible for, other uses of your personal information by your third-party provider. We recommend that you review their privacy notice to understand how they collect, use, and share your personal information, and how you can set your privacy preferences on their sites and apps.

7. Is your information transferred internationally?

In Short: We may transfer, store, and process your information in countries other than your own.

Our servers are located in the United States and the European Union. If you are accessing our Services from outside, please be aware that your information may be transferred to, stored by, and processed by us in our facilities and in the facilities of the third parties with whom we may share your personal information (see Section 4 above), including facilities in the United States, European Union, Morocco, and other countries.

If you are a resident in the European Economic Area (EEA), United Kingdom (UK), or Switzerland, then these countries may not necessarily have data protection laws or other similar laws as comprehensive as those in your country. However, we will take all necessary measures to protect your personal information in accordance with this Privacy Notice and applicable law.

European Commission's Standard Contractual Clauses:

We have implemented measures to protect your personal information, including by relying on the European Commission's Standard Contractual Clauses (SCCs) for transfers of personal information between us and our third-party providers. These clauses require all recipients to protect all personal information that they process originating from the EEA or UK in accordance with European data protection laws and regulations. Our Standard Contractual Clauses can be provided upon request.

8. How long do we keep your information?

In Short: We keep your information for as long as necessary to fulfill the purposes outlined in this Privacy Notice unless otherwise required by law.

We will only keep your personal information for as long as it is necessary for the purposes set out in this Privacy Notice, unless a longer retention period is required or permitted by law (such as tax, accounting, or other legal requirements). No purpose in this notice will require us keeping your personal information for longer than the period of time in which users have an account with us.

When we have no ongoing legitimate business need to process your personal information, we will either delete or anonymize such information, or, if this is not possible (for example, because your personal information has been stored in backup archives), then we will securely store your personal information and isolate it from any further processing until deletion is possible.

9. How do we keep your information safe?

In Short: We aim to protect your personal information through a system of organizational and technical security measures.

We have implemented appropriate and reasonable technical and organizational security measures designed to protect the security of any personal information we process. These include TLS encryption in transit, hashed passwords (via Supabase Auth), encryption at rest where supported by our providers, row-level security policies in our database, and role-based access controls.

However, despite our safeguards and efforts to secure your information, no electronic transmission over the Internet or information storage technology can be guaranteed to be 100% secure, so we cannot promise or guarantee that hackers, cybercriminals, or other unauthorized third parties will not be able to defeat our security and improperly collect, access, steal, or modify your information. Although we will do our best to protect your personal information, transmission of personal information to and from our Services is at your own risk. You should only access the Services within a secure environment.

10. Do we collect information from minors?

In Short: We do not knowingly collect data from or market to children under 16 years of age or the equivalent age as specified by law in your jurisdiction.

We do not knowingly collect, solicit data from, or market to children under 16 years of age or the equivalent age as specified by law in your jurisdiction, nor do we knowingly sell such personal information. By using the Services, you represent that you are at least 16 or the equivalent age as specified by law in your jurisdiction or that you are the parent or guardian of such a minor and consent to such minor dependent's use of the Services. If we learn that personal information from users less than 16 years of age has been collected, we will deactivate the account and take reasonable measures to promptly delete such data from our records. If you become aware of any data we may have collected from children under age 16, please contact us at privacy@cellskill.io.

11. What are your privacy rights?

In Short: Depending on your state of residence in the US or in some regions, such as the European Economic Area (EEA), United Kingdom (UK), Switzerland, and Canada, you have rights that allow you greater access to and control over your personal information. You may review, change, or terminate your account at any time, depending on your country, province, or state of residence.

In some regions (like the EEA, UK, Switzerland, and Canada), you have certain rights under applicable data protection laws. These may include the right (i) to request access and obtain a copy of your personal information, (ii) to request rectification or erasure, (iii) to restrict the processing of your personal information, (iv) if applicable, to data portability, and (v) not to be subject to automated decision-making. In certain circumstances, you may also have the right to object to the processing of your personal information. You can make such a request by contacting us using the contact details provided in the section How can you contact us about this notice? below.

We will consider and act upon any request in accordance with applicable data protection laws.

If you are located in the EEA or UK and you believe we are unlawfully processing your personal information, you also have the right to complain to your Member State data protection authority or the UK data protection authority. If you are located in Morocco, you can lodge a complaint with the Commission Nationale de contrôle de la protection des Données à caractère Personnel (CNDP).

Withdrawing your consent

If we are relying on your consent to process your personal information, you have the right to withdraw your consent at any time. You can withdraw your consent by contacting us using the contact details provided below. However, please note that this will not affect the lawfulness of the processing before its withdrawal, nor will it affect the processing of your personal information conducted in reliance on lawful processing grounds other than consent.

Opting out of marketing and promotional communications

You can unsubscribe from our marketing and promotional communications at any time by clicking on the unsubscribe link in the emails that we send, or by contacting us using the details provided below. You will then be removed from the marketing lists. However, we may still communicate with you, for example, to send you service-related messages that are necessary for the administration and use of your account, to respond to service requests, or for other non-marketing purposes.

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.

Upon your request to terminate your account, we will deactivate or delete your account and information from our active databases. However, we may retain some information in our files to prevent fraud, troubleshoot problems, assist with any investigations, enforce our legal terms, and comply with applicable legal requirements.

Cookies and similar technologies

Most web browsers are set to accept cookies by default. If you prefer, you can usually choose to set your browser to remove cookies and to reject cookies. If you choose to remove cookies or reject cookies, this could affect certain features or services of our Services. For further information, please see our Cookie Policy.

If you have questions or comments about your privacy rights, you may email us at privacy@cellskill.io.

12. Controls for Do-Not-Track features

Most web browsers and some mobile operating systems and mobile applications include a Do-Not-Track ("DNT") feature or setting you can activate to signal your privacy preference not to have data about your online browsing activities monitored and collected. At this stage, no uniform technology standard for recognizing and implementing DNT signals has been finalized. As such, we do not currently respond to DNT browser signals or any other mechanism that automatically communicates your choice not to be tracked online. If a standard for online tracking is adopted that we must follow in the future, we will inform you about that practice in a revised version of this Privacy Notice.

California law requires us to let you know how we respond to web browser DNT signals. Because there currently is not an industry or legal standard for recognizing or honoring DNT signals, we do not respond to them at this time.

13. Do United States residents have specific privacy rights?

In Short: If you are a resident of California, Colorado, Connecticut, Delaware, Florida, Indiana, Iowa, Kentucky, Maryland, Minnesota, Montana, Nebraska, New Hampshire, New Jersey, Oregon, Rhode Island, Tennessee, Texas, Utah, or Virginia, you may have the right to request access to and receive details about the personal information we maintain about you and how we have processed it, correct inaccuracies, get a copy of, or delete your personal information. You may also have the right to withdraw your consent to our processing of your personal information. These rights may be limited in some circumstances by applicable law.

Categories of Personal Information We Collect

We have collected the following categories of personal information in the past twelve (12) months:

  • Identifiers — names, email addresses, IP addresses, account names. Collected: Yes.
  • Internet or other similar network activity — browsing history within our Services, interaction patterns, exercise submissions. Collected: Yes.
  • Inferences drawn from collected personal information — learning progress and skill mastery records used to show your own progress (not for commercial profiling). Collected: Yes (for your own progress display).
  • Commercial information — not collected during the beta (no payments processed).
  • Biometric information — not collected.
  • Geolocation data — approximate location derived from IP address only.
  • Sensitive personal information — not collected.

Sources of Personal Information

We collect personal information from you directly when you register for an account, use our Services, or contact us, and automatically when you interact with our Services (see Section 1).

How We Use and Share Personal Information

Learn more about how we use your personal information in Section 2 and how we share it in Section 4.

Will your information be shared with anyone else?

We may disclose your personal information with our service providers pursuant to a written contract between us and each service provider. We have not sold or shared any personal information to third parties for a business or commercial purpose in the preceding twelve (12) months.

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, the sale of personal data, or profiling in furtherance of decisions that produce legal or similarly significant effects

How to Exercise Your Rights

To exercise these rights, you can contact us by visiting cellskill.io/contact, by emailing us at privacy@cellskill.io, or by referring to the contact details at the bottom of this document.

Request 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.

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 at privacy@cellskill.io. We will inform you in writing of any action taken or not taken in response to the appeal, including a written explanation of the reasons for the decisions. If your appeal is denied, you may submit a complaint to your state attorney general.

14. Do we make updates to this notice?

In Short: Yes, we will update this notice as necessary to stay compliant with relevant laws.

We may update this Privacy Notice from time to time. The updated version will be indicated by an updated "Last updated" date at the top of this Privacy Notice. If we make material changes to this Privacy Notice, we may notify you either by prominently posting a notice of such changes or by directly sending you a notification. We encourage you to review this Privacy Notice frequently to be informed of how we are protecting your information.

15. How can you contact us about this notice?

If you have questions or comments about this notice, you may email us at privacy@cellskill.io or visit our contact page.

CellSkill is an independent project operated from Morocco. Any additional details regarding the operator may be requested in writing at privacy@cellskill.io.

16. How can you review, update, or delete the data we collect from you?

Based on the applicable laws of your country or state of residence in the US, you may have the right to request access to the personal information we collect from you, details about how we have processed it, correct inaccuracies, or delete your personal information. You may also have the right to withdraw your consent to our processing of your personal information. These rights may be limited in some circumstances by applicable law. To request to review, update, or delete your personal information, please visit cellskill.io/contact.

Privacy Policy · CellSkill