Cookie Policy

Last updated: January 2026

About this policy

T5 Interactive Limited (trading as "HeyKitsu", "we", "us" or "our") uses cookies and similar technologies on our website (www.heykitsu.com) and mobile application (together, the "Platform").

This Cookie Policy explains what cookies are, how we use them, and how you can manage your preferences. It should be read alongside our Privacy Policy and Terms of Service.

Company details

  • Company name: T5 Interactive Limited
  • Registration number: 16620203 (England and Wales)
  • Registered address: T5 Interactive Limited, Angel Court, 81 St Clement's Street, Oxford OX4 1AW
  • Contact: support@t5i.io

What are cookies?

Cookies are small text files that are stored on your device (computer, tablet or mobile phone) when you visit a website. They are widely used to make websites work more efficiently, remember your preferences and provide analytics information to website owners.

Cookies are not harmful and do not contain viruses or personal information such as your name or payment details.

Types of cookies

Cookies can be categorised in several ways:

By duration

  • Session cookies are temporary and are deleted when you close your browser
  • Persistent cookies remain on your device for a set period or until you delete them

By origin

  • First-party cookies are set by the website you are visiting
  • Third-party cookies are set by other organisations (such as payment providers)

By purpose

  • Strictly necessary cookies are essential for the website to function
  • Functional cookies remember your preferences and settings

How we use cookies

We use cookies and similar technologies for the following purposes:

Strictly necessary cookies

These cookies are essential for the Platform to function properly. Without them, you would not be able to navigate the website or use key features such as logging into your account.

| Cookie | Provider | Purpose | Duration | |--------|----------|---------|----------| | sb--auth-token | Supabase | Authentication token to keep you logged in | Session | | sb--auth-token-code-verifier | Supabase | Security verification for authentication | Session |

You cannot opt out of strictly necessary cookies as they are required for the Platform to work.

Payment processing

We use RevenueCat to manage subscriptions and payments. RevenueCat may set cookies or use similar technologies to:

  • Process subscription purchases securely
  • Prevent fraud during payment processing
  • Maintain your subscription status

For more information about how RevenueCat handles data, visit the RevenueCat Privacy Policy.

Cookies we do not use

We want to be clear about what we do not do:

  • We do not use analytics or tracking cookies. We do not use Google Analytics, PostHog, or similar services on the marketing website.
  • We do not use marketing or advertising cookies. We do not track you across other websites or show you targeted advertisements based on your browsing history.
  • We do not sell cookie data. We never sell information collected through cookies to third parties.
  • We do not use cookies for profiling children. In line with our commitment to children's privacy and the UK Age Appropriate Design Code, we do not use cookies or similar technologies to profile, target or track children using our Platform.

Third-party services

Some functionality on our Platform is provided by third-party services. The third parties that may set cookies or process data on our Platform are:

| Third party | Purpose | Privacy policy | |-------------|---------|----------------| | Supabase | Authentication and hosting | Supabase Privacy Policy | | RevenueCat | Subscription and payment management | RevenueCat Privacy Policy | | Vercel | Website hosting | Vercel Privacy Policy |

Similar technologies

In addition to cookies, we use similar technologies:

Local storage

Local storage allows websites to store data locally on your device. Unlike cookies, local storage data is not sent to the server with every request. We use local storage to:

  • Remember your selected learning collection (English, Maths, Verbal Reasoning, Non-Verbal Reasoning)
  • Store UI preferences for a better experience
  • Cache temporary data for faster loading

| Key | Purpose | Duration | |-----|---------|----------| | heykitsu-selected-collection | Remembers your selected learning subject | Persistent | | lastStreakShownDate | Tracks when streak animations were last shown | Persistent |

Session storage

Session storage is similar to local storage but is cleared when you close your browser tab. We use session storage for temporary data during your browsing session.

Managing cookies

Browser settings

Most web browsers allow you to control cookies through their settings. You can usually find these in the "Options" or "Preferences" menu of your browser. Common options include:

  • Blocking all cookies
  • Blocking only third-party cookies
  • Deleting cookies when you close your browser
  • Receiving a notification before a cookie is stored

For more information about managing cookies in your browser:

Mobile devices

On iOS and Android devices, you can manage cookies and tracking preferences in your device settings:

  • iOS: Settings > Safari > Privacy & Security
  • Android: Settings > Privacy > Cookies (location may vary by device)

Consequences of disabling cookies

If you disable or delete cookies:

  • You may need to log in again each time you visit
  • Some features may not work correctly
  • Your preferences may not be remembered

Strictly necessary cookies cannot be disabled as they are required for the Platform to function.

Do Not Track signals

Some browsers include a "Do Not Track" (DNT) feature that sends a signal to websites indicating that you do not wish to be tracked. There is currently no industry standard for how websites should respond to DNT signals.

Our website does not currently respond to DNT signals. However, as noted above, we do not use tracking or analytics cookies.

Cookies and children

Our Platform is designed for children aged 7–11. We take children's privacy seriously and comply with the UK Age Appropriate Design Code.

For children using our Platform:

  • We only use strictly necessary cookies required for the service to function
  • We do not use analytics or tracking cookies to profile children
  • We do not serve personalised advertising to children
  • We do not share children's data with third parties for marketing purposes

Parents and guardians can manage their child's privacy settings through the parent dashboard.

Changes to this policy

We may update this Cookie Policy from time to time to reflect changes in technology, legislation or our practices.

When we make material changes, we will:

  • Update the "Last updated" date at the top of this policy
  • Display a prominent notice on our website

We encourage you to review this policy periodically.

Contact us

If you have any questions about this Cookie Policy or how we use cookies, please contact us:

  • Email: support@t5i.io
  • Post: T5 Interactive Limited, Angel Court, 81 St Clement's Street, Oxford OX4 1AW

You also have the right to lodge a complaint with the UK Information Commissioner's Office (ICO) if you believe we have not complied with data protection laws:

  • Information Commissioner's Office
  • Wycliffe House, Water Lane, Wilmslow, Cheshire SK9 5AF
  • Telephone: 0303 123 1113
  • Website: www.ico.org.uk

Further information

For more information about cookies and how to manage them, visit: